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fe2a3027e7
linux/arch/x86
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Radim Krčmář fe2a3027e7 KVM: x86: fix backward migration with async_PF 
Guests on new hypersiors might set KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT
bit when enabling async_PF, but this bit is reserved on old hypervisors,
which results in a failure upon migration.

To avoid breaking different cases, we are checking for CPUID feature bit
before enabling the feature and nothing else.

Fixes: 52a5c155cf ("KVM: async_pf: Let guest support delivery of async_pf from guest mode")
Cc: <stable@vger.kernel.org>
Reviewed-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-02-24 01:43:48 +01:00
..
boot Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2018-01-31 13:12:31 -08:00
configs x86/unwind: Rename unwinder config options to 'CONFIG_UNWINDER_*' 2017-10-14 10:12:12 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-01-31 14:22:45 -08:00
entry KVM changes for 4.16 2018-02-10 13:16:35 -08:00
events x86/events/intel/ds: Add PERF_SAMPLE_PERIOD into PEBS_FREERUNNING_FLAGS 2018-02-05 13:48:44 -03:00
hyperv KVM changes for 4.16 2018-02-10 13:16:35 -08:00
ia32 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
include KVM: x86: fix backward migration with async_PF 2018-02-24 01:43:48 +01:00
kernel KVM: x86: fix backward migration with async_PF 2018-02-24 01:43:48 +01:00
kvm KVM: x86: fix backward migration with async_PF 2018-02-24 01:43:48 +01:00
lib Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-04 11:45:55 -08:00
math-emu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mm KVM changes for 4.16 2018-02-10 13:16:35 -08:00
net bpf, x86_64: remove obsolete exception handling from div/mod 2018-01-26 16:42:06 -08:00
oprofile Modules updates for v4.15 2017-11-15 13:46:33 -08:00
pci pci-v4.16-changes 2018-02-06 09:59:40 -08:00
platform drm/graphics pull request for v4.16-rc1 2018-02-01 17:48:47 -08:00
power x86: hibernate: fix swsusp_arch_resume() prototype 2018-02-07 12:18:23 +01:00
purgatory License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ras License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
realmode x86/realmode: Don't decrypt trampoline area under SEV 2017-11-07 15:35:55 +01:00
tools x86/tools: Standardize output format of insn_decode_test 2017-12-12 13:27:47 +01:00
um Merge commit 'upstream-x86-entry' into WIP.x86/mm 2017-12-17 12:58:53 +01:00
video
xen xen: fixes for 4.16 rc1 2018-02-09 10:07:39 -08:00
.gitignore
Kbuild
Kconfig Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
Kconfig.cpu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.debug Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-30 13:01:09 -08:00
Makefile Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-14 15:30:02 -08:00
Makefile_32.cpu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.um License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00