diff options
| author | Junaid Shahid <junaids@google.com> | 2019-01-04 03:22:21 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-07-05 14:48:46 +0300 |
| commit | 43fdcda96e2550c6d1c46fb8a78801aa2f7276ed (patch) | |
| tree | 8b7a1b7a953038ec917f9bf3e1c070fc166e0d49 /arch/x86/kvm/paging_tmpl.h | |
| parent | 60cec433c485564bd7caac38a9df5c1ed79ee560 (diff) | |
| download | linux-43fdcda96e2550c6d1c46fb8a78801aa2f7276ed.tar.xz | |
kvm: x86: Do not release the page inside mmu_set_spte()
Release the page at the call-site where it was originally acquired.
This makes the exit code cleaner for most call sites, since they
do not need to duplicate code between success and the failure
label.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 367a47df4ba0..2db96401178e 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -543,6 +543,7 @@ FNAME(prefetch_gpte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, mmu_set_spte(vcpu, spte, pte_access, 0, PT_PAGE_TABLE_LEVEL, gfn, pfn, true, true); + kvm_release_pfn_clean(pfn); return true; } @@ -694,7 +695,6 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, return ret; out_gpte_changed: - kvm_release_pfn_clean(pfn); return RET_PF_RETRY; } @@ -842,6 +842,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, u32 error_code, walker.pte_access &= ~ACC_EXEC_MASK; } + r = RET_PF_RETRY; spin_lock(&vcpu->kvm->mmu_lock); if (mmu_notifier_retry(vcpu->kvm, mmu_seq)) goto out_unlock; @@ -855,14 +856,11 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, u32 error_code, level, pfn, map_writable, prefault); ++vcpu->stat.pf_fixed; kvm_mmu_audit(vcpu, AUDIT_POST_PAGE_FAULT); - spin_unlock(&vcpu->kvm->mmu_lock); - - return r; out_unlock: spin_unlock(&vcpu->kvm->mmu_lock); kvm_release_pfn_clean(pfn); - return RET_PF_RETRY; + return r; } static gpa_t FNAME(get_level1_sp_gpa)(struct kvm_mmu_page *sp) |