KVM: SVM: Move asid to vcpu_svm

Browse source

KVM does not have separate ASIDs for L1 and L2; either the nested
hypervisor and nested guests share a single ASID, or on older processor
the ASID is used only to implement TLB flushing.

Either way, ASIDs are handled at the VM level.  In preparation
for having different VMCBs passed to VMLOAD/VMRUN/VMSAVE for L1 and
L2, store the current ASID to struct vcpu_svm and only move it to
the VMCB in svm_vcpu_run.  This way, TLB flushes can be applied
no matter which VMCB will be active during the next svm_vcpu_run.

Signed-off-by: Cathy Avery <cavery@redhat.com>
Message-Id: <20201011184818.3609-2-cavery@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Cathy Avery 2020-10-11 14:48:17 -04:00 • committed by Paolo Bonzini

parent 789f52c071

commit 7e8e6eed75

2 changed files with 8 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

arch/x86/kvm/svm/svm.c

View file

1

arch/x86/kvm/svm/svm.h

View file