Junaid Shahid
c6e94acbf6
kvm: x86: mmu: Recovery of shattered NX large pages ...
commit 1aa9b9572b10529c2e64e2b8f44025d86e124308 upstream.
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>
[bwh: Backported to 4.9:
- Update another error path in kvm_create_vm() to use out_err_no_mmu_notifier
- Adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-16 10:29:57 +01:00
alpha: Fix Eiger NR_IRQS to 128
2019-02-20 10:18:32 +01:00
ARC: export "abort" for modules
2019-09-21 07:14:23 +02:00
ARM: davinci: dm365: Fix McBSP dma_slave_map entry
2019-11-10 11:23:18 +01:00
arm64: fix unreachable code issue with cmpxchg
2019-10-07 18:53:14 +02:00
pinctrl: adi2: Fix Kconfig build problem
2017-12-20 10:07:32 +01:00
c6x/ptrace: Remove useless PTRACE_SETREGSET implementation
2017-03-31 10:31:46 +02:00
cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected
2017-01-12 11:39:24 +01:00
futex: Remove duplicated code and fix undefined behaviour
2018-05-19 10:27:00 +02:00
h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
2019-04-05 22:29:05 +02:00
hexagon: modify ffs() and fls() to return int
2018-10-10 08:53:21 +02:00
ia64:unwind: fix double free for mod->arch.init_unw_table
2019-10-05 12:30:20 +02:00
bug.h: work around GCC PR82365 in BUG()
2019-07-10 09:55:44 +02:00
metag/uaccess: Check access_ok in strncpy_from_user
2017-05-25 15:44:46 +02:00
microblaze: Fix simpleImage format generation
2018-08-03 07:55:25 +02:00
MIPS: BCM63XX: fix switch core reset on BCM6368
2019-11-16 10:29:35 +01:00
mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy
2018-02-17 13:21:20 +01:00
nios2: reserve boot memory for device tree
2017-04-12 12:41:14 +02:00
kthread: fix boot hang (regression) on MIPS/OpenRISC
2018-09-19 22:47:11 +02:00
parisc: Fix vmap memory leak in ioremap()/iounmap()
2019-10-29 09:15:24 +01:00
powerpc/powernv: Restrict OPAL symbol map to only be readable by root
2019-10-17 13:42:04 -07:00
kvm: Convert kvm_lock to a mutex
2019-11-16 10:29:49 +01:00
sh: kernel: hw_breakpoint: Fix missing break in switch statement
2019-08-25 10:51:40 +02:00
bpf: get rid of pure_initcall dependency to enable jits
2019-08-25 10:51:40 +02:00
futex: Remove duplicated code and fix undefined behaviour
2018-05-19 10:27:00 +02:00
um: Silence lockdep complaint about mmap_sem
2019-08-04 09:33:39 +02:00
kvm: x86: mmu: Recovery of shattered NX large pages
2019-11-16 10:29:57 +01:00
xtensa: drop EXPORT_SYMBOL for outs*/ins*
2019-10-29 09:15:24 +01:00
cpu/hotplug: Provide knobs to control SMT
2018-08-15 18:14:46 +02:00
c6e94acbf6