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KVM: x86: make vapics_in_nmi_mode atomic
authorRadim Krčmář <rkrcmar@redhat.com>
Wed, 1 Jul 2015 13:31:49 +0000 (15:31 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 3 Jul 2015 16:55:17 +0000 (18:55 +0200)
commit42720138b06301cc8a7ee8a495a6d021c4b6a9bc
treefbffa8a4feceef419b8d1f56cd521148095a8ba5tree | snapshot
parent2ecd9d29abb171d6e97a4f3eb29d7456a11401b7commit | diff
KVM: x86: make vapics_in_nmi_mode atomic

Writes were a bit racy, but hard to turn into a bug at the same time.
(Particularly because modern Linux doesn't use this feature anymore.)

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
[Actually the next patch makes it much, much easier to trigger the race
 so I'm including this one for stable@ as well. - Paolo]
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/include/asm/kvm_host.h diff | blob | blame | history
arch/x86/kvm/i8254.c diff | blob | blame | history
arch/x86/kvm/lapic.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git