AuxXxilium/linux_dsm_epyc7002
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1be0e61c1f
linux_dsm_epyc7002/arch/x86
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Xiao Guangrong 1be0e61c1f KVM, pkeys: save/restore PKRU when guest/host switches 
Currently XSAVE state of host is not restored after VM-exit and PKRU
is managed by XSAVE so the PKRU from guest is still controlling the
memory access even if the CPU is running the code of host. This is
not safe as KVM needs to access the memory of userspace (e,g QEMU) to
do some emulation.

So we save/restore PKRU when guest/host switches.

Signed-off-by: Huaitong Han <huaitong.han@intel.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 16:21:06 +01:00
..
boot Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
configs Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-03-17 11:33:45 -07:00
crypto Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
entry Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
events Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
ia32
include x86: pkey: introduce write_pkru() for KVM 2016-03-22 16:21:05 +01:00
kernel Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
kvm KVM, pkeys: save/restore PKRU when guest/host switches 2016-03-22 16:21:06 +01:00
lguest Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-14 17:58:53 -07:00
lib Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
math-emu
mm Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
net x86/asm/bpf: Create stack frames in bpf_jit.S 2016-02-24 08:35:44 +01:00
oprofile Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
pci PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
platform Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:58:18 -07:00
power x86/asm/power: Create stack frames in hibernate_asm_64.S 2016-02-24 08:35:43 +01:00
purgatory objtool: Mark non-standard object files and directories 2016-02-29 08:35:02 +01:00
ras
realmode objtool: Mark non-standard object files and directories 2016-02-29 08:35:02 +01:00
tools
um Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
video
xen Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
.gitignore
Kbuild perf/x86: Move perf_event.c ............... => x86/events/core.c 2016-02-09 10:23:49 +01:00
Kconfig Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
Kconfig.cpu
Kconfig.debug Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-15 09:32:27 -07:00
Makefile
Makefile_32.cpu
Makefile.um