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(parent: e925c5b) | patch
KVM: Avoid saving and restoring some host CPU state on lightweight vmexit
authorAvi Kivity <avi@qumranet.com>
Mon, 30 Apr 2007 13:07:54 +0000 (16:07 +0300)
committerAvi Kivity <avi@qumranet.com>
Mon, 16 Jul 2007 09:05:38 +0000 (12:05 +0300)
commite6adf28365b2fca0b5235cabff00c9f3d1e7bdf4
tree75cdf0f0635a32e9337a4c2e3e5f332cf932f902tree | snapshot (tar.gz zip)
parente925c5ba9380dad5fdf1d0a9d9199ac43be74c6acommit | diff
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>
drivers/kvm/kvm.h diff | blob | blame | history
drivers/kvm/kvm_main.c diff | blob | blame | history
drivers/kvm/vmx.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)