From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFE7FC433F5 for ; Thu, 19 May 2022 13:47:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239016AbiESNrN (ORCPT ); Thu, 19 May 2022 09:47:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232234AbiESNqT (ORCPT ); Thu, 19 May 2022 09:46:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 962FE11A24 for ; Thu, 19 May 2022 06:46:04 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0E1F8617C1 for ; Thu, 19 May 2022 13:46:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3F12C36AE3; Thu, 19 May 2022 13:45:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652967963; bh=7ZFIfc31Ljwo59UHFdAV6Hez2rIIXtc9xnETxzvgDvc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hNozO7SAuAmOJdzhDHTWB9npt/YWIKfntAwQlt+/2AvOsFzCQNebP/51xqpn41wk1 96KzcgKZXipkIg24qNupD07sJ2r64RuIRxqqo1tJ2a32q2UXrSAldrnfIb98VURoY5 YUYDNmr873wEVy0bboxF855tUenGFoqND3EUw0sweETF5f59IHlF51rMLc61GSPmvT WPb1ZTT5+2GypfGQPtEo94PyYFeAAyMP4yA+Gg6VuN1n8ZAyngEJ+zHZK0izgZbvRi W8oSNpgO9c0UAULEJ5YJQY0ncWOdyZtoKVrCaIJwwq6kStQ/pz+YT2diOGExHV+yM/ nfjt/yA+6Accw== From: Will Deacon To: kvmarm@lists.cs.columbia.edu Cc: Will Deacon , Ard Biesheuvel , Sean Christopherson , Alexandru Elisei , Andy Lutomirski , Catalin Marinas , James Morse , Chao Peng , Quentin Perret , Suzuki K Poulose , Michael Roth , Mark Rutland , Fuad Tabba , Oliver Upton , Marc Zyngier , kernel-team@android.com, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 55/89] KVM: arm64: Do not pass the vcpu to __pkvm_host_map_guest() Date: Thu, 19 May 2022 14:41:30 +0100 Message-Id: <20220519134204.5379-56-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220519134204.5379-1-will@kernel.org> References: <20220519134204.5379-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Fuad Tabba __pkvm_host_map_guest() always applies to the loaded vcpu in hyp, and should not trust the host to provide the vcpu. Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/nvhe/hyp-main.c | 15 ++++----------- arch/arm64/kvm/mmu.c | 6 +++--- 2 files changed, 7 insertions(+), 14 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index e82c0faf6c81..0f1c9d27f6eb 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -445,20 +445,15 @@ static void handle___pkvm_host_map_guest(struct kvm_cpu_context *host_ctxt) { DECLARE_REG(u64, pfn, host_ctxt, 1); DECLARE_REG(u64, gfn, host_ctxt, 2); - DECLARE_REG(struct kvm_vcpu *, host_vcpu, host_ctxt, 3); - struct kvm_shadow_vcpu_state *shadow_state; + struct kvm_vcpu *host_vcpu; struct kvm_vcpu *shadow_vcpu; - struct kvm *host_kvm; - unsigned int handle; + struct kvm_shadow_vcpu_state *shadow_state; int ret = -EINVAL; if (!is_protected_kvm_enabled()) goto out; - host_vcpu = kern_hyp_va(host_vcpu); - host_kvm = kern_hyp_va(host_vcpu->kvm); - handle = host_kvm->arch.pkvm.shadow_handle; - shadow_state = pkvm_load_shadow_vcpu_state(handle, host_vcpu->vcpu_idx); + shadow_state = pkvm_loaded_shadow_vcpu_state(); if (!shadow_state) goto out; @@ -468,11 +463,9 @@ static void handle___pkvm_host_map_guest(struct kvm_cpu_context *host_ctxt) /* Topup shadow memcache with the host's */ ret = pkvm_refill_memcache(shadow_vcpu, host_vcpu); if (ret) - goto out_put_state; + goto out; ret = __pkvm_host_share_guest(pfn, gfn, shadow_vcpu); -out_put_state: - pkvm_put_shadow_vcpu_state(shadow_state); out: cpu_reg(host_ctxt, 1) = ret; } diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index c74c431588a3..137d4382ed1c 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1143,9 +1143,9 @@ static int sanitise_mte_tags(struct kvm *kvm, kvm_pfn_t pfn, return 0; } -static int pkvm_host_map_guest(u64 pfn, u64 gfn, struct kvm_vcpu *vcpu) +static int pkvm_host_map_guest(u64 pfn, u64 gfn) { - int ret = kvm_call_hyp_nvhe(__pkvm_host_map_guest, pfn, gfn, vcpu); + int ret = kvm_call_hyp_nvhe(__pkvm_host_map_guest, pfn, gfn); /* * Getting -EPERM at this point implies that the pfn has already been @@ -1211,7 +1211,7 @@ static int pkvm_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, write_lock(&kvm->mmu_lock); pfn = page_to_pfn(page); - ret = pkvm_host_map_guest(pfn, fault_ipa >> PAGE_SHIFT, vcpu); + ret = pkvm_host_map_guest(pfn, fault_ipa >> PAGE_SHIFT); if (ret) { if (ret == -EAGAIN) ret = 0; -- 2.36.1.124.g0e6072fb45-goog From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2182C47080 for ; Thu, 19 May 2022 13:46:10 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 57DB44B448; Thu, 19 May 2022 09:46:10 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@kernel.org Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aBTbRqyZBW1h; 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Thu, 19 May 2022 13:45:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652967963; bh=7ZFIfc31Ljwo59UHFdAV6Hez2rIIXtc9xnETxzvgDvc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hNozO7SAuAmOJdzhDHTWB9npt/YWIKfntAwQlt+/2AvOsFzCQNebP/51xqpn41wk1 96KzcgKZXipkIg24qNupD07sJ2r64RuIRxqqo1tJ2a32q2UXrSAldrnfIb98VURoY5 YUYDNmr873wEVy0bboxF855tUenGFoqND3EUw0sweETF5f59IHlF51rMLc61GSPmvT WPb1ZTT5+2GypfGQPtEo94PyYFeAAyMP4yA+Gg6VuN1n8ZAyngEJ+zHZK0izgZbvRi W8oSNpgO9c0UAULEJ5YJQY0ncWOdyZtoKVrCaIJwwq6kStQ/pz+YT2diOGExHV+yM/ nfjt/yA+6Accw== From: Will Deacon To: kvmarm@lists.cs.columbia.edu Subject: [PATCH 55/89] KVM: arm64: Do not pass the vcpu to __pkvm_host_map_guest() Date: Thu, 19 May 2022 14:41:30 +0100 Message-Id: <20220519134204.5379-56-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220519134204.5379-1-will@kernel.org> References: <20220519134204.5379-1-will@kernel.org> MIME-Version: 1.0 Cc: Marc Zyngier , kernel-team@android.com, kvm@vger.kernel.org, Andy Lutomirski , linux-arm-kernel@lists.infradead.org, Michael Roth , Catalin Marinas , Chao Peng , Will Deacon X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu From: Fuad Tabba __pkvm_host_map_guest() always applies to the loaded vcpu in hyp, and should not trust the host to provide the vcpu. Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/nvhe/hyp-main.c | 15 ++++----------- arch/arm64/kvm/mmu.c | 6 +++--- 2 files changed, 7 insertions(+), 14 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index e82c0faf6c81..0f1c9d27f6eb 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -445,20 +445,15 @@ static void handle___pkvm_host_map_guest(struct kvm_cpu_context *host_ctxt) { DECLARE_REG(u64, pfn, host_ctxt, 1); DECLARE_REG(u64, gfn, host_ctxt, 2); - DECLARE_REG(struct kvm_vcpu *, host_vcpu, host_ctxt, 3); - struct kvm_shadow_vcpu_state *shadow_state; + struct kvm_vcpu *host_vcpu; struct kvm_vcpu *shadow_vcpu; - struct kvm *host_kvm; - unsigned int handle; + struct kvm_shadow_vcpu_state *shadow_state; int ret = -EINVAL; if (!is_protected_kvm_enabled()) goto out; - host_vcpu = kern_hyp_va(host_vcpu); - host_kvm = kern_hyp_va(host_vcpu->kvm); - handle = host_kvm->arch.pkvm.shadow_handle; - shadow_state = pkvm_load_shadow_vcpu_state(handle, host_vcpu->vcpu_idx); + shadow_state = pkvm_loaded_shadow_vcpu_state(); if (!shadow_state) goto out; @@ -468,11 +463,9 @@ static void handle___pkvm_host_map_guest(struct kvm_cpu_context *host_ctxt) /* Topup shadow memcache with the host's */ ret = pkvm_refill_memcache(shadow_vcpu, host_vcpu); if (ret) - goto out_put_state; + goto out; ret = __pkvm_host_share_guest(pfn, gfn, shadow_vcpu); -out_put_state: - pkvm_put_shadow_vcpu_state(shadow_state); out: cpu_reg(host_ctxt, 1) = ret; } diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index c74c431588a3..137d4382ed1c 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1143,9 +1143,9 @@ static int sanitise_mte_tags(struct kvm *kvm, kvm_pfn_t pfn, return 0; } -static int pkvm_host_map_guest(u64 pfn, u64 gfn, struct kvm_vcpu *vcpu) +static int pkvm_host_map_guest(u64 pfn, u64 gfn) { - int ret = kvm_call_hyp_nvhe(__pkvm_host_map_guest, pfn, gfn, vcpu); + int ret = kvm_call_hyp_nvhe(__pkvm_host_map_guest, pfn, gfn); /* * Getting -EPERM at this point implies that the pfn has already been @@ -1211,7 +1211,7 @@ static int pkvm_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, write_lock(&kvm->mmu_lock); pfn = page_to_pfn(page); - ret = pkvm_host_map_guest(pfn, fault_ipa >> PAGE_SHIFT, vcpu); + ret = pkvm_host_map_guest(pfn, fault_ipa >> PAGE_SHIFT); if (ret) { if (ret == -EAGAIN) ret = 0; -- 