| commit | f459a707ed313f110e4939d634317edcf9e96774 | |
| author | Sean Christopherson <sean.j.christopherson@intel.com> | |
| Mon, 27 Aug 2018 22:21:11 +0000 (27 15:21 -0700) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Wed, 19 Sep 2018 22:51:41 +0000 (20 00:51 +0200) | ||
| tree | d2be01b3023b1c4e9738ba540b822837ed080a27 | treesnapshot (tar.gz zip) |
| parent | 4c008127e4716d246b44b403f8a65ae9744d32c4 | commitdiff |
KVM: VMX: modify preemption timer bit only when arming timer
Provide a singular location where the VMX preemption timer bit is
set/cleared so that future usages of the preemption timer can ensure
the VMCS bit is up-to-date without having to modify unrelated code
paths. For example, the preemption timer can be used to force an
immediate VMExit. Cache the status of the timer to avoid redundant
VMREAD and VMWRITE, e.g. if the timer stays armed across multiple
VMEnters/VMExits.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Provide a singular location where the VMX preemption timer bit is
set/cleared so that future usages of the preemption timer can ensure
the VMCS bit is up-to-date without having to modify unrelated code
paths. For example, the preemption timer can be used to force an
immediate VMExit. Cache the status of the timer to avoid redundant
VMREAD and VMWRITE, e.g. if the timer stays armed across multiple
VMEnters/VMExits.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| arch/x86/kvm/vmx.c | diffblobblamehistory |