ASoC: Fixes for v7.1

This round of fixes is mostly Sirini's Qualcomm cleanups that have been
 in review for a while, we also have a couple of small fixes from Cássio.
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Merge tag 'asoc-fix-v7.1-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v7.1

This round of fixes is mostly Sirini's Qualcomm cleanups that have been
in review for a while, we also have a couple of small fixes from Cássio.

.mailmap

@@ -584,6 +584,8 @@ Mayuresh Janorkar <mayur@ti.com>
 Md Sadre Alam <quic_mdalam@quicinc.com> <mdalam@codeaurora.org>
 Miaoqing Pan <quic_miaoqing@quicinc.com> <miaoqing@codeaurora.org>
 Michael Buesch <m@bues.ch>
+Michal Grzeschik <mgr@kernel.org> <m.grzeschik@pengutronix.de>
+Michal Grzeschik <mgr@kernel.org> <mgr@pengutronix.de>
 Michael Riesch <michael.riesch@collabora.com> <michael.riesch@wolfvision.net>
 Michal Simek <michal.simek@amd.com> <michal.simek@xilinx.com>
 Michel Dänzer <michel@tungstengraphics.com>

Documentation/.renames.txt

@@ -786,6 +786,7 @@ networking/altera_tse networking/device_drivers/ethernet/altera/altera_tse
 networking/bpf_flow_dissector bpf/prog_flow_dissector
 networking/cxacru networking/device_drivers/atm/cxacru
 networking/defza networking/device_drivers/fddi/defza
+networking/device_drivers/3com/3c509 networking/device_drivers/ethernet/3com/3c509
 networking/device_drivers/3com/vortex networking/device_drivers/ethernet/3com/vortex
 networking/device_drivers/amazon/ena networking/device_drivers/ethernet/amazon/ena
 networking/device_drivers/aquantia/atlantic networking/device_drivers/ethernet/aquantia/atlantic

Documentation/admin-guide/laptops/uniwill-laptop.rst

@@ -43,6 +43,11 @@ Support for changing the platform performance mode is currently not implemented.
 Battery Charging Control
 ------------------------
 
+.. warning:: Some devices do not properly implement the charging threshold interface. Forcing
+             the driver to enable access to said interface on such devices might damage the
+             battery [1]_. Because of this the driver will not enable said feature even when
+             using the ``force`` module parameter.
+
 The ``uniwill-laptop`` driver supports controlling the battery charge limit. This happens over
 the standard ``charge_control_end_threshold`` power supply sysfs attribute. All values
 between 1 and 100 percent are supported.
@@ -70,3 +75,8 @@ The ``uniwill-laptop`` driver allows to set the configurable TGP for devices wit
 allow it.
 
 See Documentation/ABI/testing/sysfs-driver-uniwill-laptop for details.
+
+References
+==========
+
+.. [1] https://www.reddit.com/r/XMG_gg/comments/ld9yyf/battery_limit_hidden_function_discovered_on/

Documentation/admin-guide/pm/amd-pstate.rst

@@ -358,9 +358,9 @@ Dynamic energy performance profile
 The amd-pstate driver supports dynamically selecting the energy performance
 profile based on whether the machine is running on AC or DC power.
 
-Whether this behavior is enabled by default depends on the kernel
+Whether this behavior is enabled by default depends on the kernel command line option
-config option `CONFIG_X86_AMD_PSTATE_DYNAMIC_EPP`. This behavior can also be overridden
+``amd_dynamic_epp`` is set. This behavior can also be overridden
-at runtime by the sysfs file ``/sys/devices/system/cpu/cpufreq/policyX/dynamic_epp``.
+at runtime by the sysfs file ``/sys/devices/system/cpu/amd_pstate/dynamic_epp``.
 
 When set to enabled, the driver will select a different energy performance
 profile when the machine is running on battery or AC power. The driver will
@@ -485,9 +485,8 @@ kernel parameter ``amd_prefcore=disable``.
 ``amd_dynamic_epp``
 
 When AMD pstate is in auto mode, dynamic EPP will control whether the kernel
-autonomously changes the EPP mode. The default is configured by
+autonomously changes the EPP mode. The default is disabled. It can be enabled
-``CONFIG_X86_AMD_PSTATE_DYNAMIC_EPP`` but can be explicitly enabled with
+with the kernel parameter ``amd_dynamic_epp=enable``.
-``amd_dynamic_epp=enable`` or disabled with ``amd_dynamic_epp=disable``.
 
 User Space Interface in ``sysfs`` - General
 ===========================================

Documentation/admin-guide/pm/intel_pstate.rst

@@ -355,11 +355,12 @@ HyperThreading (HT) in the context of Intel processors, is enabled on at least
 one core, ``intel_pstate`` assigns performance-based priorities to CPUs.  Namely,
 the priority of a given CPU reflects its highest HWP performance level which
 causes the CPU scheduler to generally prefer more performant CPUs, so the less
-performant CPUs are used when the other ones are fully loaded.  However, SMT
+performant CPUs are used when the other ones are fully loaded.  SMT siblings
-siblings (that is, logical CPUs sharing one physical core) are treated in a
+(that is, logical CPUs sharing one physical core) are given the same priority.
-special way such that if one of them is in use, the effective priority of the
+The scheduler can pull tasks from lower-priority cores and place them on any
-other ones is lowered below the priorities of the CPUs located in the other
+sibling.  Since the scheduler spreads tasks among physical cores, tasks will be
-physical cores.
+placed on the SMT siblings of physical cores only after all physical cores are
+busy.
 
 This approach maximizes performance in the majority of cases, but unfortunately
 it also leads to excessive energy usage in some important scenarios, like video

Documentation/crypto/krb5.rst

@@ -158,13 +158,22 @@ returned.
 When a message has been received, the location and size of the data with the
 message can be determined by calling::
 
-	void crypto_krb5_where_is_the_data(const struct krb5_enctype *krb5,
+	int crypto_krb5_where_is_the_data(const struct krb5_enctype *krb5,
-					   enum krb5_crypto_mode mode,
+					  enum krb5_crypto_mode mode,
-					   size_t *_offset, size_t *_len);
+					  size_t *_offset, size_t *_len);
 
 The caller provides the offset and length of the message to the function, which
 then alters those values to indicate the region containing the data (plus any
-padding).  It is up to the caller to determine how much padding there is.
+padding).  It is up to the caller to determine how much padding there is.  The
+function returns an error if the length is too small or if the mode is
+unsupported.  An additional function::
+
+	int crypto_krb5_check_data_len(const struct krb5_enctype *krb5,
+				       enum krb5_crypto_mode mode,
+				       size_t len, size_t min_content);
+
+is provided to just do a basic check that the decrypted/verified message would
+have a sufficient minimum payload.
 
 Preparation Functions
 ---------------------

Documentation/devicetree/bindings/display/msm/dp-controller.yaml

@@ -219,6 +219,7 @@ allOf:
           - required:
               - "#sound-dai-cells"
       else:
+        $ref: /schemas/sound/dai-common.yaml#
         properties:
           aux-bus: false
         required:
@@ -243,7 +244,7 @@ allOf:
         clocks:
           minItems: 5
           maxItems: 5
-        clocks-names:
+        clock-names:
           minItems: 5
           maxItems: 5
 
@@ -264,7 +265,7 @@ allOf:
         clocks:
           minItems: 5
           maxItems: 6
-        clocks-names:
+        clock-names:
           minItems: 5
           maxItems: 6
 
@@ -277,7 +278,6 @@ allOf:
               - qcom,sc8180x-dp
               - qcom,sdm845-dp
               - qcom,sm8350-dp
-              - qcom,sm8650-dp
     then:
       properties:
         reg:
@@ -286,6 +286,24 @@ allOf:
         clocks:
           minItems: 6
           maxItems: 6
+        clock-names:
+          minItems: 6
+          maxItems: 6
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sm8650-dp
+    then:
+      properties:
+        reg:
+          minItems: 5
+          maxItems: 9
+        clocks:
+          minItems: 6
+          maxItems: 6
         clocks-names:
           minItems: 6
           maxItems: 6
@@ -306,7 +324,7 @@ allOf:
         clocks:
           minItems: 6
           maxItems: 8
-        clocks-names:
+        clock-names:
           minItems: 6
           maxItems: 8
 
@@ -326,7 +344,7 @@ allOf:
         clocks:
           minItems: 5
           maxItems: 6
-        clocks-names:
+        clock-names:
           minItems: 5
           maxItems: 6
 

Documentation/devicetree/bindings/display/msm/qcom,eliza-mdss.yaml

@@ -119,7 +119,7 @@ examples:
         mdss_mdp: display-controller@ae01000 {
             compatible = "qcom,eliza-dpu";
             reg = <0x0ae01000 0x93000>,
-                  <0x0aeb0000 0x2008>;
+                  <0x0aeb0000 0x3000>;
             reg-names = "mdp",
                         "vbif";
 
@@ -304,7 +304,7 @@ examples:
         mdss_dsi0_phy: phy@ae95000 {
             compatible = "qcom,eliza-dsi-phy-4nm", "qcom,sm8650-dsi-phy-4nm";
             reg = <0x0ae95000 0x200>,
-                  <0x0ae95200 0x280>,
+                  <0x0ae95200 0x300>,
                   <0x0ae95500 0x400>;
             reg-names = "dsi_phy",
                         "dsi_phy_lane",
@@ -388,7 +388,7 @@ examples:
         mdss_dsi1_phy: phy@ae97000 {
             compatible = "qcom,eliza-dsi-phy-4nm", "qcom,sm8650-dsi-phy-4nm";
             reg = <0x0ae97000 0x200>,
-                  <0x0ae97200 0x280>,
+                  <0x0ae97200 0x300>,
                   <0x0ae97500 0x400>;
             reg-names = "dsi_phy",
                         "dsi_phy_lane",
@@ -407,11 +407,15 @@ examples:
 
         displayport-controller@af54000 {
             compatible = "qcom,eliza-dp", "qcom,sm8650-dp";
-            reg = <0xaf54000 0x104>,
+            reg = <0x0af54000 0x200>,
-                  <0xaf54200 0xc0>,
+                  <0x0af54200 0x200>,
-                  <0xaf55000 0x770>,
+                  <0x0af55000 0xc00>,
-                  <0xaf56000 0x9c>,
+                  <0x0af56000 0x400>,
-                  <0xaf57000 0x9c>;
+                  <0x0af57000 0x400>,
+                  <0x0af58000 0x400>,
+                  <0x0af59000 0x400>,
+                  <0x0af5a000 0x600>,
+                  <0x0af5b000 0x600>;
 
             interrupts-extended = <&mdss 12>;
 

Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml

@@ -70,7 +70,7 @@ examples:
     display-controller@ae01000 {
         compatible = "qcom,sm8650-dpu";
         reg = <0x0ae01000 0x8f000>,
-              <0x0aeb0000 0x2008>;
+              <0x0aeb0000 0x3000>;
         reg-names = "mdp", "vbif";
 
         clocks = <&gcc_axi_clk>,

Documentation/devicetree/bindings/display/msm/qcom,sm8650-mdss.yaml

@@ -112,7 +112,7 @@ examples:
         display-controller@ae01000 {
             compatible = "qcom,sm8650-dpu";
             reg = <0x0ae01000 0x8f000>,
-                  <0x0aeb0000 0x2008>;
+                  <0x0aeb0000 0x3000>;
             reg-names = "mdp", "vbif";
 
             clocks = <&gcc_axi_clk>,

Documentation/devicetree/bindings/display/msm/qcom,sm8750-mdss.yaml

@@ -117,7 +117,7 @@ examples:
             display-controller@ae01000 {
                 compatible = "qcom,sm8750-dpu";
                 reg = <0x0ae01000 0x93000>,
-                      <0x0aeb0000 0x2008>;
+                      <0x0aeb0000 0x3000>;
                 reg-names = "mdp",
                             "vbif";
 
