Keqian Zhu c862626e19 KVM: arm64: Support enabling dirty log gradually in small chunks ... There is already support of enabling dirty log gradually in small chunks for x86 in commit 3c9bd4006b ("KVM: x86: enable dirty log gradually in small chunks"). This adds support for arm64. x86 still writes protect all huge pages when DIRTY_LOG_INITIALLY_ALL_SET is enabled. However, for arm64, both huge pages and normal pages can be write protected gradually by userspace. Under the Huawei Kunpeng 920 2.6GHz platform, I did some tests on 128G Linux VMs with different page size. The memory pressure is 127G in each case. The time taken of memory_global_dirty_log_start in QEMU is listed below: Page Size Before After Optimization 4K 650ms 1.8ms 2M 4ms 1.8ms 1G 2ms 1.8ms Besides the time reduction, the biggest improvement is that we will minimize the performance side effect (because of dissolving huge pages and marking memslots dirty) on guest after enabling dirty log. Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20200413122023.52583-1-zhukeqian1@huawei.com		2020-05-16 15:05:02 +01:00
..
ABI	change email address for Pali Rohár	2020-04-10 15:36:22 -07:00
PCI	pci-v5.7-changes	2020-04-03 14:25:02 -07:00
RCU	doc: Add rcutorture scripting to torture.txt	2020-02-27 07:03:14 -08:00
accounting	doc: cgroup: improve formatting of references	2020-03-02 12:57:03 -07:00
admin-guide	- Document DM integrity allow_discard feature that was added during	2020-04-30 16:45:08 -07:00
arm	docs: arm: tcm: Fix a few typos	2020-02-19 02:42:21 -07:00
arm64	Documentation: arm64: fix amu.rst doc warnings	2020-04-23 17:05:22 +01:00
block	block: Document genhd capability flags	2020-03-12 07:47:22 -06:00
bpf	bpf: lsm: Add Documentation	2020-03-30 01:35:12 +02:00
cdrom	…
core-api	docs: timekeeping: Use correct prototype for deprecated functions	2020-04-15 14:48:26 -06:00
cpu-freq	docs: cpu-freq: convert cpufreq-stats.txt to ReST	2020-03-06 00:01:02 +01:00
crypto	crypto: algapi - make unregistration functions return void	2019-12-20 14:58:35 +08:00
dev-tools	linux-kselftest-kunit-5.7-rc1	2020-04-01 16:11:40 -07:00
devicetree	dmaengine fixes for v5.7-rc4	2020-05-02 11:16:14 -07:00
doc-guide	Documentation: build warnings related to missing blank lines after explicit markups has been fixed	2020-02-05 10:30:03 -07:00
driver-api	A handful of late-arriving fixes for the documentation tree.	2020-04-10 17:53:43 -07:00
fault-injection	…
fb	fbdev: fbmem: allow overriding the number of bootup logos	2020-01-03 14:27:40 +01:00
features	documentation: vm: Advertise support for pte_special in riscv	2020-02-19 02:41:01 -07:00
filesystems	debugfs: remove return value of debugfs_create_u32()	2020-04-17 17:08:50 +02:00
firmware-guide	Documentation: firmware-guide: ACPI: fix table alignment in namespace.rst	2020-04-08 14:27:48 +02:00
firmware_class	…
fpga	Documentation: fpga: dfl: add descriptions for thermal/power management interfaces	2019-10-16 19:18:26 -07:00
gpu	UAPI Changes:	2020-03-19 10:40:27 +10:00
hid	…
hwmon	hwmon: (pmbus/isl68137) Fix up chip IDs	2020-04-12 15:12:51 -07:00
i2c	i2c: convert SMBus alert setup function to return an ERRPTR	2020-03-10 12:19:52 +01:00
ia64	…
ide	…
iio	…
infiniband	Documentation/infiniband: update name of some functions	2019-09-13 16:55:55 -03:00
input	…
isdn	isdn: capi: dead code removal	2019-12-11 09:12:38 +01:00
kbuild	Documentation: kbuild: fix the section title format	2020-04-23 10:53:19 +09:00
kernel-hacking	docs: locking: Drop :c:func: throughout	2020-03-20 17:16:24 -06:00
leds	…
livepatch	livepatch: Documentation of the new API for tracking system state changes	2019-11-01 13:08:24 +01:00
locking	Documentation/locking/locktypes: Minor copy editor fixes	2020-03-28 12:47:34 +01:00
m68k	…
maintainer	Add a maintainer entry profile for documentation	2020-01-24 09:48:39 -07:00
media	media updates for v5.7-rc1	2020-03-30 13:42:05 -07:00
mhi	docs: Add documentation for MHI bus	2020-03-19 07:41:04 +01:00
