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| author | Avi Kivity <avi@qumranet.com> | 2007-03-05 20:46:05 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-05-03 11:52:24 +0400 |
| commit | 1961d276c877b99f5f16aaf36377c75e0e191c3a (patch) | |
| tree | 4ea92fc2821bd0f9013ee567ee2f11c6cc532d79 /include/linux/kvm.h | |
| parent | 6722c51c51518af9581ab6cd9b6aec93774334a6 (diff) | |
| download | linux-1961d276c877b99f5f16aaf36377c75e0e191c3a.tar.xz | |
KVM: Add guest mode signal mask
Allow a special signal mask to be used while executing in guest mode. This
allows signals to be used to interrupt a vcpu without requiring signal
delivery to a userspace handler, which is quite expensive. Userspace still
receives -EINTR and can get the signal via sigwait().
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include/linux/kvm.h')
| -rw-r--r-- | include/linux/kvm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index b3af92e7bf5d..c0d10cd8088e 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -234,6 +234,12 @@ struct kvm_cpuid { struct kvm_cpuid_entry entries[0]; }; +/* for KVM_SET_SIGNAL_MASK */ +struct kvm_signal_mask { + __u32 len; + __u8 sigset[0]; +}; + #define KVMIO 0xAE /* @@ -273,5 +279,6 @@ struct kvm_cpuid { #define KVM_GET_MSRS _IOWR(KVMIO, 0x88, struct kvm_msrs) #define KVM_SET_MSRS _IOW(KVMIO, 0x89, struct kvm_msrs) #define KVM_SET_CPUID _IOW(KVMIO, 0x8a, struct kvm_cpuid) +#define KVM_SET_SIGNAL_MASK _IOW(KVMIO, 0x8b, struct kvm_signal_mask) #endif |