@@ -389,11 +389,15 @@ examples:
 
             displayport-controller@af54000 {
                 compatible = "qcom,sm8750-dp", "qcom,sm8650-dp";
-                reg = <0xaf54000 0x104>,
+                reg = <0x0af54000 0x200>,
-                      <0xaf54200 0xc0>,
+                      <0x0af54200 0x200>,
-                      <0xaf55000 0x770>,
+                      <0x0af55000 0xc00>,
-                      <0xaf56000 0x9c>,
+                      <0x0af56000 0x400>,
-                      <0xaf57000 0x9c>;
+                      <0x0af57000 0x400>,
+                      <0x0af58000 0x400>,
+                      <0x0af59000 0x400>,
+                      <0x0af5a000 0x600>,
+                      <0x0af5b000 0x600>;
 
                 interrupts-extended = <&mdss 12>;
 

Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml

@@ -73,6 +73,15 @@ properties:
       HSP CSR is to control and get status of different high-speed peripherals
       (such as Ethernet, USB, SATA, etc.) via register, which can tune
       board-level's parameters of PHY, etc.
+
+      Additional background information about the High-Speed Subsystem
+      and the HSP CSR block is available in Chapter 10 ("High-Speed Interface")
+      of the EIC7700X SoC Technical Reference Manual, Part 4
+      (EIC7700X_SoC_Technical_Reference_Manual_Part4.pdf). The manual is
+      publicly available at
+      https://github.com/eswincomputing/EIC7700X-SoC-Technical-Reference-Manual/releases
+
+      This reference is provided for background information only.
     $ref: /schemas/types.yaml#/definitions/phandle-array
     items:
       - items:
@@ -82,6 +91,8 @@ properties:
           - description: Offset of AXI clock controller Low-Power request
                          register
           - description: Offset of register controlling TX/RX clock delay
+          - description: Optional offset of register controlling TXD delay
+          - description: Optional offset of register controlling RXD delay
 
 required:
   - compatible
@@ -116,7 +127,7 @@ examples:
         reset-names = "stmmaceth";
         rx-internal-delay-ps = <200>;
         tx-internal-delay-ps = <200>;
-        eswin,hsp-sp-csr = <&hsp_sp_csr 0x100 0x108 0x118>;
+        eswin,hsp-sp-csr = <&hsp_sp_csr 0x100 0x108 0x118 0x114 0x11c>;
         snps,axi-config = <&stmmac_axi_setup>;
         snps,aal;
         snps,fixed-burst;

Documentation/devicetree/bindings/spi/fsl,spi-fsl-qspi.yaml

@@ -20,6 +20,9 @@ properties:
           - fsl,ls1021a-qspi
           - fsl,ls2080a-qspi
           - spacemit,k1-qspi
+      - items:
+          - const: spacemit,k3-qspi
+          - const: spacemit,k1-qspi
       - items:
           - enum:
               - fsl,ls1043a-qspi

Documentation/networking/device_drivers/ethernet/3com/3c509.rst

@@ -0,0 +1,249 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=============================================================================
+Linux and the 3Com EtherLink III Series Ethercards (driver v1.18c and higher)
+=============================================================================
+
+This file contains the instructions and caveats for v1.18c and higher versions
+of the 3c509 driver. You should not use the driver without reading this file.
+
+release 1.0
+
+28 February 2002
+
+Current maintainer (corrections to):
+  Maciej W. Rozycki <macro@orcam.me.uk>
+
+Introduction
+============
+
+The following are notes and information on using the 3Com EtherLink III series
+ethercards in Linux. These cards are commonly known by the most widely-used
+card's 3Com model number, 3c509. They are all 10mb/s ISA-bus cards and shouldn't
+be (but sometimes are) confused with the similarly-numbered PCI-bus "3c905"
+(aka "Vortex" or "Boomerang") series.  Kernel support for the 3c509 family is
+provided by the module 3c509.c, which has code to support all of the following
+models:
+
+ - 3c509 (original ISA card)
+ - 3c509B (later revision of the ISA card; supports full-duplex)
+ - 3c589 (PCMCIA)
+ - 3c589B (later revision of the 3c589; supports full-duplex)
+ - 3c579 (EISA)
+
+Large portions of this documentation were heavily borrowed from the guide
+written the original author of the 3c509 driver, Donald Becker. The master
+copy of that document, which contains notes on older versions of the driver,
+currently resides on Scyld web server: http://www.scyld.com/.
+
+
+Special Driver Features
+=======================
+
+Overriding card settings
+
+The driver allows boot- or load-time overriding of the card's detected IOADDR,
+IRQ, and transceiver settings, although this capability shouldn't generally be
+needed except to enable full-duplex mode (see below). An example of the syntax
+for LILO parameters for doing this::
+
+    ether=10,0x310,3,0x3c509,eth0
+
+This configures the first found 3c509 card for IRQ 10, base I/O 0x310, and
+transceiver type 3 (10base2). The flag "0x3c509" must be set to avoid conflicts
+with other card types when overriding the I/O address. When the driver is
+loaded as a module, only the IRQ may be overridden. For example,
+setting two cards to IRQ10 and IRQ11 is done by using the irq module
+option::
+
+   options 3c509 irq=10,11
+
+
+Full-duplex mode
+================
+
+The v1.18c driver added support for the 3c509B's full-duplex capabilities.
+In order to enable and successfully use full-duplex mode, three conditions
+must be met:
+
+(a) You must have a Etherlink III card model whose hardware supports full-
+duplex operations. Currently, the only members of the 3c509 family that are
+positively known to support full-duplex are the 3c509B (ISA bus) and 3c589B
+(PCMCIA) cards. Cards without the "B" model designation do *not* support
+full-duplex mode; these include the original 3c509 (no "B"), the original
+3c589, the 3c529 (MCA bus), and the 3c579 (EISA bus).
+
+(b) You must be using your card's 10baseT transceiver (i.e., the RJ-45
+connector), not its AUI (thick-net) or 10base2 (thin-net/coax) interfaces.
+AUI and 10base2 network cabling is physically incapable of full-duplex
+operation.
+
+(c) Most importantly, your 3c509B must be connected to a link partner that is
+itself full-duplex capable. This is almost certainly one of two things: a full-
+duplex-capable  Ethernet switch (*not* a hub), or a full-duplex-capable NIC on
+another system that's connected directly to the 3c509B via a crossover cable.
+
+Full-duplex mode can be enabled using 'ethtool'.
+
+.. warning::
+
+  Extremely important caution concerning full-duplex mode
+
+  Understand that the 3c509B's hardware's full-duplex support is much more
+  limited than that provide by more modern network interface cards. Although
+  at the physical layer of the network it fully supports full-duplex operation,
+  the card was designed before the current Ethernet auto-negotiation (N-way)
+  spec was written. This means that the 3c509B family ***cannot and will not
+  auto-negotiate a full-duplex connection with its link partner under any
+  circumstances, no matter how it is initialized***. If the full-duplex mode
+  of the 3c509B is enabled, its link partner will very likely need to be
+  independently _forced_ into full-duplex mode as well; otherwise various nasty
+  failures will occur - at the very least, you'll see massive numbers of packet
+  collisions. This is one of very rare circumstances where disabling auto-
+  negotiation and forcing the duplex mode of a network interface card or switch
+  would ever be necessary or desirable.
+
+
+Available Transceiver Types
+===========================
+
+For versions of the driver v1.18c and above, the available transceiver types are:
+
+== =========================================================================
+0  transceiver type from EEPROM config (normally 10baseT); force half-duplex
+1  AUI (thick-net / DB15 connector)
+2  (undefined)
+3  10base2 (thin-net == coax / BNC connector)
+4  10baseT (RJ-45 connector); force half-duplex mode
+8  transceiver type and duplex mode taken from card's EEPROM config settings
+12 10baseT (RJ-45 connector); force full-duplex mode
+== =========================================================================
+
+Prior to driver version 1.18c, only transceiver codes 0-4 were supported. Note
+that the new transceiver codes 8 and 12 are the *only* ones that will enable
+full-duplex mode, no matter what the card's detected EEPROM settings might be.
+This insured that merely upgrading the driver from an earlier version would
+never automatically enable full-duplex mode in an existing installation;
+it must always be explicitly enabled via one of these code in order to be
+activated.
+
+The transceiver type can be changed using 'ethtool'.
+
+
+Interpretation of error messages and common problems
+----------------------------------------------------
+
+Error Messages
+^^^^^^^^^^^^^^
+
+eth0: Infinite loop in interrupt, status 2011.
+These are "mostly harmless" message indicating that the driver had too much
+work during that interrupt cycle. With a status of 0x2011 you are receiving
+packets faster than they can be removed from the card. This should be rare
+or impossible in normal operation. Possible causes of this error report are:
+
+   - a "green" mode enabled that slows the processor down when there is no
+     keyboard activity.
+
+   - some other device or device driver hogging the bus or disabling interrupts.
+     Check /proc/interrupts for excessive interrupt counts. The timer tick
+     interrupt should always be incrementing faster than the others.
+
+No received packets
+^^^^^^^^^^^^^^^^^^^
+
+If a 3c509, 3c562 or 3c589 can successfully transmit packets, but never
+receives packets (as reported by /proc/net/dev or 'ifconfig') you likely
+have an interrupt line problem. Check /proc/interrupts to verify that the
+card is actually generating interrupts. If the interrupt count is not
+increasing you likely have a physical conflict with two devices trying to
+use the same ISA IRQ line. The common conflict is with a sound card on IRQ10
+or IRQ5, and the easiest solution is to move the 3c509 to a different
+interrupt line. If the device is receiving packets but 'ping' doesn't work,
+you have a routing problem.
+
+Tx Carrier Errors Reported in /proc/net/dev
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+
+If an EtherLink III appears to transmit packets, but the "Tx carrier errors"
+field in /proc/net/dev increments as quickly as the Tx packet count, you
+likely have an unterminated network or the incorrect media transceiver selected.
+
+3c509B card is not detected on machines with an ISA PnP BIOS.
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+While the updated driver works with most PnP BIOS programs, it does not work
+with all. This can be fixed by disabling PnP support using the 3Com-supplied
+setup program.
+
+3c509 card is not detected on overclocked machines
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Increase the delay time in id_read_eeprom() from the current value, 500,
+to an absurdly high value, such as 5000.
+
+
+Decoding Status and Error Messages
+----------------------------------
+
+
+The bits in the main status register are:
+
+=====	======================================
+value 	description
+=====	======================================
+0x01 	Interrupt latch
+0x02 	Tx overrun, or Rx underrun
+0x04 	Tx complete
+0x08 	Tx FIFO room available
+0x10 	A complete Rx packet has arrived
+0x20 	A Rx packet has started to arrive
+0x40 	The driver has requested an interrupt
+0x80 	Statistics counter nearly full
+=====	======================================
+
+The bits in the transmit (Tx) status word are:
+
+=====	============================================
+value	description
+=====	============================================
+0x02	Out-of-window collision.
+0x04	Status stack overflow (normally impossible).
+0x08	16 collisions.
+0x10	Tx underrun (not enough PCI bus bandwidth).
+0x20	Tx jabber.
+0x40	Tx interrupt requested.
+0x80	Status is valid (this should always be set).
+=====	============================================
+
+
+When a transmit error occurs the driver produces a status message such as::
+
+   eth0: Transmit error, Tx status register 82
+
+The two values typically seen here are:
+
+0x82
+^^^^
+
+Out of window collision. This typically occurs when some other Ethernet
+host is incorrectly set to full duplex on a half duplex network.
+
+0x88
+^^^^
+
+16 collisions. This typically occurs when the network is exceptionally busy
+or when another host doesn't correctly back off after a collision. If this
+error is mixed with 0x82 errors it is the result of a host incorrectly set
+to full duplex (see above).
+
+Both of these errors are the result of network problems that should be
+corrected. They do not represent driver malfunction.
+
+
+Revision history (this file)
+============================
+
+28Feb02 v1.0  DR   New; major portions based on Becker original 3c509 docs
+

