KVM: VMX: Avoid saving and restoring msrs on lightweight vmexit

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In a lightweight exit (where we exit and reenter the guest without
scheduling or exiting to userspace in between), we don't need various
msrs on the host, and avoiding shuffling them around reduces raw exit
time by 8%.

i386 compile fix by Daniel Hecken <dh@bahntechnik.de>.

Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

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Eddie Dong 2007-05-17 18:55:15 +03:00 • committed by Avi Kivity

parent b3f37707b0

commit a75beee6e4

2 changed files with 76 additions and 56 deletions

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4

drivers/kvm/kvm.h

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130

drivers/kvm/vmx.c

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