From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7BDBC4534A4 for ; Wed, 3 Jun 2026 10:58:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780484309; cv=none; b=d/lx7WCQiu934JzIg4AY4ycsiCpud9P8sIVlHOlVNUUZ5c1vfOQgnY9N8TO9LSeAN2YdqCfaXTJDIaOPVf58iAXuS4pSve3ke+hi7MKvML7ZrHtTxA4pXatMB4uBAymdIBNjWz0btGU6qvT3fuoldMIXZX3KpRPADRqWKdSw7Wo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780484309; c=relaxed/simple; bh=4V8EqgZ1OeibvvRySEAsrj4NuRCVFKy5Z/6tHGw9yjc=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FmcK8jaMGrFWxMHpTlGgbEAtqJJP0hR6ea8+q9LKyalOhSL7ojCHG39/knyryE8XgDsiwdgFJJCXjrMcqsUXlFNBDT3G0HR+T2m3p5gFoZzmwi+AqRHc2JtQ7nH1xktUh4IXbU4O14gW6dwcp50+0E5nJJGxJMqLLxRidSksCIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=LlvChqwI; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LlvChqwI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1780484304; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KR+95XRCfmLBXT1JoCfqqhJI7+H2LuOLKQpZ22bvTq0=; b=LlvChqwIyJNq8cka3bdByijNN3XcdGbuFHiyOo+dDqWYr7cWDic5IclP3px9tTRVndS9ou Ix0K3YxChaFkBa2Yc/Iii1KHWvSibXmyOwu3+KvJQSJEsy+IDkAYDCW9qfsRinvrt2pPly rMH4Bv7RtIBcRFsteZBQtN2virf/8R8= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-584-G-8qqNXlOp-l8bzkzf1gMA-1; Wed, 03 Jun 2026 06:58:21 -0400 X-MC-Unique: G-8qqNXlOp-l8bzkzf1gMA-1 X-Mimecast-MFC-AGG-ID: G-8qqNXlOp-l8bzkzf1gMA_1780484300 Received: from mx-prod-int-10.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-10.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.95]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 82A27195608C; Wed, 3 Jun 2026 10:58:20 +0000 (UTC) Received: from virtlab1023.lab.eng.rdu2.redhat.lab.eng.rdu2.redhat.com (virtlab1023.lab.eng.rdu2.redhat.com [10.8.1.187]) by mx-prod-int-10.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 280F5404; Wed, 3 Jun 2026 10:58:20 +0000 (UTC) From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: [PATCH 09/24] KVM: x86/mmu: move gva_to_gpa to struct kvm_pagewalk Date: Wed, 3 Jun 2026 06:57:59 -0400 Message-ID: <20260603105814.10236-10-pbonzini@redhat.com> In-Reply-To: <20260603105814.10236-1-pbonzini@redhat.com> References: <20260603105814.10236-1-pbonzini@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.6 on 10.30.177.95 gva_to_gpa is the main entry point into walk_mmu, which is only used for guest page table walking (as opposed to building the page tables). Moving gva_to_gpa to struct kvm_pagewalk is a steps towards making walk_mmu a struct kvm_pagewalk. Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/kvm_host.h | 6 +++--- arch/x86/kvm/mmu/mmu.c | 26 +++++++++++++------------- arch/x86/kvm/mmu/paging_tmpl.h | 6 +++--- arch/x86/kvm/svm/nested.c | 4 ++-- arch/x86/kvm/vmx/nested.c | 4 ++-- arch/x86/kvm/x86.c | 30 +++++++++++++++--------------- 6 files changed, 38 insertions(+), 38 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 81c0ae3fc3f3..536a7d325d89 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -481,6 +481,9 @@ struct kvm_page_fault; */ struct kvm_pagewalk { unsigned long (*get_guest_pgd)(struct kvm_vcpu *vcpu); + gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_pagewalk *w, + gpa_t gva_or_gpa, u64 access, + struct x86_exception *exception); }; struct kvm_mmu { @@ -490,9 +493,6 @@ struct kvm_mmu { int (*page_fault)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault); void (*inject_page_fault)(struct kvm_vcpu *vcpu, struct x86_exception *fault); - gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, - gpa_t gva_or_gpa, u64 access, - struct x86_exception *exception); int (*sync_spte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, int i); struct kvm_mmu_root_info root; diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 8981e5526ba1..552a104e9496 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4342,7 +4342,7 @@ void kvm_mmu_sync_prev_roots(struct kvm_vcpu *vcpu) kvm_mmu_free_roots(vcpu->kvm, vcpu->arch.mmu, roots_to_free); } -static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, +static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_pagewalk *w, gpa_t vaddr, u64 access, struct x86_exception *exception) { @@ -4354,7 +4354,7 @@ static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, * user-mode address if CR0.PG=0. Therefore *include* ACC_USER_MASK in * the last argument to kvm_translate_gpa (which NPT does not use). */ - return kvm_translate_gpa(vcpu, &mmu->w, vaddr, access | PFERR_GUEST_FINAL_MASK, + return kvm_translate_gpa(vcpu, w, vaddr, access | PFERR_GUEST_FINAL_MASK, exception, ACC_ALL); } @@ -5119,7 +5119,7 @@ EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_tdp_mmu_map_private_pfn); static void nonpaging_init_context(struct kvm_mmu *context) { context->page_fault = nonpaging_page_fault; - context->gva_to_gpa = nonpaging_gva_to_gpa; + context->w.gva_to_gpa = nonpaging_gva_to_gpa; context->sync_spte = NULL; } @@ -5750,14 +5750,14 @@ static void reset_guest_paging_metadata(struct kvm_vcpu *vcpu, static void paging64_init_context(struct kvm_mmu *context) { context->page_fault = paging64_page_fault; - context->gva_to_gpa = paging64_gva_to_gpa; + context->w.gva_to_gpa = paging64_gva_to_gpa; context->sync_spte = paging64_sync_spte; } static void paging32_init_context(struct kvm_mmu *context) { context->page_fault = paging32_page_fault; - context->gva_to_gpa = paging32_gva_to_gpa; + context->w.gva_to_gpa = paging32_gva_to_gpa; context->sync_spte = paging32_sync_spte; } @@ -5886,11 +5886,11 @@ static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu, context->w.get_guest_pgd = get_guest_cr3; if (!is_cr0_pg(context)) - context->gva_to_gpa = nonpaging_gva_to_gpa; + context->w.gva_to_gpa = nonpaging_gva_to_gpa; else if (is_cr4_pae(context)) - context->gva_to_gpa = paging64_gva_to_gpa; + context->w.gva_to_gpa = paging64_gva_to_gpa; else - context->gva_to_gpa = paging32_gva_to_gpa; + context->w.gva_to_gpa = paging32_gva_to_gpa; reset_guest_paging_metadata(vcpu, context); reset_tdp_shadow_zero_bits_mask(context); @@ -6012,7 +6012,7 @@ void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly, context->root_role.word = new_mode.base.word; context->page_fault = ept_page_fault; - context->gva_to_gpa = ept_gva_to_gpa; + context->w.gva_to_gpa = ept_gva_to_gpa; context->sync_spte = ept_sync_spte; update_permission_bitmask(context, true, true); @@ -6067,13 +6067,13 @@ static void init_kvm_nested_mmu(struct kvm_vcpu *vcpu, * the gva_to_gpa functions between mmu and nested_mmu are swapped. */ if (!is_paging(vcpu)) - g_context->gva_to_gpa = nonpaging_gva_to_gpa; + g_context->w.gva_to_gpa = nonpaging_gva_to_gpa; else if (is_long_mode(vcpu)) - g_context->gva_to_gpa = paging64_gva_to_gpa; + g_context->w.gva_to_gpa = paging64_gva_to_gpa; else if (is_pae(vcpu)) - g_context->gva_to_gpa = paging64_gva_to_gpa; + g_context->w.gva_to_gpa = paging64_gva_to_gpa; else - g_context->gva_to_gpa = paging32_gva_to_gpa; + g_context->w.gva_to_gpa = paging32_gva_to_gpa; reset_guest_paging_metadata(vcpu, g_context); } diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index 9c3ccea6cd6b..6fcce1d9b787 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -889,7 +889,7 @@ static gpa_t FNAME(get_level1_sp_gpa)(struct kvm_mmu_page *sp) } /* Note, @addr is a GPA when gva_to_gpa() translates an L2 GPA to an L1 GPA. */ -static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, +static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_pagewalk *w, gpa_t addr, u64 access, struct x86_exception *exception) { @@ -899,10 +899,10 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, #ifndef CONFIG_X86_64 /* A 64-bit GVA should be impossible on 32-bit KVM. */ - WARN_ON_ONCE((addr >> 32) && mmu == vcpu->arch.walk_mmu); + WARN_ON_ONCE((addr >> 32) && w == &vcpu->arch.walk_mmu->w); #endif - r = FNAME(walk_addr_generic)(&walker, vcpu, &mmu->w, addr, access); + r = FNAME(walk_addr_generic)(&walker, vcpu, w, addr, access); if (r) { gpa = gfn_to_gpa(walker.gfn); diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 9f491f45eeb6..d49e3ae28143 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -2096,7 +2096,7 @@ static gpa_t svm_translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 pte_access) { struct vcpu_svm *svm = to_svm(vcpu); - struct kvm_mmu *mmu = vcpu->arch.mmu; + struct kvm_pagewalk *w = &vcpu->arch.mmu->w; BUG_ON(!mmu_is_nested(vcpu)); @@ -2104,7 +2104,7 @@ static gpa_t svm_translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, if (!