| commit | 2345df8c555ecb92c0c36172c07d5ac321a92dc7 | [log] [tgz] |
|---|---|---|
| author | Avi Kivity <avi@qumranet.com> | Tue Apr 17 15:30:24 2007 +0300 |
| committer | Avi Kivity <avi@qumranet.com> | Thu May 03 10:52:29 2007 +0300 |
| tree | e61e3a6714d4fd06dbddb3d381494e505fd91ff0 | |
| parent | c9047f533373e934b96d19d6a3d313ca2132fbe5 [diff] |
KVM: VMX: Reduce unnecessary saving of host msrs THe automatically switched msrs are never changed on the host (with the exception of MSR_KERNEL_GS_BASE) and thus there is no need to save them on every vm entry. This reduces vmexit latency by ~400 cycles on i386 and by ~900 cycles (10%) on x86_64. Signed-off-by: Avi Kivity <avi@qumranet.com>