lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: x86: Extend KVM_SET_VCPU_EVENTS with selective updates

Browse Source 
User space may not want to overwrite asynchronously changing VCPU event
states on write-back. So allow to skip nmi.pending and sipi_vector by
setting corresponding bits in the flags field of kvm_vcpu_events.

[avi: advertise the bits in KVM_GET_VCPU_EVENTS]

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka
2009-12-06 18:24:15 +01:00
committed by Marcelo Tosatti
parent 6e24a6eff4
commit dab4b911a5
3 changed files with 21 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/include/asm/kvm.h
View File

@ -254,6 +254,10 @@ struct kvm_reinject_control {
__u8 reserved[31];
};
/* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
#define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
#define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
/* for KVM_GET/SET_VCPU_EVENTS */
struct kvm_vcpu_events {
struct {