(svm->nested.ctl.misc_ctl & SVM_MISC_ENABLE_GMET)) access |= PFERR_USER_MASK; - return mmu->gva_to_gpa(vcpu, mmu, gpa, access, exception); + return w->gva_to_gpa(vcpu, w, gpa, access, exception); } struct kvm_x86_nested_ops svm_nested_ops = { diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index db63ae44c988..7d3106c2f83c 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -7450,7 +7450,7 @@ static gpa_t vmx_translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, struct x86_exception *exception, u64 pte_access) { - struct kvm_mmu *mmu = vcpu->arch.mmu; + struct kvm_pagewalk *w = &vcpu->arch.mmu->w; BUG_ON(!mmu_is_nested(vcpu)); @@ -7462,7 +7462,7 @@ static gpa_t vmx_translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, if ((pte_access & ACC_USER_MASK) && (access & PFERR_GUEST_FINAL_MASK)) access |= PFERR_USER_MASK; - return mmu->gva_to_gpa(vcpu, mmu, gpa, access, exception); + return w->gva_to_gpa(vcpu, w, gpa, access, exception); } struct kvm_x86_nested_ops vmx_nested_ops = { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 0f44482d4be0..00566655ad05 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7851,21 +7851,21 @@ void kvm_get_segment(struct kvm_vcpu *vcpu, gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, struct x86_exception *exception) { - struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + struct kvm_pagewalk *gva_walk = &vcpu->arch.walk_mmu->w; u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0; - return mmu->gva_to_gpa(vcpu, mmu, gva, access, exception); + return gva_walk->gva_to_gpa(vcpu, gva_walk, gva, access, exception); } EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_mmu_gva_to_gpa_read); gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, struct x86_exception *exception) { - struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + struct kvm_pagewalk *gva_walk = &vcpu->arch.walk_mmu->w; u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0; access |= PFERR_WRITE_MASK; - return mmu->gva_to_gpa(vcpu, mmu, gva, access, exception); + return gva_walk->gva_to_gpa(vcpu, gva_walk, gva, access, exception); } EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_mmu_gva_to_gpa_write); @@ -7873,21 +7873,21 @@ EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_mmu_gva_to_gpa_write); gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, struct x86_exception *exception) { - struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + struct kvm_pagewalk *gva_walk = &vcpu->arch.walk_mmu->w; - return mmu->gva_to_gpa(vcpu, mmu, gva, 0, exception); + return gva_walk->gva_to_gpa(vcpu, gva_walk, gva, 0, exception); } static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes, struct kvm_vcpu *vcpu, u64 access, struct x86_exception *exception) { - struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + struct kvm_pagewalk *gva_walk = &vcpu->arch.walk_mmu->w; void *data = val; int r = X86EMUL_CONTINUE; while (bytes) { - gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access, exception); + gpa_t gpa = gva_walk->gva_to_gpa(vcpu, gva_walk, addr, access, exception); unsigned offset = addr & (PAGE_SIZE-1); unsigned toread = min(bytes, (unsigned)PAGE_SIZE - offset); int ret; @@ -7915,14 +7915,14 @@ static int kvm_fetch_guest_virt(struct x86_emulate_ctxt *ctxt, struct x86_exception *exception) { struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt); - struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + struct kvm_pagewalk *gva_walk = &vcpu->arch.walk_mmu->w; u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0; unsigned offset; int ret; /* Inline kvm_read_guest_virt_helper for speed. */ - gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access|PFERR_FETCH_MASK, - exception); + gpa_t gpa = gva_walk->gva_to_gpa(vcpu, gva_walk, addr, access|PFERR_FETCH_MASK, + exception); if (unlikely(gpa == INVALID_GPA)) return X86EMUL_PROPAGATE_FAULT; @@ -7974,12 +7974,12 @@ static int kvm_write_guest_virt_helper(gva_t addr, void *val, unsigned int bytes struct kvm_vcpu *vcpu, u64 access, struct x86_exception *exception) { - struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + struct kvm_pagewalk *gva_walk = &vcpu->arch.walk_mmu->w; void *data = val; int r = X86EMUL_CONTINUE; while (bytes) { - gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access, exception); + gpa_t gpa = gva_walk->gva_to_gpa(vcpu, gva_walk, addr, access, exception); unsigned offset = addr & (PAGE_SIZE-1); unsigned towrite = min(bytes, (unsigned)PAGE_SIZE - offset); int ret; @@ -8098,7 +8098,7 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva, return 1; } - *gpa = mmu->gva_to_gpa(vcpu, mmu, gva, access, exception); + *gpa = mmu->w.gva_to_gpa(vcpu, &mmu->w, gva, access, exception); if (*gpa == INVALID_GPA) return -1; @@ -14217,7 +14217,7 @@ void kvm_fixup_and_inject_pf_error(struct kvm_vcpu *vcpu, gva_t gva, u16 error_c (PFERR_WRITE_MASK | PFERR_FETCH_MASK | PFERR_USER_MASK); if (!(error_code & PFERR_PRESENT_MASK) || - mmu->gva_to_gpa(vcpu, mmu, gva, access, &fault) != INVALID_GPA) { + mmu->w.gva_to_gpa(vcpu, &mmu->w, gva, access, &fault) != INVALID_GPA) { /* * If vcpu->arch.walk_mmu->gva_to_gpa succeeded, the page * tables probably do not match the TLB. Just proceed -- 2.52.0