Move the initialization of fault.{gfn,slot} earlier in the page fault
handling code for fully direct MMUs. This will enable a future commit to
split out TDP MMU page fault handling without needing to duplicate the
initialization of these 2 fields.
Opportunistically take advantage of the fact that fault.gfn is
initialized in kvm_tdp_page_fault() rather than recomputing it from
fault->addr.
No functional change intended.
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <
20220921173546.
2674386-8-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
bool is_tdp_mmu_fault = is_tdp_mmu(vcpu->arch.mmu);
int r;
- fault->gfn = fault->addr >> PAGE_SHIFT;
- fault->slot = kvm_vcpu_gfn_to_memslot(vcpu, fault->gfn);
-
if (page_fault_handle_page_track(vcpu, fault))
return RET_PF_EMULATE;
if (shadow_memtype_mask && kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
for ( ; fault->max_level > PG_LEVEL_4K; --fault->max_level) {
int page_num = KVM_PAGES_PER_HPAGE(fault->max_level);
- gfn_t base = (fault->addr >> PAGE_SHIFT) & ~(page_num - 1);
+ gfn_t base = fault->gfn & ~(page_num - 1);
if (kvm_mtrr_check_gfn_range_consistency(vcpu, base, page_num))
break;
};
int r;
+ if (vcpu->arch.mmu->root_role.direct) {
+ fault.gfn = fault.addr >> PAGE_SHIFT;
+ fault.slot = kvm_vcpu_gfn_to_memslot(vcpu, fault.gfn);
+ }
+
/*
* Async #PF "faults", a.k.a. prefetch faults, are not faults from the
* guest perspective and have already been counted at the time of the