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| author | Gleb Natapov <gleb@redhat.com> | 2012-04-19 14:06:29 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-04-24 16:36:18 +0300 |
| commit | 413837714232b3a4c0705e915d8af75ad521d083 (patch) | |
| tree | 8caabcc3565c5482e6d8da921ed2b166c0c1a230 /arch/x86/include/asm | |
| parent | 07975ad3b30579ca27d880491ad992326b930c63 (diff) | |
| download | linux-413837714232b3a4c0705e915d8af75ad521d083.tar.gz linux-413837714232b3a4c0705e915d8af75ad521d083.tar.xz linux-413837714232b3a4c0705e915d8af75ad521d083.zip | |
KVM: Introduce bitmask for apic attention reasons
The patch introduces a bitmap that will hold reasons apic should be
checked during vmexit. This is in a preparation for vp eoi patch
that will add one more check on vmexit. With the bitmap we can do
if(apic_attention) to check everything simultaneously which will
add zero overhead on the fast path.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index f624ca72ea24..69e39bc7e36f 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -172,6 +172,9 @@ enum { #define DR7_FIXED_1 0x00000400 #define DR7_VOLATILE 0xffff23ff +/* apic attention bits */ +#define KVM_APIC_CHECK_VAPIC 0 + /* * We don't want allocation failures within the mmu code, so we preallocate * enough memory for a single page fault in a cache. @@ -337,6 +340,7 @@ struct kvm_vcpu_arch { u64 efer; u64 apic_base; struct kvm_lapic *apic; /* kernel irqchip context */ + unsigned long apic_attention; int32_t apic_arb_prio; int mp_state; int sipi_vector; |