mips	docs: mips: remove no longer needed au1xxx_ide.rst documentation	2020-03-24 15:53:48 +01:00
misc-devices	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2020-04-01 14:47:40 -07:00
netlabel	…
networking	ice: cleanup language in ice.rst for fw.app	2020-05-01 15:30:24 -07:00
nios2	…
nvdimm	docs: nvdimm: use ReST notation for subsection	2020-01-24 09:54:42 -07:00
openrisc	openrisc: configs: Cleanup CONFIG_CROSS_COMPILE	2020-01-31 22:10:58 +09:00
parisc	…
pcmcia	…
power	Merge branches 'pm-core', 'pm-sleep', 'pm-acpi' and 'pm-domains'	2020-03-30 14:46:58 +02:00
powerpc	powerpc updates for 5.7	2020-04-05 11:12:59 -07:00
process	Documentation/changes: Raise minimum supported binutils version to 2.23	2020-04-09 00:02:00 +09:00
riscv	It has been a relatively quiet cycle for documentation, but there's still a	2020-01-29 15:27:31 -08:00
s390	…
scheduler	Documentation/scheduler: fix links in sched-stats	2019-10-29 04:35:41 -06:00
scsi	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
security	docs: prevent warnings due to autosectionlabel	2020-03-20 17:01:29 -06:00
sh	…
sound	ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups	2020-03-31 10:54:06 +02:00
sparc	…
sphinx	docs: Fix empty parallelism argument	2020-02-25 03:11:04 -07:00
sphinx-static	doc-rst: Reduce CSS padding around Field	2019-10-02 10:03:06 -06:00
spi	…
target	docs: prevent warnings due to autosectionlabel	2020-03-20 17:01:29 -06:00
timers	…
trace	New tracing features:	2020-04-05 10:36:18 -07:00
translations	media updates for v5.7-rc1	2020-03-30 13:42:05 -07:00
usb	usb: gadget: add raw-gadget interface	2020-03-15 11:34:48 +02:00
userspace-api	docs: userspace: ioctl-number: remove mc146818rtc conflict	2020-02-13 11:42:02 -07:00
virt	KVM: arm64: Support enabling dirty log gradually in small chunks	2020-05-16 15:05:02 +01:00
vm	mm/zswap: allow setting default status, compressor and allocator in Kconfig	2020-04-07 10:43:41 -07:00
w1	docs: w1: Fix a typo in omap-hdq.rst	2019-12-30 11:58:02 -07:00
watchdog	linux-watchdog 5.4-rc1 tag	2019-09-27 11:17:38 -07:00
x86	Documentation/x86, efi/x86: Clarify EFI handover protocol and its requirements	2020-04-14 08:32:15 +02:00
xtensa	…
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
COPYING-logo	…
Changes	…
CodingStyle	…
DMA-API-HOWTO.txt	…
DMA-API.txt	…
DMA-ISA-LPC.txt	…
DMA-attributes.txt	dma-mapping: remove the DMA_ATTR_WRITE_BARRIER flag	2019-11-14 12:01:54 -04:00
IPMI.txt	…
IRQ-affinity.txt	…
IRQ-domain.txt	…
IRQ.txt	…
Kconfig	…
Makefile	Kbuild updates for v5.7	2020-03-31 16:03:39 -07:00
SubmittingPatches	…
asm-annotations.rst	Documentation: Call out example SYM_FUNC_* usage as x86-specific	2020-01-16 12:53:16 -07:00
atomic_bitops.txt	…
atomic_t.txt	…
bus-virt-phys-mapping.txt	…
conf.py	docs: conf.py: avoid thousands of duplicate label warning on Sphinx	2020-03-20 17:01:34 -06:00
crc32.txt	…
debugging-via-ohci1394.txt	…
digsig.txt	…
docutils.conf	…
dontdiff	modpost: dump missing namespaces into a single modules.nsdeps file	2019-11-11 20:10:01 +09:00
futex-requeue-pi.txt	…
hwspinlock.txt	…
index.rst	Char/Misc driver patches for 5.7-rc1	2020-04-03 13:22:40 -07:00
irqflags-tracing.txt	…
kprobes.txt	…
kref.txt	docs: kref: Clarify the use of two kref_put() in example code	2020-02-25 03:39:10 -07:00
logo.gif	…
lzo.txt	…
mailbox.txt	…
memory-barriers.txt	Documentation/memory-barriers: Fix typos	2020-02-27 07:03:14 -08:00
nommu-mmap.txt	…
percpu-rw-semaphore.txt	…
pi-futex.txt	…
preempt-locking.txt	…
rbtree.txt	…
remoteproc.txt	remoteproc: Add elf64 support in elf loader	2020-03-25 22:29:40 -07:00
robust-futex-ABI.txt	threads: Update PID limit comment according to futex UAPI change	2020-03-21 17:48:13 +01:00
robust-futexes.txt	…
rpmsg.txt	…
speculation.txt	…
static-keys.txt	…
tee.txt	Documentation: tee: add AMD-TEE driver details	2020-01-04 13:49:51 +08:00
this_cpu_ops.txt	…
unaligned-memory-access.txt	…
xz.txt	…