Documentation/networking/device_drivers/ethernet/index.rst

@@ -10,6 +10,7 @@ Contents:
 .. toctree::
    :maxdepth: 2
 
+   3com/3c509
    3com/vortex
    amazon/ena
    altera/altera_tse

MAINTAINERS

@@ -2064,7 +2064,7 @@ F:	Documentation/devicetree/bindings/display/snps,arcpgu.txt
 F:	drivers/gpu/drm/tiny/arcpgu.c
 
 ARCNET NETWORK LAYER
-M:	Michael Grzeschik <m.grzeschik@pengutronix.de>
+M:	Michael Grzeschik <mgr@kernel.org>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/arcnet/
@@ -3367,7 +3367,9 @@ F:	drivers/irqchip/irq-rda-intc.c
 F:	drivers/tty/serial/rda-uart.c
 
 ARM/REALTEK ARCHITECTURE
-M:	Andreas Färber <afaerber@suse.de>
+M:	James Tai <james.tai@realtek.com>
+M:	Yu-Chun Lin <eleanor.lin@realtek.com>
+R:	Andreas Färber <afaerber@suse.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	linux-realtek-soc@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
@@ -3375,6 +3377,7 @@ F:	Documentation/devicetree/bindings/arm/realtek.yaml
 F:	arch/arm/boot/dts/realtek/
 F:	arch/arm/mach-realtek/
 F:	arch/arm64/boot/dts/realtek/
+F:	drivers/pinctrl/realtek/
 
 ARM/RISC-V/RENESAS ARCHITECTURE
 M:	Geert Uytterhoeven <geert+renesas@glider.be>
@@ -13868,6 +13871,7 @@ M:	Pratyush Yadav <pratyush@kernel.org>
 R:	Dave Young <ruirui.yang@linux.dev>
 L:	kexec@lists.infradead.org
 S:	Maintained
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux.git
 F:	Documentation/admin-guide/kdump/
 F:	fs/proc/vmcore.c
 F:	include/linux/crash_core.h
@@ -14185,6 +14189,7 @@ M:	Pasha Tatashin <pasha.tatashin@soleen.com>
 M:	Pratyush Yadav <pratyush@kernel.org>
 L:	kexec@lists.infradead.org
 W:	http://kernel.org/pub/linux/utils/kernel/kexec/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux.git
 F:	include/linux/kexec.h
 F:	include/uapi/linux/kexec.h
 F:	kernel/kexec*
@@ -14901,6 +14906,7 @@ LIVE UPDATE
 M:	Pasha Tatashin <pasha.tatashin@soleen.com>
 M:	Mike Rapoport <rppt@kernel.org>
 M:	Pratyush Yadav <pratyush@kernel.org>
+L:	kexec@lists.infradead.org
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux.git
@@ -18631,6 +18637,7 @@ F:	tools/testing/selftests/net/
 X:	Documentation/networking/mac80211-injection.rst
 X:	Documentation/networking/mac80211_hwsim/
 X:	Documentation/networking/regulatory.rst
+X:	include/net/bluetooth/
 X:	include/net/cfg80211.h
 X:	include/net/ieee80211_radiotap.h
 X:	include/net/iw_handler.h
@@ -18940,7 +18947,8 @@ F:	drivers/hid/hid-nintendo*
 
 NIOS2 ARCHITECTURE
 M:	Dinh Nguyen <dinguyen@kernel.org>
-S:	Maintained
+M:	Simon Schuster <schuster.simon@siemens-energy.com>
+S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux.git
 F:	arch/nios2/
 
@@ -20735,15 +20743,13 @@ F:	Documentation/devicetree/bindings/pci/intel,keembay-pcie*
 F:	drivers/pci/controller/dwc/pcie-keembay.c
 
 PCIE DRIVER FOR INTEL LGM GW SOC
-M:	Chuanhua Lei <lchuanhua@maxlinear.com>
 L:	linux-pci@vger.kernel.org
-S:	Maintained
+S:	Orphan
 F:	Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml
 F:	drivers/pci/controller/dwc/pcie-intel-gw.c
 
 PCIE DRIVER FOR MEDIATEK
 M:	Ryder Lee <ryder.lee@mediatek.com>
-M:	Jianjun Wang <jianjun.wang@mediatek.com>
 L:	linux-pci@vger.kernel.org
 L:	linux-mediatek@lists.infradead.org (moderated for non-subscribers)
 S:	Supported

Makefile

@@ -2,7 +2,7 @@
 VERSION = 7
 PATCHLEVEL = 1
 SUBLEVEL = 0
-EXTRAVERSION = -rc4
+EXTRAVERSION = -rc5
 NAME = Baby Opossum Posse
 
 # *DOCUMENTATION*

arch/alpha/include/asm/Kbuild

@@ -5,4 +5,5 @@ generic-y += agp.h
 generic-y += asm-offsets.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
+generic-y += ring_buffer.h
 generic-y += text-patching.h

arch/arc/include/asm/Kbuild

@@ -5,5 +5,6 @@ generic-y += extable.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
 generic-y += parport.h
+generic-y += ring_buffer.h
 generic-y += user.h
 generic-y += text-patching.h

arch/arm/boot/dts/renesas/r7s72100-genmai.dts

@@ -34,9 +34,6 @@
 		clocks = <&mstp9_clks R7S72100_CLK_SPIBSC0>;
 		power-domains = <&cpg_clocks>;
 
-		#address-cells = <1>;
-		#size-cells = <1>;
-
 		partitions {
 			compatible = "fixed-partitions";
 			#address-cells = <1>;

arch/arm/boot/dts/renesas/r7s72100-rskrza1.dts

@@ -36,8 +36,6 @@
 		power-domains = <&cpg_clocks>;
 		bank-width = <4>;
 		device-width = <1>;
-		#address-cells = <1>;
-		#size-cells = <1>;
 
 		partitions {
 			compatible = "fixed-partitions";

arch/arm/boot/dts/renesas/r7s72100.dtsi

@@ -37,7 +37,7 @@
 		clock-div = <3>;
 	};
 
-	bsc: bus {
+	bsc: bus@0 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;

arch/arm/boot/dts/renesas/r8a7778.dtsi

@@ -40,7 +40,7 @@
 		spi2 = &hspi2;
 	};
 
-	lbsc: bus {
+	lbsc: bus@0 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;

arch/arm/boot/dts/renesas/r8a7779.dtsi

@@ -704,7 +704,7 @@
 		};
 	};
 
-	lbsc: bus {
+	lbsc: bus@0 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;

arch/arm/boot/dts/renesas/r8a7792.dtsi

@@ -86,7 +86,7 @@
 		bootph-all;
 	};
 
-	lbsc: bus {
+	lbsc: bus@0 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;

arch/arm/include/asm/Kbuild

@@ -3,6 +3,7 @@ generic-y += early_ioremap.h
 generic-y += extable.h
 generic-y += flat.h
 generic-y += parport.h
+generic-y += ring_buffer.h
 
 generated-y += mach-types.h
 generated-y += unistd-nr.h

arch/arm/mach-versatile/integrator_cp.c

@@ -86,14 +86,6 @@ static u64 notrace intcp_read_sched_clock(void)
 	return val;
 }
 
-static void __init intcp_init_early(void)
-{
-	cm_map = syscon_regmap_lookup_by_compatible("arm,core-module-integrator");
-	if (IS_ERR(cm_map))
-		return;
-	sched_clock_register(intcp_read_sched_clock, 32, 24000000);
-}
-
 static void __init intcp_init_irq_of(void)
 {
 	cm_init();
@@ -119,6 +111,10 @@ static void __init intcp_init_of(void)
 {
 	struct device_node *cpcon;
 
+	cm_map = syscon_regmap_lookup_by_compatible("arm,core-module-integrator");
+	if (!IS_ERR(cm_map))
+		sched_clock_register(intcp_read_sched_clock, 32, 24000000);
+
 	cpcon = of_find_matching_node(NULL, intcp_syscon_match);
 	if (!cpcon)
 		return;
@@ -138,7 +134,6 @@ static const char * intcp_dt_board_compat[] = {
 DT_MACHINE_START(INTEGRATOR_CP_DT, "ARM Integrator/CP (Device Tree)")
 	.reserve	= integrator_reserve,
 	.map_io		= intcp_map_io,
-	.init_early	= intcp_init_early,
 	.init_irq	= intcp_init_irq_of,
 	.init_machine	= intcp_init_of,
 	.dt_compat      = intcp_dt_board_compat,

arch/arm64/boot/dts/renesas/draak-ebisu-panel-aa104xd12.dtso

@@ -27,7 +27,12 @@
 	status = "okay";
 
 	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
 		port@1 {
+			reg = <1>;
+
 			lvds1_out: endpoint {
 				remote-endpoint = <&panel_in>;
 			};

arch/arm64/boot/dts/renesas/r8a78000.dtsi

@@ -699,7 +699,7 @@
 				     "renesas,rcar-gen5-scif", "renesas,scif";
 			reg = <0 0xc0700000 0 0x40>;
 			interrupts = <GIC_ESPI 10 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd16>, <&scif_clk>;
+			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd4>, <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
 			status = "disabled";
 		};
@@ -709,7 +709,7 @@
 				     "renesas,rcar-gen5-scif", "renesas,scif";
 			reg = <0 0xc0704000 0 0x40>;
 			interrupts = <GIC_ESPI 11 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd16>, <&scif_clk>;
+			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd4>, <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
 			status = "disabled";
 		};
@@ -719,7 +719,7 @@
 				     "renesas,rcar-gen5-scif", "renesas,scif";
 			reg = <0 0xc0708000 0 0x40>;
 			interrupts = <GIC_ESPI 12 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd16>, <&scif_clk>;
+			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd4>, <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
 			status = "disabled";
 		};
@@ -729,7 +729,7 @@
 				     "renesas,rcar-gen5-scif", "renesas,scif";
 			reg = <0 0xc070c000 0 0x40>;
 			interrupts = <GIC_ESPI 13 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd16>, <&scif_clk>;
+			clocks = <&dummy_clk_sgasyncd16>, <&dummy_clk_sgasyncd4>, <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
 			status = "disabled";
 		};

arch/arm64/boot/dts/renesas/r9a09g056.dtsi

@@ -1327,6 +1327,7 @@
 			resets = <&cpg 0xaf>;
 			power-domains = <&cpg>;
 			#reset-cells = <0>;
+			#mux-state-cells = <1>;
 			status = "disabled";
 		};
 

arch/arm64/boot/dts/renesas/r9a09g057.dtsi

@@ -1345,6 +1345,7 @@
 			resets = <&cpg 0xaf>;
 			power-domains = <&cpg>;
 			#reset-cells = <0>;
+			#mux-state-cells = <1>;
 			status = "disabled";
 		};
 
@@ -1355,6 +1356,7 @@
 			resets = <&cpg 0xaf>;
 			power-domains = <&cpg>;
 			#reset-cells = <0>;
+			#mux-state-cells = <1>;
 			status = "disabled";
 		};
 

arch/arm64/boot/dts/renesas/rz-smarc-cru-csi-ov5645.dtsi

@@ -46,7 +46,12 @@
 	status = "okay";
 
 	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
 		port@0 {
+			reg = <0>;
+
 			csi2_in: endpoint {
 				clock-lanes = <0>;
 				data-lanes = <1 2>;

arch/arm64/boot/dts/renesas/rz-smarc-du-adv7513.dtsi

@@ -26,7 +26,12 @@
 	status = "okay";
 
 	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
 		port@0 {
+			reg = <0>;
+
 			du_out_rgb: endpoint {
 				remote-endpoint = <&adv7513_in>;
 			};

arch/arm64/boot/dts/renesas/salvator-panel-aa104xd12.dtso

@@ -27,7 +27,12 @@
 	status = "okay";
 
