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Junaid Shahid 1aa9b9572b kvm: x86: mmu: Recovery of shattered NX large pages 
The page table pages corresponding to broken down large pages are zapped in
FIFO order, so that the large page can potentially be recovered, if it is
not longer being used for execution.  This removes the performance penalty
for walking deeper EPT page tables.

By default, one large page will last about one hour once the guest
reaches a steady state.

Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2019-11-04 20:26:00 +01:00
arch
kvm: x86: mmu: Recovery of shattered NX large pages
2019-11-04 20:26:00 +01:00
block
iocost: don't nest spin_lock_irq in ioc_weight_write()
2019-10-31 11:40:57 -06:00
certs
PKCS#7: Refactor verify_pkcs7_signature()
2019-08-05 18:40:18 -04:00
crypto
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
Documentation
kvm: x86: mmu: Recovery of shattered NX large pages
2019-11-04 20:26:00 +01:00
drivers
x86/bugs: Add ITLB_MULTIHIT bug infrastructure
2019-11-04 12:22:01 +01:00
fs
Merge tag '5.4-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6
2019-11-02 14:34:00 -07:00
include
kvm: Add helper function for creating VM worker threads
2019-11-04 12:22:02 +01:00
init
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
ipc
ipc/sem.c: convert to use built-in RCU list checking
2019-09-25 17:51:41 -07:00
kernel
cpu/speculation: Uninline and export CPU mitigations helpers
2019-11-04 12:22:02 +01:00
lib
lib/vdso: Make clock_getres() POSIX compliant again
2019-10-23 14:48:23 +02:00
LICENSES
LICENSES: Rename other to deprecated
2019-05-03 06:34:32 -06:00
mm
mm/thp: allow dropping THP from page cache
2019-10-19 06:32:33 -04:00
net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-11-01 17:48:11 -07:00
samples
samples/bpf: Add a workaround for asm_inline
2019-10-03 17:37:11 +02:00
scripts
Merge tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2019-10-25 16:11:55 -04:00
security
efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN
2019-10-31 09:40:21 +01:00
sound
ALSA: timer: Fix mutex deadlock at releasing card
2019-10-30 22:54:56 +01:00
tools
Merge tag 'usb-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2019-11-03 08:25:25 -08:00
usr
kbuild: update compile-test header list for v5.4-rc2
2019-10-05 15:29:49 +09:00
virt
kvm: x86: mmu: Recovery of shattered NX large pages
2019-11-04 20:26:00 +01:00
.clang-format
clang-format: Update with the latest for_each macro list
2019-08-31 10:00:51 +02:00
.cocciconfig
scripts: add Linux .cocciconfig for coccinelle
2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: set git diff driver for C source code files
2016-10-07 18:46:30 -07:00
.gitignore
Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2019-09-22 10:34:46 -07:00
.mailmap
Merge tag 'mips_fixes_5.4_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
2019-10-26 19:43:12 -04:00
COPYING
COPYING: use the new text with points to the license files
2018-03-23 12:41:45 -06:00
CREDITS
MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer
2019-10-10 08:12:51 -07:00
Kbuild
kbuild: do not descend to ./Kbuild when cleaning
2019-08-21 21:03:58 +09:00
Kconfig
docs: kbuild: convert docs to ReST and rename to *.rst
2019-06-14 14:21:21 -06:00
MAINTAINERS
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-11-01 17:48:11 -07:00
Makefile
Linux 5.4-rc6
2019-11-03 14:07:26 -08:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -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 Restructured Text 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.
Description
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