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AFNElJ+YYX0yl5iVc2UPBIiEqtnP6k1Tfs6l09GupF4Sfc9hg35QoLFGtkteY2L16mYL+JjS/OC/J5s8YquQ@lists.linux.dev X-Gm-Message-State: AOJu0YzEFM3ehwV7saAxLYyXCRwTO6H58p3hiXSn+y2qXHXveCJJkSnv WSwbfe11P4H4XN/xnkqYnZ+kSfIzg4YYHPSiu4fOJrHRJ0GRXDNxvMwlyfr1IEgscwp1DeVm9m/ t7IqroUIShsOohJ+oUBr0u3j9vw== X-Received: from pfje17.prod.google.com ([2002:a05:6a00:d1:b0:83a:d498:99fb]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:3944:b0:398:962e:83d7 with SMTP id adf61e73a8af0-3aa5a9df237mr10814249637.43.1778186078034; Thu, 07 May 2026 13:34:38 -0700 (PDT) Date: Thu, 7 May 2026 13:34:25 -0700 In-Reply-To: Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260507-gmem-inplace-conversion-v6-0-91ab5a8b19a4@google.com> X-Mailer: git-send-email 2.54.0.563.g4f69b47b94-goog Message-ID: <252ec123d00e4b60e1adb9ac5c84e0e4349fc488.1778185936.git.ackerleytng@google.com> Subject: [POC PATCH 4/5] KVM: selftests: Allow specifying CoCo-privateness while mapping a page From: Ackerley Tng To: devnull+ackerleytng.google.com@kernel.org Cc: ackerleytng@google.com, aik@amd.com, akpm@linux-foundation.org, andrew.jones@linux.dev, aneesh.kumar@kernel.org, axelrasmussen@google.com, baohua@kernel.org, bhe@redhat.com, binbin.wu@linux.intel.com, bp@alien8.de, brauner@kernel.org, chao.p.peng@linux.intel.com, chrisl@kernel.org, corbet@lwn.net, dave.hansen@linux.intel.com, david@kernel.org, forkloop@google.com, hpa@zytor.com, ira.weiny@intel.com, jgg@ziepe.ca, jmattson@google.com, jthoughton@google.com, kas@kernel.org, kasong@tencent.com, kvm@vger.kernel.org, liam@infradead.org, linux-coco@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, michael.roth@amd.com, mingo@redhat.com, nphamcs@gmail.com, oupton@kernel.org, pankaj.gupta@amd.com, pbonzini@redhat.com, pratyush@kernel.org, qi.zheng@linux.dev, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, rostedt@goodmis.org, seanjc@google.com, shakeel.butt@linux.dev, shikemeng@huaweicloud.com, shivankg@amd.com, shuah@kernel.org, skhan@linuxfoundation.org, steven.price@arm.com, suzuki.poulose@arm.com, tabba@google.com, tglx@kernel.org, vannapurve@google.com, vbabka@kernel.org, weixugc@google.com, willy@infradead.org, wyihan@google.com, x86@kernel.org, yan.y.zhao@intel.com, youngjun.park@lge.com, yuanchu@google.com Content-Type: text/plain; charset="UTF-8" Signed-off-by: Ackerley Tng --- tools/testing/selftests/kvm/include/x86/processor.h | 2 ++ tools/testing/selftests/kvm/lib/x86/processor.c | 13 ++++++++++--- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h index 77f576ee7789d..683f21452db58 100644 --- a/tools/testing/selftests/kvm/include/x86/processor.h +++ b/tools/testing/selftests/kvm/include/x86/processor.h @@ -1507,6 +1507,8 @@ enum pg_level { void tdp_mmu_init(struct kvm_vm *vm, int pgtable_levels, struct pte_masks *pte_masks); +void ___virt_pg_map(struct kvm_vm *vm, struct kvm_mmu *mmu, gva_t gva, + gpa_t gpa, int level, bool private); void __virt_pg_map(struct kvm_vm *vm, struct kvm_mmu *mmu, gva_t gva, gpa_t gpa, int level); void virt_map_level(struct kvm_vm *vm, gva_t gva, gpa_t gpa, diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testing/selftests/kvm/lib/x86/processor.c index b51467d70f6e7..02781194f51a2 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -256,8 +256,8 @@ static u64 *virt_create_upper_pte(struct kvm_vm *vm, return pte; } -void __virt_pg_map(struct kvm_vm *vm, struct kvm_mmu *mmu, gva_t gva, - gpa_t gpa, int level) +void ___virt_pg_map(struct kvm_vm *vm, struct kvm_mmu *mmu, gva_t gva, + gpa_t gpa, int level, bool private) { const u64 pg_size = PG_LEVEL_SIZE(level); u64 *pte = &mmu->pgd; @@ -309,12 +309,19 @@ void __virt_pg_map(struct kvm_vm *vm, struct kvm_mmu *mmu, gva_t gva, * Neither SEV nor TDX supports shared page tables, so only the final * leaf PTE needs manually set the C/S-bit. */ - if (vm_is_gpa_protected(vm, gpa)) + if (private) *pte |= PTE_C_BIT_MASK(mmu); else *pte |= PTE_S_BIT_MASK(mmu); } +void __virt_pg_map(struct kvm_vm *vm, struct kvm_mmu *mmu, gva_t gva, + gpa_t gpa, int level) +{ + ___virt_pg_map(vm, mmu, gva, gpa, level, + vm_is_gpa_protected(vm, gpa)); +} + void virt_arch_pg_map(struct kvm_vm *vm, gva_t gva, gpa_t gpa) { __virt_pg_map(vm, &vm->mmu, gva, gpa, PG_LEVEL_4K); -- 2.54.0.563.g4f69b47b94-goog