2.36.1.124.g0e6072fb45-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BB3A9C433F5 for ; Thu, 19 May 2022 14:26:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Thu, 19 May 2022 13:46:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3F12C36AE3; Thu, 19 May 2022 13:45:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652967963; bh=7ZFIfc31Ljwo59UHFdAV6Hez2rIIXtc9xnETxzvgDvc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hNozO7SAuAmOJdzhDHTWB9npt/YWIKfntAwQlt+/2AvOsFzCQNebP/51xqpn41wk1 96KzcgKZXipkIg24qNupD07sJ2r64RuIRxqqo1tJ2a32q2UXrSAldrnfIb98VURoY5 YUYDNmr873wEVy0bboxF855tUenGFoqND3EUw0sweETF5f59IHlF51rMLc61GSPmvT WPb1ZTT5+2GypfGQPtEo94PyYFeAAyMP4yA+Gg6VuN1n8ZAyngEJ+zHZK0izgZbvRi W8oSNpgO9c0UAULEJ5YJQY0ncWOdyZtoKVrCaIJwwq6kStQ/pz+YT2diOGExHV+yM/ nfjt/yA+6Accw== From: Will Deacon To: kvmarm@lists.cs.columbia.edu Cc: Will Deacon , Ard Biesheuvel , Sean Christopherson , Alexandru Elisei , Andy Lutomirski , Catalin Marinas , James Morse , Chao Peng , Quentin Perret , Suzuki K Poulose , Michael Roth , Mark Rutland , Fuad Tabba , Oliver Upton , Marc Zyngier , kernel-team@android.com, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 55/89] KVM: arm64: Do not pass the vcpu to __pkvm_host_map_guest() Date: Thu, 19 May 2022 14:41:30 +0100 Message-Id: <20220519134204.5379-56-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220519134204.5379-1-will@kernel.org> References: <20220519134204.5379-1-will@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220519_064606_508087_E2CF648D X-CRM114-Status: GOOD ( 16.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Fuad Tabba __pkvm_host_map_guest() always applies to the loaded vcpu in hyp, and should not trust the host to provide the vcpu. Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/nvhe/hyp-main.c | 15 ++++----------- arch/arm64/kvm/mmu.c | 6 +++--- 2 files changed, 7 insertions(+), 14 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index e82c0faf6c81..0f1c9d27f6eb 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -445,20 +445,15 @@ static void handle___pkvm_host_map_guest(struct kvm_cpu_context *host_ctxt) { DECLARE_REG(u64, pfn, host_ctxt, 1); DECLARE_REG(u64, gfn, host_ctxt, 2); - DECLARE_REG(struct kvm_vcpu *, host_vcpu, host_ctxt, 3); - struct kvm_shadow_vcpu_state *shadow_state; + struct kvm_vcpu *host_vcpu; struct kvm_vcpu *shadow_vcpu; - struct kvm *host_kvm; - unsigned int handle; + struct kvm_shadow_vcpu_state *shadow_state; int ret = -EINVAL; if (!is_protected_kvm_enabled()) goto out; - host_vcpu = kern_hyp_va(host_vcpu); - host_kvm = kern_hyp_va(host_vcpu->kvm); - handle = host_kvm->arch.pkvm.shadow_handle; - shadow_state = pkvm_load_shadow_vcpu_state(handle, host_vcpu->vcpu_idx); + shadow_state = pkvm_loaded_shadow_vcpu_state(); if (!shadow_state) goto out; @@ -468,11 +463,9 @@ static void handle___pkvm_host_map_guest(struct kvm_cpu_context *host_ctxt) /* Topup shadow memcache with the host's */ ret = pkvm_refill_memcache(shadow_vcpu, host_vcpu); if (ret) - goto out_put_state; + goto out; ret = __pkvm_host_share_guest(pfn, gfn, shadow_vcpu); -out_put_state: - pkvm_put_shadow_vcpu_state(shadow_state); out: cpu_reg(host_ctxt, 1) = ret; } diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index c74c431588a3..137d4382ed1c 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1143,9 +1143,9 @@ static int sanitise_mte_tags(struct kvm *kvm, kvm_pfn_t pfn, return 0; } -static int pkvm_host_map_guest(u64 pfn, u64 gfn, struct kvm_vcpu *vcpu) +static int pkvm_host_map_guest(u64 pfn, u64 gfn) { - int ret = kvm_call_hyp_nvhe(__pkvm_host_map_guest, pfn, gfn, vcpu); + int ret = kvm_call_hyp_nvhe(__pkvm_host_map_guest, pfn, gfn); /* * Getting -EPERM at this point implies that the pfn has already been @@ -1211,7 +1211,7 @@ static int pkvm_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, write_lock(&kvm->mmu_lock); pfn = page_to_pfn(page); - ret = pkvm_host_map_guest(pfn, fault_ipa >> PAGE_SHIFT, vcpu); + ret = pkvm_host_map_guest(pfn, fault_ipa >> PAGE_SHIFT); if (ret) { if (ret == -EAGAIN) ret = 0; -- 2.36.1.124.g0e6072fb45-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel