diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2023-03-22 02:37:26 +0100 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-03-22 07:46:42 -0700 |
| commit | 2fdcc1b324189b5fb20655baebd40cd82e2bdf0c (patch) | |
| tree | eb33aa6d616d1ff75c66388fe410dd56cf3da08e /arch/x86/kvm/mmu/paging_tmpl.h | |
| parent | f3d90f901d18749dca096719540a075f59240051 (diff) | |
KVM: x86/mmu: Avoid indirect call for get_cr3
Most of the time, calls to get_guest_pgd result in calling
kvm_read_cr3 (the exception is only nested TDP). Hardcode
the default instead of using the get_cr3 function, avoiding
a retpoline if they are enabled.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mathias Krause <minipli@grsecurity.net>
Link: https://lore.kernel.org/r/20230322013731.102955-2-minipli@grsecurity.net
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/mmu/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/mmu/paging_tmpl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index 03a9577329fc..0662e0278e70 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -324,7 +324,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker, trace_kvm_mmu_pagetable_walk(addr, access); retry_walk: walker->level = mmu->cpu_role.base.level; - pte = mmu->get_guest_pgd(vcpu); + pte = kvm_mmu_get_guest_pgd(vcpu, mmu); have_ad = PT_HAVE_ACCESSED_DIRTY(mmu); #if PTTYPE == 64 |