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Marc Zyngier 46bd74ef07 Merge branch kvm-arm64/el2-feature-control into kvmarm-master/next
* kvm-arm64/el2-feature-control: (23 commits)
  : .
  : General rework of EL2 features that can be disabled to satisfy
  : the requirement of migration between heterogeneous hosts:
  :
  : - Handle effective RES0 behaviour of undefined registers, making sure
  :   that disabling a feature affects full registeres, and not just
  :   individual control bits. (20250918151402.1665315-1-maz@kernel.org)
  :
  : - Allow ID_AA64MMFR1_EL1.{TWED,HCX} to be disabled from userspace.
  :   (20250911114621.3724469-1-yangjinqian1@huawei.com)
  :
  : - Turn the NV feature management into a deny-list, and expose
  :   missing features to EL2 guests.
  :   (20250912212258.407350-1-oliver.upton@linux.dev)
  : .
  KVM: arm64: nv: Expose up to FEAT_Debugv8p8 to NV-enabled VMs
  KVM: arm64: nv: Advertise FEAT_TIDCP1 to NV-enabled VMs
  KVM: arm64: nv: Advertise FEAT_SpecSEI to NV-enabled VMs
  KVM: arm64: nv: Expose FEAT_TWED to NV-enabled VMs
  KVM: arm64: nv: Exclude guest's TWED configuration when TWE isn't set
  KVM: arm64: nv: Expose FEAT_AFP to NV-enabled VMs
  KVM: arm64: nv: Expose FEAT_ECBHB to NV-enabled VMs
  KVM: arm64: nv: Expose FEAT_RASv1p1 via RAS_frac
  KVM: arm64: nv: Expose FEAT_DF2 to NV-enabled VMs
  KVM: arm64: nv: Don't erroneously claim FEAT_DoubleLock for NV VMs
  KVM: arm64: nv: Convert masks to denylists in limit_nv_id_reg()
  KVM: arm64: selftests: Test writes to ID_AA64MMFR1_EL1.{HCX, TWED}
  KVM: arm64: Make ID_AA64MMFR1_EL1.{HCX, TWED} writable from userspace
  KVM: arm64: Convert MDCR_EL2 RES0 handling to compute_reg_res0_bits()
  KVM: arm64: Convert SCTLR_EL1 RES0 handling to compute_reg_res0_bits()
  KVM: arm64: Enforce absence of FEAT_TCR2 on TCR2_EL2
  KVM: arm64: Enforce absence of FEAT_SCTLR2 on SCTLR2_EL{1,2}
  KVM: arm64: Convert HCR_EL2 RES0 handling to compute_reg_res0_bits()
  KVM: arm64: Enforce absence of FEAT_HCX on HCRX_EL2
  KVM: arm64: Enforce absence of FEAT_FGT2 on FGT2 registers
  ...

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-09-20 12:26:18 +01:00
Documentation - Convert the SSB mitigation to the attack vector controls which got forgotten 2025-08-31 09:20:17 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
arch Merge branch kvm-arm64/el2-feature-control into kvmarm-master/next 2025-09-20 12:26:18 +01:00
block block: validate QoS before calling __rq_qos_done_bio() 2025-08-26 10:34:08 -06:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
drivers irqchip/gic-v5: Drop has_gcie_v3_compat from gic_kvm_info 2025-09-17 17:41:02 +01:00
fs EFI fixes for v6.17 #1 2025-08-29 09:15:46 -07:00
include Merge branch kvm-arm64/gic-v5-nv into kvmarm-master/next 2025-09-20 12:26:05 +01:00
init hardening: Require clang 20.1.0 for __counted_by 2025-08-29 12:04:53 -07:00
io_uring io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths 2025-08-28 05:48:34 -06:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel - Fix a stall on the CPU offline path due to mis-counting a deadline server 2025-08-31 09:13:00 -07:00
lib hardening fixes for v6.17-rc4 2025-08-31 08:56:45 -07:00
mm memblock fixes for v6.17-rc4 2025-08-28 15:46:06 -07:00
net net: ipv4: fix regression in local-broadcast routes 2025-08-28 10:52:30 +02:00
rust Driver core fixes for 6.16-rc3 2025-08-23 09:04:32 -04:00
samples Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
scripts Kbuild updates for v6.17 2025-08-06 07:32:52 +03:00
security + Features 2025-08-04 08:17:28 -07:00
sound ALSA: usb-audio: Use correct sub-type for UAC3 feature unit validation 2025-08-21 17:10:14 +02:00
tools Merge branch kvm-arm64/el2-feature-control into kvmarm-master/next 2025-09-20 12:26:18 +01:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt KVM: Avoid synchronize_srcu() in kvm_io_bus_register_dev() 2025-09-15 10:55:23 +01:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about `clippy::disallowed_macros` configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap .mailmap: add entry for Easwar Hariharan 2025-08-19 16:35:55 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS gpio fixes for v6.17-rc4 2025-08-31 08:49:55 -07:00
Makefile Linux 6.17-rc4 2025-08-31 15:33:07 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.