 	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
 		port@1 {
+			reg = <1>;
+
 			lvds0_out: endpoint {
 				remote-endpoint = <&panel_in>;
 			};

arch/arm64/include/asm/insn.h

@@ -409,7 +409,7 @@ __AARCH64_INSN_FUNCS(cbz,	0x7F000000, 0x34000000)
 __AARCH64_INSN_FUNCS(cbnz,	0x7F000000, 0x35000000)
 __AARCH64_INSN_FUNCS(tbz,	0x7F000000, 0x36000000)
 __AARCH64_INSN_FUNCS(tbnz,	0x7F000000, 0x37000000)
-__AARCH64_INSN_FUNCS(bcond,	0xFF000010, 0x54000000)
+__AARCH64_INSN_FUNCS(bcond,	0xFF000000, 0x54000000)
 __AARCH64_INSN_FUNCS(svc,	0xFFE0001F, 0xD4000001)
 __AARCH64_INSN_FUNCS(hvc,	0xFFE0001F, 0xD4000002)
 __AARCH64_INSN_FUNCS(smc,	0xFFE0001F, 0xD4000003)

arch/arm64/include/asm/page.h

@@ -33,7 +33,7 @@ struct folio *vma_alloc_zeroed_movable_folio(struct vm_area_struct *vma,
 						unsigned long vaddr);
 #define vma_alloc_zeroed_movable_folio vma_alloc_zeroed_movable_folio
 
-bool tag_clear_highpages(struct page *to, int numpages);
+bool tag_clear_highpages(struct page *to, int numpages, bool clear_pages);
 #define __HAVE_ARCH_TAG_CLEAR_HIGHPAGES
 
 #define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)

arch/arm64/include/asm/ring_buffer.h

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _ASM_ARM64_RING_BUFFER_H
+#define _ASM_ARM64_RING_BUFFER_H
+
+#include <asm/cacheflush.h>
+
+/* Flush D-cache on persistent ring buffer */
+#define arch_ring_buffer_flush_range(start, end)	dcache_clean_pop(start, end)
+
+#endif /* _ASM_ARM64_RING_BUFFER_H */

arch/arm64/include/asm/tlb.h

@@ -53,7 +53,8 @@ static inline int tlb_get_level(struct mmu_gather *tlb)
 static inline void tlb_flush(struct mmu_gather *tlb)
 {
 	struct vm_area_struct vma = TLB_FLUSH_VMA(tlb->mm, 0);
-	tlbf_t flags = tlb->freed_tables ? TLBF_NONE : TLBF_NOWALKCACHE;
+	tlbf_t flags = (tlb->freed_tables || tlb->unshared_tables) ?
+			TLBF_NONE : TLBF_NOWALKCACHE;
 	unsigned long stride = tlb_get_unmap_size(tlb);
 	int tlb_level = tlb_get_level(tlb);
 

arch/arm64/kvm/arm.c

@@ -555,8 +555,10 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
 	kvm_destroy_mpidr_data(vcpu->kvm);
 
 	err = kvm_vgic_vcpu_init(vcpu);
-	if (err)
+	if (err) {
+		kvm_vgic_vcpu_destroy(vcpu);
 		return err;
+	}
 
 	err = kvm_share_hyp(vcpu, vcpu + 1);
 	if (err)

arch/arm64/kvm/hyp/nvhe/trace.c

@@ -164,13 +164,16 @@ static int hyp_trace_buffer_load(struct hyp_trace_buffer *trace_buffer,
 	return ret;
 }
 
-static bool hyp_trace_desc_validate(struct hyp_trace_desc *desc, size_t desc_size)
+static bool hyp_trace_desc_is_valid(struct hyp_trace_desc *desc, size_t desc_size)
 {
 	struct ring_buffer_desc *rb_desc;
 	unsigned int cpu;
 	size_t nr_bpages;
 	void *desc_end;
 
+	if (!is_protected_kvm_enabled())
+		return true;
+
 	/*
 	 * Both desc_size and bpages_backing_size are untrusted host-provided
 	 * values. We rely on __pkvm_host_donate_hyp() to enforce their validity.
@@ -212,8 +215,10 @@ int __tracing_load(unsigned long desc_hva, size_t desc_size)
 	if (ret)
 		return ret;
 
-	if (!hyp_trace_desc_validate(desc, desc_size))
+	if (!hyp_trace_desc_is_valid(desc, desc_size)) {
+		ret = -EINVAL;
 		goto err_release_desc;
+	}
 
 	hyp_spin_lock(&trace_buffer.lock);
 

arch/arm64/kvm/vgic/vgic-its.c

@@ -2307,6 +2307,10 @@ static int vgic_its_restore_dte(struct vgic_its *its, u32 id,
 	/* dte entry is valid */
 	offset = (entry & KVM_ITS_DTE_NEXT_MASK) >> KVM_ITS_DTE_NEXT_SHIFT;
 
+	/* Mimic the MAPD behaviour and reject invalid EID bits. */
+	if (num_eventid_bits > VITS_TYPER_IDBITS)
+		return -EINVAL;
+
 	if (!vgic_its_check_id(its, baser, id, NULL))
 		return -EINVAL;
 

arch/arm64/mm/fault.c

@@ -1018,7 +1018,7 @@ struct folio *vma_alloc_zeroed_movable_folio(struct vm_area_struct *vma,
 	return vma_alloc_folio(flags, 0, vma, vaddr);
 }
 
-bool tag_clear_highpages(struct page *page, int numpages)
+bool tag_clear_highpages(struct page *page, int numpages, bool clear_pages)
 {
 	/*
 	 * Check if MTE is supported and fall back to clear_highpage().
@@ -1026,13 +1026,16 @@ bool tag_clear_highpages(struct page *page, int numpages)
 	 * post_alloc_hook() will invoke tag_clear_highpages().
 	 */
 	if (!system_supports_mte())
-		return false;
+		return clear_pages;
 
 	/* Newly allocated pages, shouldn't have been tagged yet */
 	for (int i = 0; i < numpages; i++, page++) {
 		WARN_ON_ONCE(!try_page_mte_tagging(page));
-		mte_zero_clear_page_tags(page_address(page));
+		if (clear_pages)
+			mte_zero_clear_page_tags(page_address(page));
+		else
+			mte_clear_page_tags(page_address(page));
 		set_page_mte_tagged(page);
 	}
-	return true;
+	return false;
 }

arch/csky/include/asm/Kbuild

@@ -9,6 +9,7 @@ generic-y += qrwlock.h
 generic-y += qrwlock_types.h
 generic-y += qspinlock.h
 generic-y += parport.h
+generic-y += ring_buffer.h
 generic-y += user.h
 generic-y += vmlinux.lds.h
 generic-y += text-patching.h

arch/hexagon/include/asm/Kbuild

@@ -5,4 +5,5 @@ generic-y += extable.h
 generic-y += iomap.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
+generic-y += ring_buffer.h
 generic-y += text-patching.h

arch/loongarch/include/asm/Kbuild

@@ -10,5 +10,6 @@ generic-y += qrwlock.h
 generic-y += user.h
 generic-y += ioctl.h
 generic-y += mmzone.h
+generic-y += ring_buffer.h
 generic-y += statfs.h
 generic-y += text-patching.h

arch/loongarch/include/asm/efi.h

@@ -30,6 +30,8 @@ static inline unsigned long efi_get_kimg_min_align(void)
 	return SZ_2M;
 }
 
-#define EFI_KIMG_PREFERRED_ADDRESS	PHYSADDR(VMLINUX_LOAD_ADDRESS)
+unsigned long efi_get_kimg_kaslr_address(void);
+
+#define EFI_KIMG_PREFERRED_ADDRESS efi_get_kimg_kaslr_address()
 
 #endif /* _ASM_LOONGARCH_EFI_H */

arch/loongarch/include/asm/paravirt.h

@@ -4,6 +4,12 @@
 
 #ifdef CONFIG_PARAVIRT
 
+#include <linux/jump_label.h>
+
+DECLARE_STATIC_KEY_FALSE(virt_preempt_key);
+DECLARE_STATIC_KEY_FALSE(virt_spin_lock_key);
+DECLARE_PER_CPU(struct kvm_steal_time, steal_time);
+
 int __init pv_ipi_init(void);
 int __init pv_time_init(void);
 int __init pv_spinlock_init(void);

arch/loongarch/include/asm/qspinlock.h

@@ -3,12 +3,9 @@
 #define _ASM_LOONGARCH_QSPINLOCK_H
 
 #include <asm/kvm_para.h>
-#include <linux/jump_label.h>
+#include <asm/paravirt.h>
 
 #ifdef CONFIG_PARAVIRT
-DECLARE_STATIC_KEY_FALSE(virt_preempt_key);
-DECLARE_STATIC_KEY_FALSE(virt_spin_lock_key);
-DECLARE_PER_CPU(struct kvm_steal_time, steal_time);
 
 #define virt_spin_lock virt_spin_lock
 

arch/loongarch/kernel/kprobes.c

@@ -60,16 +60,18 @@ NOKPROBE_SYMBOL(arch_prepare_kprobe);
 /* Install breakpoint in text */
 void arch_arm_kprobe(struct kprobe *p)
 {
-	*p->addr = KPROBE_BP_INSN;
+	u32 insn = KPROBE_BP_INSN;
-	flush_insn_slot(p);
+
+	larch_insn_text_copy(p->addr, &insn, LOONGARCH_INSN_SIZE);
 }
 NOKPROBE_SYMBOL(arch_arm_kprobe);
 
 /* Remove breakpoint from text */
 void arch_disarm_kprobe(struct kprobe *p)
 {
-	*p->addr = p->opcode;
+	u32 insn = p->opcode;
-	flush_insn_slot(p);
+
+	larch_insn_text_copy(p->addr, &insn, LOONGARCH_INSN_SIZE);
 }
 NOKPROBE_SYMBOL(arch_disarm_kprobe);
 
@@ -184,16 +186,16 @@ static bool reenter_kprobe(struct kprobe *p, struct pt_regs *regs,
 			   struct kprobe_ctlblk *kcb)
 {
 	switch (kcb->kprobe_status) {
-	case KPROBE_HIT_SS:
 	case KPROBE_HIT_SSDONE:
 	case KPROBE_HIT_ACTIVE:
 		kprobes_inc_nmissed_count(p);
 		setup_singlestep(p, regs, kcb, 1);
 		break;
+	case KPROBE_HIT_SS:
 	case KPROBE_REENTER:
 		pr_warn("Failed to recover from reentered kprobes.\n");
 		dump_kprobe(p);
-		WARN_ON_ONCE(1);
+		BUG();
 		break;
 	default:
 		WARN_ON(1);

arch/loongarch/kernel/relocate.c

@@ -134,11 +134,23 @@ early_param("nokaslr", nokaslr);
 
 #define KASLR_DISABLED_MESSAGE "KASLR is disabled by %s in %s cmdline.\n"
 
+/*
+ * Note: strictly-defined KASLR means the kernel's final runtime address
+ * has a random offset from the kernel's load address, which is implemented
+ * in relocate.c; broadly-defined KALSR means the kernel's final runtime
+ * address has a random offset from the kernel's link address (a.k.a.
+ * VMLINUX_LOAD_ADDRESS), which also include the efistlub implementation,
+ * kexec_file implementation and QEMU direct kernel boot. kaslr_disabled()
+ * return true only means strictly-defined KASLR is disabled.
+ */
 static inline __init bool kaslr_disabled(void)
 {
 	char *str;
 	const char *builtin_cmdline = CONFIG_CMDLINE;
 
