KVM: x86: Use KVM_REQ_TLB_FLUSH_GUEST to handle INVPCID(ALL) emulation

Browse source

Use KVM_REQ_TLB_FLUSH_GUEST instead of KVM_REQ_MMU_RELOAD when emulating
INVPCID of all contexts.  In the current code, this is a glorified nop as
TLB_FLUSH_GUEST becomes kvm_mmu_unload(), same as MMU_RELOAD, when TDP
is disabled, which is the only time INVPCID is only intercepted+emulated.
In the future, reusing TLB_FLUSH_GUEST will simplify optimizing paths
that emulate a guest TLB flush, e.g. by synchronizing as needed instead
of completely unloading all MMUs.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210609234235.1244004-11-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Sean Christopherson 2021-06-09 16:42:30 -07:00 • committed by Paolo Bonzini

parent 25b62c6274

commit 28f28d453f

1 changed files with 1 additions and 1 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

2

arch/x86/kvm/x86.c

View file