| commit | e6adf28365b2fca0b5235cabff00c9f3d1e7bdf4 | |
| author | Avi Kivity <avi@qumranet.com> | |
| Mon, 30 Apr 2007 13:07:54 +0000 (30 16:07 +0300) | ||
| committer | Avi Kivity <avi@qumranet.com> | |
| Mon, 16 Jul 2007 09:05:38 +0000 (16 12:05 +0300) | ||
| tree | 75cdf0f0635a32e9337a4c2e3e5f332cf932f902 | treesnapshot (tar.gz zip) |
| parent | e925c5ba9380dad5fdf1d0a9d9199ac43be74c6a | commitdiff |
KVM: Avoid saving and restoring some host CPU state on lightweight vmexit
Many msrs and the like will only be used by the host if we schedule() or
return to userspace. Therefore, we avoid saving them if we handle the
exit within the kernel, and if a reschedule is not requested.
Based on a patch from Eddie Dong <eddie.dong@intel.com> with a couple of
fixes by me.
Signed-off-by: Yaozu(Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Many msrs and the like will only be used by the host if we schedule() or
return to userspace. Therefore, we avoid saving them if we handle the
exit within the kernel, and if a reschedule is not requested.
Based on a patch from Eddie Dong <eddie.dong@intel.com> with a couple of
fixes by me.
Signed-off-by: Yaozu(Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| drivers/kvm/kvm.h | diffblobblamehistory | |
| drivers/kvm/kvm_main.c | diffblobblamehistory | |
| drivers/kvm/vmx.c | diffblobblamehistory |