+	if (kaslr_offset())
+		return true; /* KASLR is performed during early boot. */
+
 	str = strstr(builtin_cmdline, "nokaslr");
 	if (str == builtin_cmdline || (str > builtin_cmdline && *(str - 1) == ' ')) {
 		pr_info(KASLR_DISABLED_MESSAGE, "\'nokaslr\'", "built-in");
@@ -210,14 +222,52 @@ static inline void __init *determine_relocation_address(void)
 	return RELOCATED_KASLR(destination);
 }
 
+static unsigned long __init determine_initrd_address(unsigned long *size)
+{
+	unsigned long start = 0;
+	unsigned long key_length;
+	char *p, *endp, *key = "initrd=";
+
+	key_length = strlen(key);
+	p = strstr(boot_command_line, key);
+
+	if (!p) {
+		key = "initrdmem=";
+		key_length = strlen(key);
+		p = strstr(boot_command_line, key);
+	}
+
+	if (p == boot_command_line || (p > boot_command_line && *(p - 1) == ' ')) {
+		p += key_length;
+		start = memparse(p, &endp);
+		if (*endp == ',')
+			*size = memparse(endp + 1, NULL);
+	}
+
+	return start;
+}
+
 static inline int __init relocation_addr_valid(void *location_new)
 {
+	unsigned long kernel_start, kernel_size;
+	unsigned long initrd_start, initrd_size = 0;
+
 	if ((unsigned long)location_new & 0x00000ffff)
 		return 0; /* Inappropriately aligned new location */
 
 	if ((unsigned long)location_new < (unsigned long)_end)
 		return 0; /* New location overlaps original kernel */
 
+	initrd_start = determine_initrd_address(&initrd_size);
+	if (initrd_start && initrd_size) {
+		kernel_start = PHYSADDR(location_new);
+		kernel_size = (unsigned long)_end - (unsigned long)_text;
+
+		if (kernel_start < (initrd_start + initrd_size) &&
+			initrd_start < (kernel_start + kernel_size))
+			return 0; /* initrd/initramfs overlaps kernel */
+	}
+
 	return 1;
 }
 #endif

arch/loongarch/mm/init.c

@@ -123,11 +123,7 @@ void arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
 {
 	unsigned long start_pfn = start >> PAGE_SHIFT;
 	unsigned long nr_pages = size >> PAGE_SHIFT;
-	struct page *page = pfn_to_page(start_pfn);
 
-	/* With altmap the first mapped page is offset from @start */
-	if (altmap)
-		page += vmem_altmap_offset(altmap);
 	__remove_pages(start_pfn, nr_pages, altmap);
 }
 #endif

arch/m68k/include/asm/Kbuild

@@ -3,5 +3,6 @@ generated-y += syscall_table.h
 generic-y += extable.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
+generic-y += ring_buffer.h
 generic-y += spinlock.h
 generic-y += text-patching.h

arch/microblaze/include/asm/Kbuild

@@ -5,6 +5,7 @@ generic-y += extable.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
 generic-y += parport.h
+generic-y += ring_buffer.h
 generic-y += syscalls.h
 generic-y += tlb.h
 generic-y += user.h

arch/mips/include/asm/Kbuild

@@ -12,5 +12,6 @@ generic-y += mcs_spinlock.h
 generic-y += parport.h
 generic-y += qrwlock.h
 generic-y += qspinlock.h
+generic-y += ring_buffer.h
 generic-y += user.h
 generic-y += text-patching.h

arch/nios2/include/asm/Kbuild

@@ -5,6 +5,7 @@ generic-y += cmpxchg.h
 generic-y += extable.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
+generic-y += ring_buffer.h
 generic-y += spinlock.h
 generic-y += user.h
 generic-y += text-patching.h

arch/nios2/include/asm/linkage.h

@@ -12,4 +12,6 @@
 #define __ALIGN .align 4
 #define __ALIGN_STR ".align 4"
 
+#define _THIS_IP_ ({ unsigned long __ip; asm volatile("nextpc %0" : "=r" (__ip)); __ip; })
+
 #endif

arch/openrisc/include/asm/Kbuild

@@ -8,4 +8,5 @@ generic-y += spinlock_types.h
 generic-y += spinlock.h
 generic-y += qrwlock_types.h
 generic-y += qrwlock.h
+generic-y += ring_buffer.h
 generic-y += user.h

arch/parisc/include/asm/Kbuild

@@ -4,4 +4,5 @@ generated-y += syscall_table_64.h
 generic-y += agp.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
+generic-y += ring_buffer.h
 generic-y += user.h

arch/powerpc/configs/ppc6xx_defconfig

@@ -393,6 +393,7 @@ CONFIG_NETCONSOLE=m
 CONFIG_TUN=m
 CONFIG_VETH=m
 CONFIG_VIRTIO_NET=m
+CONFIG_EL3=m
 CONFIG_VORTEX=m
 CONFIG_TYPHOON=m
 CONFIG_ADAPTEC_STARFIRE=m

arch/powerpc/include/asm/Kbuild

@@ -5,4 +5,5 @@ generated-y += syscall_table_spu.h
 generic-y += agp.h
 generic-y += mcs_spinlock.h
 generic-y += qrwlock.h
+generic-y += ring_buffer.h
 generic-y += early_ioremap.h

arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi

@@ -101,16 +101,6 @@
 	status = "okay";
 };
 
-&i2c0 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&i2c0_fabric>;
-};
-
-&i2c1 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&i2c1_mssio>;
-};
-
 &mmuart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_fabric>;

arch/riscv/boot/dts/microchip/mpfs-icicle-kit-prod.dts

@@ -14,6 +14,16 @@
 		     "microchip,mpfs";
 };
 
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_fabric>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_mssio>;
+};
+
 &syscontroller {
 	microchip,bitstream-flash = <&sys_ctrl_flash>;
 };

arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts

@@ -11,3 +11,22 @@
 		     "microchip,mpfs-icicle-kit",
 		     "microchip,mpfs";
 };
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_fabric>;
+};
+
+/*
+ * Due to silicon errata, routing via MSS IOs doesn't work on ES devices.
+ * Instead, i2c1, appearing on B1/C1, which are normally MSS IOs, is routed
+ * via the fabric and back to B1/C1 via "fabric-test" functionality.
+ * This is done silently by Libero, so the iomux0 setting for i2c1 has to
+ * be fabric IO, despite tooling etc saying that MSS IOs are used.
+ *
+ * See Section 3.3 of https://ww1.microchip.com/downloads/aemDocuments/documents/FPGA/ProductDocuments/Errata/polarfiresoc/microsemi_polarfire_soc_fpga_egineering_samples_errata_er0219_v1.pdf
+ */
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_fabric>;
+};

arch/riscv/boot/dts/starfive/jh7110-common.dtsi

@@ -135,29 +135,6 @@
 	clock-frequency = <49152000>;
 };
 
-&camss {
-	assigned-clocks = <&ispcrg JH7110_ISPCLK_DOM4_APB_FUNC>,
-			  <&ispcrg JH7110_ISPCLK_MIPI_RX0_PXL>;
-	assigned-clock-rates = <49500000>, <198000000>;
-
-	ports {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		port@0 {
-			reg = <0>;
-		};
-
-		port@1 {
-			reg = <1>;
-
-			camss_from_csi2rx: endpoint {
-				remote-endpoint = <&csi2rx_to_camss>;
-			};
-		};
-	};
-};
-
 &csi2rx {
 	assigned-clocks = <&ispcrg JH7110_ISPCLK_VIN_SYS>;
 	assigned-clock-rates = <297000000>;
@@ -175,9 +152,7 @@
 		port@1 {
 			reg = <1>;
 
-			csi2rx_to_camss: endpoint {
+			/* remote CAMSS endpoint */
-				remote-endpoint = <&camss_from_csi2rx>;
-			};
 		};
 	};
 };

arch/riscv/boot/dts/starfive/jh7110.dtsi

@@ -1199,34 +1199,6 @@
 			#phy-cells = <0>;
 		};
 
-		camss: isp@19840000 {
-			compatible = "starfive,jh7110-camss";
-			reg = <0x0 0x19840000 0x0 0x10000>,
-			      <0x0 0x19870000 0x0 0x30000>;
-			reg-names = "syscon", "isp";
-			clocks = <&ispcrg JH7110_ISPCLK_DOM4_APB_FUNC>,
-				 <&ispcrg JH7110_ISPCLK_ISPV2_TOP_WRAPPER_C>,
-				 <&ispcrg JH7110_ISPCLK_DVP_INV>,
-				 <&ispcrg JH7110_ISPCLK_VIN_P_AXI_WR>,
-				 <&ispcrg JH7110_ISPCLK_MIPI_RX0_PXL>,
-				 <&syscrg JH7110_SYSCLK_ISP_TOP_CORE>,
-				 <&syscrg JH7110_SYSCLK_ISP_TOP_AXI>;
-			clock-names = "apb_func", "wrapper_clk_c", "dvp_inv",
-				      "axiwr", "mipi_rx0_pxl", "ispcore_2x",
-				      "isp_axi";
-			resets = <&ispcrg JH7110_ISPRST_ISPV2_TOP_WRAPPER_P>,
-				 <&ispcrg JH7110_ISPRST_ISPV2_TOP_WRAPPER_C>,
-				 <&ispcrg JH7110_ISPRST_VIN_P_AXI_RD>,
-				 <&ispcrg JH7110_ISPRST_VIN_P_AXI_WR>,
-				 <&syscrg JH7110_SYSRST_ISP_TOP>,
-				 <&syscrg JH7110_SYSRST_ISP_TOP_AXI>;
-			reset-names = "wrapper_p", "wrapper_c", "axird",
-				      "axiwr", "isp_top_n", "isp_top_axi";
-			power-domains = <&pwrc JH7110_PD_ISP>;
-			interrupts = <92>, <87>, <90>, <88>;
-			status = "disabled";
-		};
-
 		voutcrg: clock-controller@295c0000 {
 			compatible = "starfive,jh7110-voutcrg";
 			reg = <0x0 0x295c0000 0x0 0x10000>;

arch/riscv/include/asm/Kbuild

@@ -14,5 +14,6 @@ generic-y += ticket_spinlock.h
 generic-y += qrwlock.h
 generic-y += qrwlock_types.h
 generic-y += qspinlock.h
+generic-y += ring_buffer.h
 generic-y += user.h
 generic-y += vmlinux.lds.h

arch/riscv/kvm/vcpu_insn.c

@@ -415,7 +415,6 @@ int kvm_riscv_vcpu_mmio_load(struct kvm_vcpu *vcpu, struct kvm_run *run,
 		shift = 8 * (sizeof(ulong) - len);
 	} else if ((insn & INSN_MASK_LBU) == INSN_MATCH_LBU) {
 		len = 1;
-		shift = 8 * (sizeof(ulong) - len);
 #ifdef CONFIG_64BIT
 	} else if ((insn & INSN_MASK_LD) == INSN_MATCH_LD) {
 		len = 8;
@@ -649,22 +648,22 @@ int kvm_riscv_vcpu_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	case 1:
 		data8 = *((u8 *)run->mmio.data);
 		SET_RD(insn, &vcpu->arch.guest_context,
-			(ulong)data8 << shift >> shift);
+			(long)((ulong)data8 << shift) >> shift);
 		break;
 	case 2:
 		data16 = *((u16 *)run->mmio.data);
 		SET_RD(insn, &vcpu->arch.guest_context,
-			(ulong)data16 << shift >> shift);
+			(long)((ulong)data16 << shift) >> shift);
 		break;
 	case 4:
 		data32 = *((u32 *)run->mmio.data);
 		SET_RD(insn, &vcpu->arch.guest_context,
-			(ulong)data32 << shift >> shift);
+			(long)((ulong)data32 << shift) >> shift);
 		break;
 	case 8:
 		data64 = *((u64 *)run->mmio.data);
 		SET_RD(insn, &vcpu->arch.guest_context,
-			(ulong)data64 << shift >> shift);
+			(long)((ulong)data64 << shift) >> shift);
 		break;
 	default:
 		return -EOPNOTSUPP;

arch/riscv/kvm/vcpu_pmu.c

@@ -453,8 +453,10 @@ int kvm_riscv_vcpu_pmu_snapshot_set_shmem(struct kvm_vcpu *vcpu, unsigned long s
 	}
 
 	kvpmu->sdata = kzalloc(snapshot_area_size, GFP_ATOMIC);
-	if (!kvpmu->sdata)
+	if (!kvpmu->sdata) {
-		return -ENOMEM;
+		sbiret = SBI_ERR_FAILURE;
+		goto out;
+	}
 
