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AJvYcCUNEluhUHD3+q1jJ7vD4ZgpXsvknwG1ZH7V5BSR7KGxIBmU26UkCv56f8YVH0R0YBT+i8w7Qf6csw==@kvack.org X-Gm-Message-State: AOJu0YzCuIp9FPn8xJtduWADib9iDsLhgOsfO75VSv/BJfNLYHyb3GKh MKXrbFhzpxnYJyYdulXtMPCFTFen0j49Dpf1TgMtL1jpQi6oW3zl3qK0BpSpWjqCxOGEVB+zUeQ joTAAqnXg3H+e8oAFVp2D0g== X-Google-Smtp-Source: AGHT+IEA8LrfLfFI8PpcjddLO/wbh1V8oxL5OnFdRpSUscIRk8byP+XixVrSrRP2XLlfKkrpW4t+rWo0H2IMHIeXcA== X-Received: from pjbqx15.prod.google.com ([2002:a17:90b:3e4f:b0:308:64ce:7274]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2dc2:b0:2ee:f687:6acb with SMTP id 98e67ed59e1d1-30e5158e007mr667015a91.13.1747266189745; Wed, 14 May 2025 16:43:09 -0700 (PDT) Date: Wed, 14 May 2025 16:41:47 -0700 In-Reply-To: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.49.0.1045.g170613ef41-goog Message-ID: <7ae972e602f94cef707ccb19b139638f4266d361.1747264138.git.ackerleytng@google.com> Subject: [RFC PATCH v2 08/51] KVM: selftests: Test flag validity after guest_memfd supports conversions From: Ackerley Tng To: kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-fsdevel@vger.kernel.org Cc: ackerleytng@google.com, aik@amd.com, ajones@ventanamicro.com, akpm@linux-foundation.org, amoorthy@google.com, anthony.yznaga@oracle.com, anup@brainfault.org, aou@eecs.berkeley.edu, bfoster@redhat.com, binbin.wu@linux.intel.com, brauner@kernel.org, catalin.marinas@arm.com, chao.p.peng@intel.com, chenhuacai@kernel.org, dave.hansen@intel.com, david@redhat.com, dmatlack@google.com, dwmw@amazon.co.uk, erdemaktas@google.com, fan.du@intel.com, fvdl@google.com, graf@amazon.com, haibo1.xu@intel.com, hch@infradead.org, hughd@google.com, ira.weiny@intel.com, isaku.yamahata@intel.com, jack@suse.cz, james.morse@arm.com, jarkko@kernel.org, jgg@ziepe.ca, jgowans@amazon.com, jhubbard@nvidia.com, jroedel@suse.de, jthoughton@google.com, jun.miao@intel.com, kai.huang@intel.com, keirf@google.com, kent.overstreet@linux.dev, kirill.shutemov@intel.com, liam.merwick@oracle.com, maciej.wieczor-retman@intel.com, mail@maciej.szmigiero.name, maz@kernel.org, mic@digikod.net, michael.roth@amd.com, mpe@ellerman.id.au, muchun.song@linux.dev, nikunj@amd.com, nsaenz@amazon.es, oliver.upton@linux.dev, palmer@dabbelt.com, pankaj.gupta@amd.com, paul.walmsley@sifive.com, pbonzini@redhat.com, pdurrant@amazon.co.uk, peterx@redhat.com, pgonda@google.com, pvorel@suse.cz, qperret@google.com, quic_cvanscha@quicinc.com, quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, quic_pderrin@quicinc.com, quic_pheragu@quicinc.com, quic_svaddagi@quicinc.com, quic_tsoni@quicinc.com, richard.weiyang@gmail.com, rick.p.edgecombe@intel.com, rientjes@google.com, roypat@amazon.co.uk, rppt@kernel.org, seanjc@google.com, shuah@kernel.org, steven.price@arm.com, steven.sistare@oracle.com, suzuki.poulose@arm.com, tabba@google.com, thomas.lendacky@amd.com, usama.arif@bytedance.com, vannapurve@google.com, vbabka@suse.cz, viro@zeniv.linux.org.uk, vkuznets@redhat.com, wei.w.wang@intel.com, will@kernel.org, willy@infradead.org, xiaoyao.li@intel.com, yan.y.zhao@intel.com, yilun.xu@intel.com, yuzenghui@huawei.com, zhiquan1.li@intel.