No functional change intended. We will need to analyze slot information
to map PTEs for KVM_MEM_ALLONES slots aggressively.
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
arch/x86/kvm/mmu/mmu.c | 14 ++++++++------
arch/x86/kvm/mmu/paging_tmpl.h | 7 +++++--
2 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index e618472c572b..3db499df2dfc 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4078,11 +4078,10 @@ static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
kvm_vcpu_gfn_to_hva(vcpu, gfn), &arch);
}
-static bool try_async_pf(struct kvm_vcpu *vcpu, bool prefault, gfn_t gfn,
- gpa_t cr2_or_gpa, kvm_pfn_t *pfn, bool write,
- bool *writable)
+static bool try_async_pf(struct kvm_vcpu *vcpu, struct kvm_memory_slot *slot,
+ bool prefault, gfn_t gfn, gpa_t cr2_or_gpa,
+ kvm_pfn_t *pfn, bool write, bool *writable)
{
- struct kvm_memory_slot *slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
bool async;
/* Don't expose private memslots to L2. */
@@ -4118,7 +4117,7 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code,
bool exec = error_code & PFERR_FETCH_MASK;
bool lpage_disallowed = exec && is_nx_huge_page_enabled();
bool map_writable;
-
+ struct kvm_memory_slot *slot;
gfn_t gfn = gpa >> PAGE_SHIFT;
unsigned long mmu_seq;
kvm_pfn_t pfn;
@@ -4140,7 +4139,10 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code,
mmu_seq = vcpu->kvm->mmu_notifier_seq;
smp_rmb();
- if (try_async_pf(vcpu, prefault, gfn, gpa, &pfn, write, &map_writable))
+ slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
+
+ if (try_async_pf(vcpu, slot, prefault, gfn, gpa, &pfn, write,
+ &map_writable))
return RET_PF_RETRY;
if (handle_abnormal_pfn(vcpu, is_tdp ? 0 : gpa, gfn, pfn, ACC_ALL, &r))
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index efec7d27b8c5..98e368788e8b 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -781,6 +781,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gpa_t addr, u32 error_code,
int write_fault = error_code & PFERR_WRITE_MASK;
int user_fault = error_code & PFERR_USER_MASK;
struct guest_walker walker;
+ struct kvm_memory_slot *slot;
int r;
kvm_pfn_t pfn;
unsigned long mmu_seq;
@@ -835,8 +836,10 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gpa_t addr, u32 error_code,
mmu_seq = vcpu->kvm->mmu_notifier_seq;
smp_rmb();
- if (try_async_pf(vcpu, prefault, walker.gfn, addr, &pfn, write_fault,
- &map_writable))
+ slot = kvm_vcpu_gfn_to_memslot(vcpu, walker.gfn);
+
+ if (try_async_pf(vcpu, slot, prefault, walker.gfn, addr, &pfn,
+ write_fault, &map_writable))
return RET_PF_RETRY;
if (handle_abnormal_pfn(vcpu, addr, walker.gfn, pfn, walker.pte_access, &r))
--
2.25.4