 	/* No need to check writable slot explicitly as kvm_vcpu_write_guest does it internally */
 	if (kvm_vcpu_write_guest(vcpu, saddr, kvpmu->sdata, snapshot_area_size)) {
@@ -499,8 +501,10 @@ int kvm_riscv_vcpu_pmu_event_info(struct kvm_vcpu *vcpu, unsigned long saddr_low
 	}
 
 	einfo = kzalloc(shmem_size, GFP_KERNEL);
-	if (!einfo)
+	if (!einfo) {
-		return -ENOMEM;
+		ret = SBI_ERR_FAILURE;
+		goto out;
+	}
 
 	ret = kvm_vcpu_read_guest(vcpu, shmem, einfo, shmem_size);
 	if (ret) {

arch/riscv/kvm/vcpu_sbi_sta.c

@@ -46,7 +46,7 @@ void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu)
 	gfn = shmem >> PAGE_SHIFT;
 	hva = kvm_vcpu_gfn_to_hva(vcpu, gfn);
 
-	if (WARN_ON(kvm_is_error_hva(hva))) {
+	if (kvm_is_error_hva(hva)) {
 		vcpu->arch.sta.shmem = INVALID_GPA;
 		return;
 	}

arch/riscv/kvm/vcpu_sbi_v01.c

@@ -55,6 +55,8 @@ static int kvm_sbi_ext_v01_handler(struct kvm_vcpu *vcpu, struct kvm_run *run,
 
 		for_each_set_bit(i, &hmask, BITS_PER_LONG) {
 			rvcpu = kvm_get_vcpu_by_id(vcpu->kvm, i);
+			if (!rvcpu)
+				continue;
 			ret = kvm_riscv_vcpu_set_interrupt(rvcpu, IRQ_VS_SOFT);
 			if (ret < 0)
 				break;

arch/s390/include/asm/Kbuild

@@ -7,3 +7,4 @@ generated-y += unistd_nr.h
 generic-y += asm-offsets.h
 generic-y += mcs_spinlock.h
 generic-y += mmzone.h
+generic-y += ring_buffer.h

arch/s390/kernel/perf_pai.c

@@ -186,6 +186,13 @@ static u64 pai_getctr(unsigned long *page, int nr, unsigned long offset)
 	return page[nr];
 }
 
+static void pai_setctr(unsigned long *page, int nr, unsigned long offset, u64 v)
+{
+	if (offset)
+		nr += offset / sizeof(*page);
+	page[nr] = v;
+}
+
 /* Read the counter values. Return value from location in CMP. For base
  * event xxx_ALL sum up all events. Returns counter value.
  */
@@ -551,6 +558,8 @@ static void paicrypt_del(struct perf_event *event, int flags)
 /* Create raw data and save it in buffer. Calculate the delta for each
  * counter between this invocation and the last invocation.
  * Returns number of bytes copied.
+ * After reading from PAI counter page, save the read value to the old
+ * page to calculate PAI counter deltas.
  * Saves only entries with positive counter difference of the form
  * 2 bytes: Number of counter
  * 8 bytes: Value of counter
@@ -562,16 +571,22 @@ static size_t pai_copy(struct pai_userdata *userdata, unsigned long *page,
 	int i, outidx = 0;
 
 	for (i = 1; i <= pp->num_avail; i++) {
-		u64 val = 0, val_old = 0;
+		u64 val = 0, val_old = 0, val_k = 0, val_old_k = 0;
 
 		if (!exclude_kernel) {
-			val += pai_getctr(page, i, pp->kernel_offset);
+			val_k = pai_getctr(page, i, pp->kernel_offset);
-			val_old += pai_getctr(page_old, i, pp->kernel_offset);
+			val_old_k = pai_getctr(page_old, i, pp->kernel_offset);
+			if (val_k != val_old_k)
+				pai_setctr(page_old, i, pp->kernel_offset, val_k);
 		}
 		if (!exclude_user) {
-			val += pai_getctr(page, i, 0);
+			val = pai_getctr(page, i, 0);
-			val_old += pai_getctr(page_old, i, 0);
+			val_old = pai_getctr(page_old, i, 0);
+			if (val != val_old)
+				pai_setctr(page_old, i, 0, val);
 		}
+		val += val_k;
+		val_old += val_old_k;
 		if (val >= val_old)
 			val -= val_old;
 		else
@@ -602,8 +617,6 @@ static size_t pai_copy(struct pai_userdata *userdata, unsigned long *page,
 static int pai_push_sample(size_t rawsize, struct pai_map *cpump,
 			   struct perf_event *event)
 {
-	int idx = PAI_PMU_IDX(event);
-	struct pai_pmu *pp = &pai_pmu[idx];
 	struct perf_sample_data data;
 	struct perf_raw_record raw;
 	struct pt_regs regs;
@@ -634,8 +647,6 @@ static int pai_push_sample(size_t rawsize, struct pai_map *cpump,
 
 	overflow = perf_event_overflow(event, &data, &regs);
 	perf_event_update_userpage(event);
-	/* Save crypto counter lowcore page after reading event data. */
-	memcpy((void *)PAI_SAVE_AREA(event), cpump->area, pp->area_size);
 	return overflow;
 }
 
@@ -651,7 +662,7 @@ static void pai_have_sample(struct perf_event *event, struct pai_map *cpump)
 	rawsize = pai_copy(cpump->save, cpump->area, pp,
 			   (unsigned long *)PAI_SAVE_AREA(event),
 			   event->attr.exclude_user,
-			   event->attr.exclude_kernel);
+			   !pp->kernel_offset ? true : event->attr.exclude_kernel);
 	if (rawsize)			/* No incremented counters */
 		pai_push_sample(rawsize, cpump, event);
 }

arch/s390/kernel/topology.c

@@ -192,17 +192,21 @@ static void tl_to_masks(struct sysinfo_15_1_x *info)
 	end = (union topology_entry *)((unsigned long)info + info->length);
 	while (tle < end) {
 		switch (tle->nl) {
+		/*
+		 * Adjust drawer_id, book_id, and socked_id so they match the
+		 * numbering scheme of e.g. the hardware management console.
+		 */
 		case 3:
 			drawer = drawer->next;
-			drawer->id = tle->container.id;
+			drawer->id = tle->container.id - 1;
 			break;
 		case 2:
 			book = book->next;
-			book->id = tle->container.id;
+			book->id = tle->container.id - 1;
 			break;
 		case 1:
 			socket = socket->next;
-			socket->id = tle->container.id;
+			socket->id = tle->container.id - 1;
 			break;
 		case 0:
 			add_cpus_to_mask(&tle->cpu, drawer, book, socket);

arch/s390/kvm/dat.c

@@ -267,6 +267,7 @@ static int dat_split_ste(struct kvm_s390_mmu_cache *mc, union pmd *pmdp, gfn_t g
 			/* No need to take locks as the page table is not installed yet. */
 			pgste_init.prefix_notif = old.s.fc1.prefix_notif;
 			pgste_init.vsie_notif = old.s.fc1.vsie_notif;
+			pgste_init.vsie_gmem = old.s.fc1.vsie_notif;
 			pgste_init.pcl = uses_skeys && init.h.i;
 			dat_init_pgstes(pt, pgste_init.val);
 		} else {

arch/s390/kvm/dat.h

@@ -145,7 +145,8 @@ union pgste {
 		unsigned long cmma_d       : 1; /* Dirty flag for CMMA bits */
 		unsigned long prefix_notif : 1; /* Guest prefix invalidation notification */
 		unsigned long vsie_notif   : 1; /* Referenced in a shadow table */
-		unsigned long              : 5;
+		unsigned long vsie_gmem    : 1; /* Contains nested guest memory */
+		unsigned long              : 4;
 		unsigned long              : 8;
 	};
 	struct {

arch/s390/kvm/gaccess.c

@@ -1445,6 +1445,7 @@ static int _do_shadow_pte(struct gmap *sg, gpa_t raddr, union pte *ptep_h, union
 	} else {
 		pgste = _gmap_ptep_xchg(sg->parent, ptep_h, newpte, pgste, f->gfn, false);
 		pgste.vsie_notif = 1;
+		pgste.vsie_gmem = 1;
 	}
 	pgste_set_unlock(ptep_h, pgste);
 	if (rc)

arch/s390/kvm/gmap.c

@@ -125,7 +125,7 @@ struct gmap *gmap_new_child(struct gmap *parent, gfn_t limit)
 
 int gmap_set_limit(struct gmap *gmap, gfn_t limit)
 {
-	struct kvm_s390_mmu_cache *mc;
+	struct kvm_s390_mmu_cache *mc __free(kvm_s390_mmu_cache) = NULL;
 	int rc, type;
 
 	type = gmap_limit_to_type(limit);
@@ -142,7 +142,6 @@ int gmap_set_limit(struct gmap *gmap, gfn_t limit)
 			rc = dat_set_asce_limit(mc, &gmap->asce, type);
 	} while (rc == -ENOMEM);
 
-	kvm_s390_free_mmu_cache(mc);
 	return 0;
 }
 
@@ -822,8 +821,8 @@ int gmap_ucas_translate(struct kvm_s390_mmu_cache *mc, struct gmap *gmap, gpa_t
 
 int gmap_ucas_map(struct gmap *gmap, gfn_t p_gfn, gfn_t c_gfn, unsigned long count)
 {
-	struct kvm_s390_mmu_cache *mc;
+	struct kvm_s390_mmu_cache *mc __free(kvm_s390_mmu_cache) = NULL;
-	int rc;
+	int rc = 0;
 
 	mc = kvm_s390_new_mmu_cache();
 	if (!mc)
@@ -1026,13 +1025,15 @@ int gmap_insert_rmap(struct gmap *sg, gfn_t p_gfn, gfn_t r_gfn, int level)
 int gmap_protect_rmap(struct kvm_s390_mmu_cache *mc, struct gmap *sg, gfn_t p_gfn, gfn_t r_gfn,
 		      kvm_pfn_t pfn, int level, bool wr)
 {
+	unsigned long bitmask;
 	union crste *crstep;
 	union pgste pgste;
 	union pte *ptep;
 	union pte pte;
 	int flags, rc;
 
-	KVM_BUG_ON(!is_shadow(sg), sg->kvm);
+	if (KVM_BUG_ON(!is_shadow(sg) || level <= TABLE_TYPE_PAGE_TABLE, sg->kvm))
+		return -EINVAL;
 	lockdep_assert_held(&sg->parent->children_lock);
 
 	flags = DAT_WALK_SPLIT_ALLOC | (uses_skeys(sg->parent) ? DAT_WALK_USES_SKEYS : 0);
@@ -1041,8 +1042,9 @@ int gmap_protect_rmap(struct kvm_s390_mmu_cache *mc, struct gmap *sg, gfn_t p_gf
 	if (rc)
 		return rc;
 	if (level <= TABLE_TYPE_REGION1) {
+		bitmask = -1UL << (8 + 11 * level);
 		scoped_guard(spinlock, &sg->host_to_rmap_lock)
-			rc = gmap_insert_rmap(sg, p_gfn, r_gfn, level);
+			rc = gmap_insert_rmap(sg, p_gfn, r_gfn & bitmask, level);
 	}
 	if (rc)
 		return rc;
@@ -1143,8 +1145,10 @@ void _gmap_handle_vsie_unshadow_event(struct gmap *parent, gfn_t gfn)
 		}
 		scoped_guard(spinlock, &sg->host_to_rmap_lock)
 			head = radix_tree_delete(&sg->host_to_rmap, gfn);
-		gmap_for_each_rmap_safe(rmap, rnext, head)
+		gmap_for_each_rmap_safe(rmap, rnext, head) {
 			gmap_unshadow_level(sg, rmap->r_gfn, rmap->level);
+			kfree(rmap);
+		}
 	}
 }
 

arch/s390/kvm/gmap.h

@@ -167,6 +167,36 @@ static inline bool gmap_unmap_prefix(struct gmap *gmap, gfn_t gfn, gfn_t end)
 	return _gmap_unmap_prefix(gmap, gfn, end, false);
 }
 