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Queue-Id: E60461A0005 X-Rspamd-Server: rspam09 X-Stat-Signature: 6jn8bs4fqcah6b8bac6y9ioe59xmw3ob X-HE-Tag: 1747266190-463310 X-HE-Meta: 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 Zm23ZUEx 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Before guest_memfd supports conversions, Coco VMs must not allow GUEST_MEMFD_FLAG_SUPPORT_SHARED. Because this is a platform stability requirement for hosts supporting Coco VMs, this is an important test to retain. Change-Id: I7a42a7d22e96adf17db3dcaedac6b175a36a0eab Signed-off-by: Ackerley Tng --- .../testing/selftests/kvm/guest_memfd_test.c | 26 ++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/guest_memfd_test.c b/tools/testing/selftests/kvm/guest_memfd_test.c index bf2876cbd711..51d88acdf072 100644 --- a/tools/testing/selftests/kvm/guest_memfd_test.c +++ b/tools/testing/selftests/kvm/guest_memfd_test.c @@ -435,7 +435,8 @@ static void test_vm_type_gmem_flag_validity(unsigned long vm_type, for (flag = BIT(0); flag; flag <<= 1) { test_vm_with_gmem_flag(vm, flag, flag & expected_valid_flags); - if (flag == GUEST_MEMFD_FLAG_SUPPORT_SHARED) { + if (flag == GUEST_MEMFD_FLAG_SUPPORT_SHARED && + kvm_has_cap(KVM_CAP_GMEM_CONVERSION)) { test_vm_with_gmem_flag( vm, flag | GUEST_MEMFD_FLAG_INIT_PRIVATE, true); } @@ -444,7 +445,7 @@ static void test_vm_type_gmem_flag_validity(unsigned long vm_type, kvm_vm_release(vm); } -static void test_gmem_flag_validity(void) +static void test_gmem_flag_validity_without_conversion_cap(void) { uint64_t non_coco_vm_valid_flags = 0; @@ -462,11 +463,30 @@ static void test_gmem_flag_validity(void) #endif } +static void test_gmem_flag_validity(void) +{ + /* After conversions are supported, all VM types support shared mem. */ + uint64_t valid_flags = GUEST_MEMFD_FLAG_SUPPORT_SHARED; + + test_vm_type_gmem_flag_validity(VM_TYPE_DEFAULT, valid_flags); + +#ifdef __x86_64__ + test_vm_type_gmem_flag_validity(KVM_X86_SW_PROTECTED_VM, valid_flags); + test_vm_type_gmem_flag_validity(KVM_X86_SEV_VM, valid_flags); + test_vm_type_gmem_flag_validity(KVM_X86_SEV_ES_VM, valid_flags); + test_vm_type_gmem_flag_validity(KVM_X86_SNP_VM, valid_flags); + test_vm_type_gmem_flag_validity(KVM_X86_TDX_VM, valid_flags); +#endif +} + int main(int argc, char *argv[]) { TEST_REQUIRE(kvm_has_cap(KVM_CAP_GUEST_MEMFD)); - test_gmem_flag_validity(); + if (kvm_has_cap(KVM_CAP_GMEM_CONVERSION)) + test_gmem_flag_validity(); + else + test_gmem_flag_validity_without_conversion_cap(); test_with_type(VM_TYPE_DEFAULT, 0, false); if (kvm_has_cap(KVM_CAP_GMEM_SHARED_MEM)) { -- 2.49.0.1045.g170613ef41-goog