From patchwork Thu Dec 8 19:38:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Matlack X-Patchwork-Id: 13068790 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 ACA87C4332F for ; Thu, 8 Dec 2022 19:48:05 +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:Cc:To:From:Subject:Message-ID: References:Mime-Version:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=txZbBiw5mH0j1r4a9zMkYEQmCssfTfVmNDQWkuVolYA=; b=tLGi+1SXgRcCsOuNdRQ8zzitI/ tzmhlrM/7xvQk3ysmV3kEabnoNFvwdjD5R8eKp1TZb/SPikTBba2vJ4d/Jc2V9Jvn6WZ7wurGI9eO JITaxZGBkt94VU0V9hFgkjEkG6M1M5u1yZeNTUMlfmljrNL0z3AdoiuUzREZKKSrnrDe5awD/5Az9 /tNOTcZK+rsG8WC54ZDN6nQNlZPRcjBAkzLF8BzbLpd6s/vruQcKsIAN9s4onVfxZPGVuH8pMTM0r FUsauOcRMTM4j3xZvUGBpppZLvI484dL0pUMCCbLgQ/vXBal7fbPSnIZLp/SACN8LNTTbg49DQuaI lHO5Ahiw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p3Mr1-00A1cs-IO; Thu, 08 Dec 2022 19:46:48 +0000 Received: from mail-yw1-x1149.google.com ([2607:f8b0:4864:20::1149]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p3MqX-00A1FV-CS for linux-arm-kernel@lists.infradead.org; Thu, 08 Dec 2022 19:46:19 +0000 Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-3cf0762f741so25070797b3.16 for ; Thu, 08 Dec 2022 11:46:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=PeJRMD1iiEfAcW0wse8YvMRXDysx/LxLCpDqGqOGbOE=; b=it3ha/1H2vQVcMvrwLK2XI6kFW9SfZwdQ0HxxUSc3Ag107nHhiqTSUqlouPQ69hlpA gVlMznc/cXRCFulmlBil4kKdWgDSAUCR93SntgLaDJWCpUTB7FzwaETswPW9lX1yNG07 0tWWOwYFihDwyLqkpiOMrsIryZ3SjYTTI8b4R1X9oFZnj7/UyRLh3XP6ECDzERPz2C+i B3prUkRr3KEH0wVuRrtyBo09IY2F7MxhaUoLo7LOK5D3eYUuVBFYj36vL7P7ZiNQEA7c 1QUJk9A2erTf8dkQPtJhbcBzs55NBkUNAK3ruLZHLQeHsz23ls2YGKCDBr5v8J7edZjj uhPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=PeJRMD1iiEfAcW0wse8YvMRXDysx/LxLCpDqGqOGbOE=; b=gh/70E6lf7yzpmZlm4WK6rSr3AFxqkHIgaLVYGEfHGpuGUgTt9H5I1YN1BCgHyh+VJ JzSeLcIADZUu3hVGD0NgQlGGxHdVHRfVdXYzOhX+S9qfB61gu77Oc7ROxml3Nt2g4P3o nIpPjJWUizONwIgFLWyPHmwbEwdMhDujHfeOVnGaNzghocYuYR2JdMNfI5QQK8lvzm7n iY4laWY/u7osMgxnT3dLtXj6O6SvhhnK031b3YjoD0vpYaxA7+KIMdO4crPn1QE0eO6v V3rP6wOGnxNec7vHLsX0qy68CZpSICQvjP0WqR5eRaodLsk1wBIL8Hv0dYl6x2mw9Y3l eHqQ== X-Gm-Message-State: ANoB5pkMlTSQ/wWlVuKLPDIGXsXIibTMU/W0UhYlkuOf3Y7Xh82LW+e7 cX5Eko1r4MUrLIeV/hb0sJKM3oELiNUuOQ== X-Google-Smtp-Source: AA0mqf42i4HuA7nX3hyDm6T4qhjEe3EzuwVfCeNTiMqXBDpZ0EVA3TMnNfFvR5iVyImke8GmCkOtSd5OsKu+oA== X-Received: from dmatlack-n2d-128.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:1309]) (user=dmatlack job=sendgmr) by 2002:a25:6602:0:b0:6f9:890c:6468 with SMTP id a2-20020a256602000000b006f9890c6468mr39021311ybc.610.1670528389040; Thu, 08 Dec 2022 11:39:49 -0800 (PST) Date: Thu, 8 Dec 2022 11:38:45 -0800 In-Reply-To: <20221208193857.4090582-1-dmatlack@google.com> Mime-Version: 1.0 References: <20221208193857.4090582-1-dmatlack@google.com> X-Mailer: git-send-email 2.39.0.rc1.256.g54fd8350bd-goog Message-ID: <20221208193857.4090582-26-dmatlack@google.com> Subject: [RFC PATCH 25/37] KVM: x86/mmu: Pass root role to kvm_tdp_mmu_get_vcpu_root_hpa() From: David Matlack To: Paolo Bonzini Cc: Marc Zyngier , James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Huacai Chen , Aleksandar Markovic , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Andrew Morton , David Matlack , Anshuman Khandual , Nadav Amit , "Matthew Wilcox (Oracle)" , Vlastimil Babka , "Liam R. Howlett" , Suren Baghdasaryan , Peter Xu , xu xin , Arnd Bergmann , Yu Zhao , Colin Cross , Hugh Dickins , Ben Gardon , Mingwei Zhang , Krish Sadhukhan , Ricardo Koller , Jing Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221208_114617_444098_AB98445B X-CRM114-Status: GOOD ( 13.64 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Pass the root role from the caller rather than grabbing it from vcpu->arch.mmu. This will enable the TDP MMU to be moved to common code in a future commit by removing a dependency on vcpu->arch. No functional change intended. Signed-off-by: David Matlack --- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/mmu/tdp_mmu.c | 4 ++-- arch/x86/kvm/mmu/tdp_mmu.h | 3 ++- 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 9307608ae975..aea7df3c2dcb 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -3612,7 +3612,7 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu) goto out_unlock; if (tdp_mmu_enabled) { - root = kvm_tdp_mmu_get_vcpu_root_hpa(vcpu); + root = kvm_tdp_mmu_get_vcpu_root_hpa(vcpu, mmu->root_role); mmu->root.hpa = root; } else if (shadow_root_level >= PT64_ROOT_4LEVEL) { root = mmu_alloc_root(vcpu, 0, 0, shadow_root_level); diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index e6708829714c..c5d1c9010d21 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -301,9 +301,9 @@ static void tdp_mmu_init_child_sp(struct kvm_mmu_page *child_sp, tdp_mmu_init_sp(child_sp, iter->sptep, iter->gfn, role); } -hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu) +hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu, + union kvm_mmu_page_role role) { - union kvm_mmu_page_role role = vcpu->arch.mmu->root_role; struct kvm *kvm = vcpu->kvm; struct kvm_mmu_page *root; diff --git a/arch/x86/kvm/mmu/tdp_mmu.h b/arch/x86/kvm/mmu/tdp_mmu.h index e6a929089715..897608be7f75 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.h +++ b/arch/x86/kvm/mmu/tdp_mmu.h @@ -10,7 +10,8 @@ int kvm_mmu_init_tdp_mmu(struct kvm *kvm); void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm); -hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu); +hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu, + union kvm_mmu_page_role role); __must_check static inline bool kvm_tdp_mmu_get_root(struct kvm_mmu_page *root) {