+/**
+ * pte_needs_unshadow() -- Check if the pte operations triggers unshadowing.
+ * @oldpte: the previous value for the guest pte.
+ * @newpte: the new pte being set.
+ * @pgste: the pgste for the pte entry.
+ *
+ * If the pgste.vsie_notif bit is not set, return false: the page is not
+ * involved in vsie and thus should not trigger an unshadow operation.
+ *
+ * If the pgste.vsie_gmem bit is set, this pte represents shadowed guest
+ * memory. The access rights on g3's memory should be synchronized with g1's
+ * and g2's. Therefore unshadowing is triggered if the new and old pte
+ * differ in protection, or if the new pte is invalid.
+ *
+ * If the pgste.vsie_gmem bit is not set, this pte maps the g2 dat tables
+ * for g3. If the entry becomes writable or absent, it becomes impossible to
+ * guarantee that the shadow mapping will match g2's mapping. In that case,
+ * trigger an unshadow event.
+ *
+ * Return: true if an unshadow event should be triggered, otherwise false.
+ */
+static inline bool pte_needs_unshadow(union pte oldpte, union pte newpte, union pgste pgste)
+{
+	if (!pgste.vsie_notif)
+		return false;
+	if (pgste.vsie_gmem)
+		return (oldpte.h.p != newpte.h.p) || newpte.h.i;
+	return !newpte.h.p || !newpte.s.pr;
+}
+
 static inline union pgste _gmap_ptep_xchg(struct gmap *gmap, union pte *ptep, union pte newpte,
 					  union pgste pgste, gfn_t gfn, bool needs_lock)
 {
@@ -180,8 +210,9 @@ static inline union pgste _gmap_ptep_xchg(struct gmap *gmap, union pte *ptep, un
 		pgste.prefix_notif = 0;
 		gmap_unmap_prefix(gmap, gfn, gfn + 1);
 	}
-	if (pgste.vsie_notif && (ptep->h.p != newpte.h.p || newpte.h.i)) {
+	if (pte_needs_unshadow(*ptep, newpte, pgste)) {
 		pgste.vsie_notif = 0;
+		pgste.vsie_gmem = 0;
 		if (needs_lock)
 			gmap_handle_vsie_unshadow_event(gmap, gfn);
 		else
@@ -189,6 +220,7 @@ static inline union pgste _gmap_ptep_xchg(struct gmap *gmap, union pte *ptep, un
 	}
 	if (!ptep->s.d && newpte.s.d && !newpte.s.s)
 		SetPageDirty(pfn_to_page(newpte.h.pfra));
+	pgste.zero = 0;
 	return __dat_ptep_xchg(ptep, pgste, newpte, gfn, gmap->asce, uses_skeys(gmap));
 }
 
@@ -198,6 +230,30 @@ static inline union pgste gmap_ptep_xchg(struct gmap *gmap, union pte *ptep, uni
 	return _gmap_ptep_xchg(gmap, ptep, newpte, pgste, gfn, true);
 }
 
+/**
+ * crste_needs_unshadow() -- Check if the crste operations triggers unshadowing.
+ * @oldcrste: the previous value for the crste.
+ * @newcrste: the new value for the crste.
+ *
+ * If the old crste did not have the vsie_notif bit set, return false: the
+ * page is not involved in vsie and thus should not trigger an unshadow
+ * operation. Conversely, if the bit is set, it can only be g3 memory, since
+ * dat tables are never mapped using large pages.
+ *
+ * Similar to the pgste.vsie_gmem case of pte_needs_unshadow(), if the
+ * protection bit is changing or the new page is invalid, trigger an
+ * unshadow event. Also trigger an unshadow event if the new crste does not
+ * have the vsie_notif bit set.
+ *
+ * Return: true if an unshadow event should be triggered, otherwise false.
+ */
+static inline bool crste_needs_unshadow(union crste oldcrste, union crste newcrste)
+{
+	if (!oldcrste.s.fc1.vsie_notif)
+		return false;
+	return (newcrste.h.p != oldcrste.h.p) || newcrste.h.i || !newcrste.s.fc1.vsie_notif;
+}
+
 static inline bool __must_check _gmap_crstep_xchg_atomic(struct gmap *gmap, union crste *crstep,
 							 union crste oldcrste, union crste newcrste,
 							 gfn_t gfn, bool needs_lock)
@@ -216,8 +272,7 @@ static inline bool __must_check _gmap_crstep_xchg_atomic(struct gmap *gmap, unio
 		newcrste.s.fc1.prefix_notif = 0;
 		gmap_unmap_prefix(gmap, gfn, gfn + align);
 	}
-	if (crste_leaf(oldcrste) && oldcrste.s.fc1.vsie_notif &&
+	if (crste_leaf(oldcrste) && crste_needs_unshadow(oldcrste, newcrste)) {
-	    (newcrste.h.p || newcrste.h.i || !newcrste.s.fc1.vsie_notif)) {
 		newcrste.s.fc1.vsie_notif = 0;
 		if (needs_lock)
 			gmap_handle_vsie_unshadow_event(gmap, gfn);

arch/sh/include/asm/Kbuild

@@ -3,4 +3,5 @@ generated-y += syscall_table.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
 generic-y += parport.h
+generic-y += ring_buffer.h
 generic-y += text-patching.h

arch/sparc/include/asm/Kbuild

@@ -4,4 +4,5 @@ generated-y += syscall_table_64.h
 generic-y += agp.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
+generic-y += ring_buffer.h
 generic-y += text-patching.h

arch/um/include/asm/Kbuild

@@ -17,6 +17,7 @@ generic-y += module.lds.h
 generic-y += parport.h
 generic-y += percpu.h
 generic-y += preempt.h
+generic-y += ring_buffer.h
 generic-y += runtime-const.h
 generic-y += softirq_stack.h
 generic-y += switch_to.h

arch/x86/entry/Makefile

@@ -13,7 +13,7 @@ CFLAGS_REMOVE_syscall_64.o	= $(CC_FLAGS_FTRACE)
 CFLAGS_syscall_32.o		+= -fno-stack-protector
 CFLAGS_syscall_64.o		+= -fno-stack-protector
 
-obj-y				:= entry.o entry_$(BITS).o syscall_$(BITS).o
+obj-y				:= entry.o entry_$(BITS).o syscall_$(BITS).o common.o
 
 obj-y				+= vdso/
 obj-y				+= vsyscall/

arch/x86/entry/common.c

@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <linux/entry-common.h>
+#include <linux/kvm_types.h>
+#include <linux/hrtimer_rearm.h>
+#include <asm/fred.h>
+#include <asm/desc.h>
+
+#if IS_ENABLED(CONFIG_KVM_INTEL)
+/*
+ * On VMX, NMIs and IRQs (as configured by KVM) are acknowledged by hardware as
+ * part of the VM-Exit, i.e. the event itself is consumed as part the VM-Exit.
+ * x86_entry_from_kvm() is invoked by KVM to effectively forward NMIs and IRQs
+ * to the kernel for servicing.  On SVM, a.k.a. AMD, the NMI/IRQ VM-Exit is
+ * purely a signal that an NMI/IRQ is pending, i.e. the event that triggered
+ * the VM-Exit is held pending until it's unblocked in the host.
+ */
+noinstr void x86_entry_from_kvm(unsigned int event_type, unsigned int vector)
+{
+	if (event_type == EVENT_TYPE_EXTINT) {
+#ifdef CONFIG_X86_64
+		/*
+		 * Use FRED dispatch, even when running IDT. The dispatch
+		 * tables are kept in sync between FRED and IDT, and the FRED
+		 * dispatch works well with CFI.
+		 */
+		fred_entry_from_kvm(event_type, vector);
+#else
+		idt_entry_from_kvm(vector);
+#endif
+		/*
+		 * Strictly speaking, only the NMI path requires noinstr.
+		 */
+		instrumentation_begin();
+		/*
+		 * KVM/VMX will dispatch from IRQ-disabled but for a context
+		 * that will have IRQs-enabled. This confuses the entry code
+		 * and it will not have reprogrammed the timer. Do so now.
+		 */
+		hrtimer_rearm_deferred();
+		instrumentation_end();
+
+		return;
+	}
+
+	WARN_ON_ONCE(event_type != EVENT_TYPE_NMI);
+
+#ifdef CONFIG_X86_64
+	if (cpu_feature_enabled(X86_FEATURE_FRED))
+		return fred_entry_from_kvm(event_type, vector);
+#endif
+
+	/*
+	 * Notably, we must use IDT dispatch for NMI when running in IDT mode.
+	 * The FRED NMI context is significantly different and will not work
+	 * right (specifically FRED fixed the NMI recursion issue).
+	 */
+	idt_entry_from_kvm(vector);
+}
+EXPORT_SYMBOL_FOR_KVM(x86_entry_from_kvm);
+#endif

arch/x86/entry/entry.S

@@ -75,3 +75,49 @@ THUNK warn_thunk_thunk, __warn_thunk
 #if defined(CONFIG_STACKPROTECTOR) && defined(CONFIG_SMP)
 EXPORT_SYMBOL(__ref_stack_chk_guard);
 #endif
+
+#if IS_ENABLED(CONFIG_KVM_INTEL)
+.macro IDT_DO_EVENT_IRQOFF call_insn call_target
+	/*
+	 * Unconditionally create a stack frame, getting the correct RSP on the
+	 * stack (for x86-64) would take two instructions anyways, and RBP can
+	 * be used to restore RSP to make objtool happy (see below).
+	 */
+	push %_ASM_BP
+	mov %_ASM_SP, %_ASM_BP
+
+#ifdef CONFIG_X86_64
+	/*
+	 * Align RSP to a 16-byte boundary (to emulate CPU behavior) before
+	 * creating the synthetic interrupt stack frame for the IRQ/NMI.
+	 */
+	and  $-16, %rsp
+	push $__KERNEL_DS
+	push %rbp
+#endif
+	pushf
+	push $__KERNEL_CS
+	\call_insn \call_target
+
+	/*
+	 * "Restore" RSP from RBP, even though IRET has already unwound RSP to
+	 * the correct value.  objtool doesn't know the callee will IRET and,
+	 * without the explicit restore, thinks the stack is getting walloped.
+	 * Using an unwind hint is problematic due to x86-64's dynamic alignment.
+	 */
+	leave
+	RET
+.endm
+
+.pushsection .text, "ax"
+SYM_FUNC_START(idt_do_interrupt_irqoff)
+	IDT_DO_EVENT_IRQOFF CALL_NOSPEC _ASM_ARG1
+SYM_FUNC_END(idt_do_interrupt_irqoff)
+.popsection
+
+.pushsection .noinstr.text, "ax"
+SYM_FUNC_START(idt_do_nmi_irqoff)
+	IDT_DO_EVENT_IRQOFF call asm_exc_nmi_kvm_vmx
+SYM_FUNC_END(idt_do_nmi_irqoff)
+.popsection
+#endif

arch/x86/entry/entry_64_fred.S

@@ -147,5 +147,4 @@ SYM_FUNC_START(asm_fred_entry_from_kvm)
 	RET
 
 SYM_FUNC_END(asm_fred_entry_from_kvm)
-EXPORT_SYMBOL_FOR_KVM(asm_fred_entry_from_kvm);
 #endif

arch/x86/entry/vdso/vma.c

@@ -178,7 +178,7 @@ static int map_vdso(const struct vdso_image *image, unsigned long addr)
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		do_munmap(mm, text_start, image->size, NULL);
-		do_munmap(mm, addr, image->size, NULL);
+		do_munmap(mm, addr, VDSO_NR_PAGES * PAGE_SIZE, NULL);
 		goto up_fail;
 	}
 

arch/x86/include/asm/Kbuild

@@ -14,3 +14,4 @@ generic-y += early_ioremap.h
 generic-y += fprobe.h
 generic-y += mcs_spinlock.h
 generic-y += mmzone.h
+generic-y += ring_buffer.h

arch/x86/include/asm/desc.h

@@ -438,6 +438,10 @@ extern void idt_setup_traps(void);
 extern void idt_setup_apic_and_irq_gates(void);
 extern bool idt_is_f00f_address(unsigned long address);
 
