[PATCH 08/16] KVM: MMU: change handle_abnormal_pfn() arguments to kvm_page_fault

From: Paolo Bonzini
Date: Sat Aug 07 2021 - 09:50:20 EST


Pass struct kvm_page_fault to handle_abnormal_pfn() instead of
extracting the arguments from the struct.

Suggested-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/mmu/mmu.c | 17 ++++++++---------
arch/x86/kvm/mmu/paging_tmpl.h | 2 +-
2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index a6366f1c4197..cec59ac2e1cd 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -3024,18 +3024,18 @@ static int kvm_handle_bad_page(struct kvm_vcpu *vcpu, gfn_t gfn, kvm_pfn_t pfn)
return -EFAULT;
}

-static bool handle_abnormal_pfn(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
- kvm_pfn_t pfn, unsigned int access,
- int *ret_val)
+static bool handle_abnormal_pfn(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault,
+ unsigned int access, int *ret_val)
{
/* The pfn is invalid, report the error! */
- if (unlikely(is_error_pfn(pfn))) {
- *ret_val = kvm_handle_bad_page(vcpu, gfn, pfn);
+ if (unlikely(is_error_pfn(fault->pfn))) {
+ *ret_val = kvm_handle_bad_page(vcpu, fault->gfn, fault->pfn);
return true;
}

- if (unlikely(is_noslot_pfn(pfn))) {
- vcpu_cache_mmio_info(vcpu, gva, gfn,
+ if (unlikely(is_noslot_pfn(fault->pfn))) {
+ gva_t gva = fault->is_tdp ? 0 : fault->addr;
+ vcpu_cache_mmio_info(vcpu, gva, fault->gfn,
access & shadow_mmio_access_mask);
/*
* If MMIO caching is disabled, emulate immediately without
@@ -3904,8 +3904,7 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault
if (try_async_pf(vcpu, fault))
return RET_PF_RETRY;

- if (handle_abnormal_pfn(vcpu, fault->is_tdp ? 0 : gpa,
- fault->gfn, fault->pfn, ACC_ALL, &r))
+ if (handle_abnormal_pfn(vcpu, fault, ACC_ALL, &r))
return r;

r = RET_PF_RETRY;
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 6ead472674ad..9b90097dea22 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -882,7 +882,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault
if (try_async_pf(vcpu, fault))
return RET_PF_RETRY;

- if (handle_abnormal_pfn(vcpu, addr, fault->gfn, fault->pfn, walker.pte_access, &r))
+ if (handle_abnormal_pfn(vcpu, fault, walker.pte_access, &r))
return r;

/*
--
2.27.0