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AHgh+Rrx78ud653PmmuMiLMPUMDyUaE1ZPukEeRfDN4XdtEYZtul+XgyTG+76N5Ad0D5M9IxRfCOTks+IwWY@lists.linux.dev X-Gm-Message-State: AOJu0Yz+ru663+OMv9DGKT6Tf+j6Czaf+tTQITi47BmU4CmglBwjyJ+D xxMVaGYhvaKS+zFEUIH7I5X1nrMP2qWLHcthYutUGTN3HFWYLGuh+4M8/5xRfwzRfJHTbJBLrYU FjqZzpQ== X-Received: from pjvc8.prod.google.com ([2002:a17:90a:d908:b0:380:64e0:790e]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:3810:b0:36d:ae6a:22fe with SMTP id 98e67ed59e1d1-3808bfce9f7mr1673537a91.16.1782855433058; Tue, 30 Jun 2026 14:37:13 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 30 Jun 2026 14:37:09 -0700 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260630213711.479692-1-seanjc@google.com> Subject: [PATCH v2 0/2] KVM: x86: gmem populate fix and cleanups From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini , Kiryl Shutsemau Cc: Dave Hansen , Rick Edgecombe , kvm@vger.kernel.org, x86@kernel.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, Sashiko Bot , Joerg Roedel , Yan Zhao , Ackerley Tng Content-Type: text/plain; charset="UTF-8" Fix a user-triggerable WARN due to KVM not pre-checking that userspace provided a source page for non-ZERO pages for SNP_LAUNCH_UPDATE, and then clean up the equivalent TDX code to also explicitly check the incoming source page *before* calling into guest_memfd, and to return -EINVAL, not -EOPNOTSUPP. v2: - Rewrite the SNP patch changelog. - Tweak the code to avoid checking KVM_SEV_SNP_PAGE_TYPE_ZERO twice. - Drop what is now effectively a sanity check in sev_gmem_post_populate(), so that we don't have to duplicate the logic when in-place conversion comes along. - Tack on the TDX change. v1: https://lore.kernel.org/all/20260623091556.1500930-2-joro@8bytes.org Joerg Roedel (1): KVM: SEV: Explicitly disallow NULL user address for SNP_LAUNCH_UPDATE Sean Christopherson (1): KVM: TDX: Return EINVAL, not EOPNOTSUPP, for NULL INIT_MEM_REGION source arch/x86/kvm/svm/sev.c | 11 +++++------ arch/x86/kvm/vmx/tdx.c | 7 ++----- 2 files changed, 7 insertions(+), 11 deletions(-) base-commit: a204badd8432f93b7e862e7dac6db0fe3d65f370 -- 2.55.0.rc0.799.gd6f94ed593-goog