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author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-04-11 15:25:11 +0400 |
---|---|---|
committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-04-16 23:32:39 +0400 |
commit | d78f2664832f8d70e36422af9a10e44276dced48 (patch) | |
tree | 0868c6e8a770cd4a63d9ad3a58d6ddceeb2a6af5 /arch/x86/include/asm/irq_vectors.h | |
parent | a547c6db4d2f16ba5ce8e7054bffad6acc248d40 (diff) | |
download | linux-d78f2664832f8d70e36422af9a10e44276dced48.tar.xz |
KVM: VMX: Register a new IPI for posted interrupt
Posted Interrupt feature requires a special IPI to deliver posted interrupt
to guest. And it should has a high priority so the interrupt will not be
blocked by others.
Normally, the posted interrupt will be consumed by vcpu if target vcpu is
running and transparent to OS. But in some cases, the interrupt will arrive
when target vcpu is scheduled out. And host will see it. So we need to
register a dump handler to handle it.
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/irq_vectors.h')
-rw-r--r-- | arch/x86/include/asm/irq_vectors.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h index aac5fa62a86c..5702d7e3111d 100644 --- a/arch/x86/include/asm/irq_vectors.h +++ b/arch/x86/include/asm/irq_vectors.h @@ -102,6 +102,11 @@ */ #define X86_PLATFORM_IPI_VECTOR 0xf7 +/* Vector for KVM to deliver posted interrupt IPI */ +#ifdef CONFIG_HAVE_KVM +#define POSTED_INTR_VECTOR 0xf2 +#endif + /* * IRQ work vector: */ |