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Wed, 18 Aug 2021 16:55:56 +0000 From: Wei Huang To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, pbonzini@redhat.com, vkuznets@redhat.com, seanjc@google.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, wei.huang2@amd.com Subject: [PATCH v3 0/3] SVM 5-level page table support Date: Wed, 18 Aug 2021 11:55:46 -0500 Message-Id: <20210818165549.3771014-1-wei.huang2@amd.com> X-Mailer: git-send-email 2.31.1 Content-Transfer-Encoding: 7bit Content-Type: text/plain X-ClientProxiedBy: SA0PR12CA0006.namprd12.prod.outlook.com (2603:10b6:806:6f::11) To DM5PR1201MB0201.namprd12.prod.outlook.com (2603:10b6:4:5b::21) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from weiserver.amd.com (165.204.77.1) by SA0PR12CA0006.namprd12.prod.outlook.com (2603:10b6:806:6f::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.19 via Frontend Transport; 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When the 5-level page table is enabled on host OS, the nested page table for guest VMs will use the same format as host OS (i.e. 5-level NPT). These patches were tested with various combination of different settings and test cases (nested/regular VMs, AMD64/i686 kernels, kvm-unit-tests, etc.) v2->v3: * Change the way of building root_hpa by following the existing flow (Sean) v1->v2: * Remove v1's arch-specific get_tdp_level() and add a new parameter, tdp_forced_root_level, to allow forced TDP level (Sean) * Add additional comment on tdp_root table chaining trick and change the PML root table allocation code (Sean) * Revise Patch 1's commit msg (Sean and Jim) Thanks, -Wei Wei Huang (3): KVM: x86: Allow CPU to force vendor-specific TDP level KVM: x86: Handle the case of 5-level shadow page table KVM: SVM: Add 5-level page table support for SVM arch/x86/include/asm/kvm_host.h | 6 ++-- arch/x86/kvm/mmu/mmu.c | 56 ++++++++++++++++++++++----------- arch/x86/kvm/svm/svm.c | 13 ++++---- arch/x86/kvm/vmx/vmx.c | 3 +- 4 files changed, 49 insertions(+), 29 deletions(-) -- 2.31.1