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| author | Radim Krčmář <rkrcmar@redhat.com> | 2015-07-01 15:31:49 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-08-12 16:33:19 +0200 |
| commit | 1fba7ba2fd5f40a09c39a2b8c39a199abc497790 (patch) | |
| tree | 2696bdd684e7c2dfe9ca91d8297a60bb35d1874a /arch/x86/include | |
| parent | f17199d80d11c26da96b1de81c8f7806ed7304f6 (diff) | |
| download | kernel_samsung_smdk4412-1fba7ba2fd5f40a09c39a2b8c39a199abc497790.zip kernel_samsung_smdk4412-1fba7ba2fd5f40a09c39a2b8c39a199abc497790.tar.gz kernel_samsung_smdk4412-1fba7ba2fd5f40a09c39a2b8c39a199abc497790.tar.bz2 | |
KVM: x86: make vapics_in_nmi_mode atomic
commit 42720138b06301cc8a7ee8a495a6d021c4b6a9bc upstream.
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]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 9171618..93ce7e4 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -472,7 +472,7 @@ struct kvm_arch { struct kvm_pic *vpic; struct kvm_ioapic *vioapic; struct kvm_pit *vpit; - int vapics_in_nmi_mode; + atomic_t vapics_in_nmi_mode; unsigned int tss_addr; struct page *apic_access_page; |