Messages in this thread | | | Date | Tue, 10 Oct 2017 21:16:15 +0200 | From | Radim Krčmář <> | Subject | Re: [PATCH] KVM: x86: extend usage of RET_MMIO_PF_* constants |
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2017-10-10 11:10+0200, Paolo Bonzini: > The x86 MMU if full of code that returns 0 and 1 for retry/emulate. Use > the existing RET_MMIO_PF_RETRY/RET_MMIO_PF_EMULATE enum, renaming it to > drop the MMIO part. > > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> > --- > diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h > @@ -788,7 +788,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, u32 error_code, > > if (try_async_pf(vcpu, prefault, walker.gfn, addr, &pfn, write_fault, > &map_writable)) > - return 0; > + return RET_PF_RETRY; > > if (handle_abnormal_pfn(vcpu, addr, walker.gfn, pfn, walker.pte_access, &r)) > return r; > @@ -833,7 +833,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, u32 error_code, > out_unlock: > spin_unlock(&vcpu->kvm->mmu_lock); > kvm_release_pfn_clean(pfn); > - return 0; > + return RET_PF_EMULATE;
A direct conversion would return RET_PF_RETRY, is this some optimization?
Apart from that,
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Thanks.
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