diff options
| author | Sean Christopherson <[email protected]> | 2019-09-27 14:45:17 -0700 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2019-10-22 13:34:10 +0200 |
| commit | b17b7436f2f0c4984f98a0b317b8362fd365700d (patch) | |
| tree | 6c72b83c58377f085f05040d52f2385befe712e6 /scripts/gdb/linux/tasks.py | |
| parent | 33af3a7ef9e6fb6fa5f0168c3c67f51776dafc54 (diff) | |
KVM: VMX: Skip GUEST_CR3 VMREAD+VMWRITE if the VMCS is up-to-date
Skip the VMWRITE to update GUEST_CR3 if CR3 is not available, i.e. has
not been read from the VMCS since the last VM-Enter. If vcpu->arch.cr3
is stale, kvm_read_cr3(vcpu) will refresh vcpu->arch.cr3 from the VMCS,
meaning KVM will do a VMREAD and then VMWRITE the value it just pulled
from the VMCS.
Note, this is a purely theoretical change, no instances of skipping
the VMREAD+VMWRITE have been observed with this change.
Tested-by: Reto Buerki <[email protected]>
Tested-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'scripts/gdb/linux/tasks.py')
0 files changed, 0 insertions, 0 deletions