+extern void idt_do_interrupt_irqoff(unsigned long address);
+extern void idt_do_nmi_irqoff(void);
+extern void idt_entry_from_kvm(unsigned int vector);
+
 #ifdef CONFIG_X86_64
 extern void idt_setup_early_pf(void);
 #else

arch/x86/include/asm/desc_defs.h

@@ -145,7 +145,7 @@ struct gate_struct {
 typedef struct gate_struct gate_desc;
 
 #ifndef _SETUP
-static inline unsigned long gate_offset(const gate_desc *g)
+static __always_inline unsigned long gate_offset(const gate_desc *g)
 {
 #ifdef CONFIG_X86_64
 	return g->offset_low | ((unsigned long)g->offset_middle << 16) |

arch/x86/include/asm/entry-common.h

@@ -97,4 +97,6 @@ static __always_inline void arch_exit_to_user_mode(void)
 }
 #define arch_exit_to_user_mode arch_exit_to_user_mode
 
+extern void x86_entry_from_kvm(unsigned int entry_type, unsigned int vector);
+
 #endif

arch/x86/include/asm/fred.h

@@ -110,7 +110,6 @@ static __always_inline unsigned long fred_event_data(struct pt_regs *regs) { ret
 static inline void cpu_init_fred_exceptions(void) { }
 static inline void cpu_init_fred_rsps(void) { }
 static inline void fred_complete_exception_setup(void) { }
-static inline void fred_entry_from_kvm(unsigned int type, unsigned int vector) { }
 static inline void fred_sync_rsp0(unsigned long rsp0) { }
 static inline void fred_update_rsp0(void) { }
 #endif /* CONFIG_X86_FRED */

arch/x86/kernel/cpu/cpuid-deps.c

@@ -92,6 +92,7 @@ static const struct cpuid_dep cpuid_deps[] = {
 	{ X86_FEATURE_FRED,			X86_FEATURE_LKGS      },
 	{ X86_FEATURE_SPEC_CTRL_SSBD,		X86_FEATURE_SPEC_CTRL },
 	{ X86_FEATURE_LASS,			X86_FEATURE_SMAP      },
+	{ X86_FEATURE_INVLPGB,			X86_FEATURE_PCID      },
 	{}
 };
 

arch/x86/kernel/idt.c

@@ -268,6 +268,21 @@ void __init idt_setup_early_pf(void)
 }
 #endif
 
+#if IS_ENABLED(CONFIG_KVM_INTEL)
+noinstr void idt_entry_from_kvm(unsigned int vector)
+{
+	if (vector == NMI_VECTOR)
+		return idt_do_nmi_irqoff();
+
+	/*
+	 * Only the NMI path requires noinstr.
+	 */
+	instrumentation_begin();
+	idt_do_interrupt_irqoff(gate_offset(idt_table + vector));
+	instrumentation_end();
+}
+#endif
+
 static void __init idt_map_in_cea(void)
 {
 	/*

arch/x86/kernel/nmi.c

@@ -614,7 +614,6 @@ DEFINE_IDTENTRY_RAW(exc_nmi_kvm_vmx)
 {
 	exc_nmi(regs);
 }
-EXPORT_SYMBOL_FOR_KVM(asm_exc_nmi_kvm_vmx);
 #endif
 
 #ifdef CONFIG_NMI_CHECK_CPU

arch/x86/kvm/svm/avic.c

@@ -1300,12 +1300,14 @@ bool __init avic_hardware_setup(void)
 	}
 
 	/*
-	 * Disable IPI virtualization for AMD Family 17h CPUs (Zen1 and Zen2)
+	 * Disable IPI virtualization for AMD Family 17h (Zen1 and Zen2) and
-	 * due to erratum 1235, which results in missed VM-Exits on the sender
+	 * Hygon Family 18h (derived from AMD Zen1) CPUs due to erratum 1235,
-	 * and thus missed wake events for blocking vCPUs due to the CPU
+	 * which results in missed VM-Exits on the sender and thus missed wake
-	 * failing to see a software update to clear IsRunning.
+	 * events for blocking vCPUs due to the CPU failing to see a software
+	 * update to clear IsRunning.
 	 */
-	enable_ipiv = enable_ipiv && boot_cpu_data.x86 != 0x17;
+	if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18)
+		enable_ipiv = false;
 
 	amd_iommu_register_ga_log_notifier(&avic_ga_log_notifier);
 

arch/x86/kvm/vmx/vmenter.S

@@ -31,38 +31,6 @@
 #define VCPU_R15	__VCPU_REGS_R15 * WORD_SIZE
 #endif
 
-.macro VMX_DO_EVENT_IRQOFF call_insn call_target
-	/*
-	 * Unconditionally create a stack frame, getting the correct RSP on the
-	 * stack (for x86-64) would take two instructions anyways, and RBP can
-	 * be used to restore RSP to make objtool happy (see below).
-	 */
-	push %_ASM_BP
-	mov %_ASM_SP, %_ASM_BP
-
-#ifdef CONFIG_X86_64
-	/*
-	 * Align RSP to a 16-byte boundary (to emulate CPU behavior) before
-	 * creating the synthetic interrupt stack frame for the IRQ/NMI.
-	 */
-	and  $-16, %rsp
-	push $__KERNEL_DS
-	push %rbp
-#endif
-	pushf
-	push $__KERNEL_CS
-	\call_insn \call_target
-
-	/*
-	 * "Restore" RSP from RBP, even though IRET has already unwound RSP to
-	 * the correct value.  objtool doesn't know the callee will IRET and,
-	 * without the explicit restore, thinks the stack is getting walloped.
-	 * Using an unwind hint is problematic due to x86-64's dynamic alignment.
-	 */
-	leave
-	RET
-.endm
-
 .section .noinstr.text, "ax"
 
 /**
@@ -320,10 +288,6 @@ SYM_INNER_LABEL_ALIGN(vmx_vmexit, SYM_L_GLOBAL)
 
 SYM_FUNC_END(__vmx_vcpu_run)
 
-SYM_FUNC_START(vmx_do_nmi_irqoff)
-	VMX_DO_EVENT_IRQOFF call asm_exc_nmi_kvm_vmx
-SYM_FUNC_END(vmx_do_nmi_irqoff)
-
 #ifndef CONFIG_CC_HAS_ASM_GOTO_OUTPUT
 
 /**
@@ -375,13 +339,3 @@ SYM_FUNC_START(vmread_error_trampoline)
 	RET
 SYM_FUNC_END(vmread_error_trampoline)
 #endif
-
-.section .text, "ax"
-
-#ifndef CONFIG_X86_FRED
-
-SYM_FUNC_START(vmx_do_interrupt_irqoff)
-	VMX_DO_EVENT_IRQOFF CALL_NOSPEC _ASM_ARG1
-SYM_FUNC_END(vmx_do_interrupt_irqoff)
-
-#endif

arch/x86/kvm/vmx/vmx.c

@@ -7117,9 +7117,6 @@ void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
 	vmcs_write64(EOI_EXIT_BITMAP3, eoi_exit_bitmap[3]);
 }
 
-void vmx_do_interrupt_irqoff(unsigned long entry);
-void vmx_do_nmi_irqoff(void);
-
 static void handle_nm_fault_irqoff(struct kvm_vcpu *vcpu)
 {
 	/*
@@ -7161,17 +7158,8 @@ static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu,
 	    "unexpected VM-Exit interrupt info: 0x%x", intr_info))
 		return;
 
-	/*
-	 * Invoke the kernel's IRQ handler for the vector.  Use the FRED path
-	 * when it's available even if FRED isn't fully enabled, e.g. even if
-	 * FRED isn't supported in hardware, in order to avoid the indirect
-	 * CALL in the non-FRED path.
-	 */
 	kvm_before_interrupt(vcpu, KVM_HANDLING_IRQ);
-	if (IS_ENABLED(CONFIG_X86_FRED))
+	x86_entry_from_kvm(EVENT_TYPE_EXTINT, vector);
-		fred_entry_from_kvm(EVENT_TYPE_EXTINT, vector);
-	else
-		vmx_do_interrupt_irqoff(gate_offset((gate_desc *)host_idt_base + vector));
 	kvm_after_interrupt(vcpu);
 
 	vcpu->arch.at_instruction_boundary = true;
@@ -7481,10 +7469,7 @@ noinstr void vmx_handle_nmi(struct kvm_vcpu *vcpu)
 		return;
 
 	kvm_before_interrupt(vcpu, KVM_HANDLING_NMI);
-	if (cpu_feature_enabled(X86_FEATURE_FRED))
+	x86_entry_from_kvm(EVENT_TYPE_NMI, NMI_VECTOR);
-		fred_entry_from_kvm(EVENT_TYPE_NMI, NMI_VECTOR);
-	else
-		vmx_do_nmi_irqoff();
 	kvm_after_interrupt(vcpu);
 }
 

arch/x86/kvm/x86.c

@@ -4876,7 +4876,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 		r = tdp_enabled;
 		break;
 	case KVM_CAP_X86_APIC_BUS_CYCLES_NS:
-		r = APIC_BUS_CYCLE_NS_DEFAULT;
+		r = kvm ? kvm->arch.apic_bus_cycle_ns : APIC_BUS_CYCLE_NS_DEFAULT;
 		break;
 	case KVM_CAP_EXIT_HYPERCALL:
 		r = KVM_EXIT_HYPERCALL_VALID_MASK;

arch/xtensa/include/asm/Kbuild

@@ -6,5 +6,6 @@ generic-y += mcs_spinlock.h
 generic-y += parport.h
 generic-y += qrwlock.h
 generic-y += qspinlock.h
+generic-y += ring_buffer.h
 generic-y += user.h
 generic-y += text-patching.h

block/bio-integrity-fs.c

@@ -55,6 +55,10 @@ int fs_bio_integrity_verify(struct bio *bio, sector_t sector, unsigned int size)
 {
 	struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk);
 	struct bio_integrity_payload *bip = bio_integrity(bio);
+	struct bvec_iter data_iter = {
+		.bi_sector	= sector,
+		.bi_size	= size,
+	};
 
 	/*
 	 * Reinitialize bip->bip_iter.
@@ -65,7 +69,7 @@ int fs_bio_integrity_verify(struct bio *bio, sector_t sector, unsigned int size)
 	memset(&bip->bip_iter, 0, sizeof(bip->bip_iter));
 	bip->bip_iter.bi_sector = sector;
 	bip->bip_iter.bi_size = bio_integrity_bytes(bi, size >> SECTOR_SHIFT);
-	return blk_status_to_errno(bio_integrity_verify(bio, &bip->bip_iter));
+	return blk_status_to_errno(bio_integrity_verify(bio, &data_iter));
 }
 
 static int __init fs_bio_integrity_init(void)