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Thu, 28 Aug 2025 09:39:29 +0000 Received: from EX19D015EUB004.ant.amazon.com ([fe80::2dc9:7aa9:9cd3:fc8a]) by EX19D015EUB004.ant.amazon.com ([fe80::2dc9:7aa9:9cd3:fc8a%3]) with mapi id 15.02.2562.017; Thu, 28 Aug 2025 09:39:29 +0000 From: "Roy, Patrick" To: "david@redhat.com" , "seanjc@google.com" CC: "Roy, Patrick" , "tabba@google.com" , "ackerleytng@google.com" , "pbonzini@redhat.com" , "kvm@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "kvmarm@lists.linux.dev" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "rppt@kernel.org" , "will@kernel.org" , "vbabka@suse.cz" , "Cali, Marco" , "Kalyazin, Nikita" , "Thomson, Jack" , "Manwaring, Derek" Subject: [PATCH v5 10/12] KVM: selftests: cover GUEST_MEMFD_FLAG_NO_DIRECT_MAP in mem conversion tests Thread-Topic: [PATCH v5 10/12] KVM: selftests: cover GUEST_MEMFD_FLAG_NO_DIRECT_MAP in mem conversion tests Thread-Index: AQHcF/+mcpyXe48FIE+SGIUwj8fMnw== Date: Thu, 28 Aug 2025 09:39:29 +0000 Message-ID: <20250828093902.2719-11-roypat@amazon.co.uk> References: <20250828093902.2719-1-roypat@amazon.co.uk> In-Reply-To: <20250828093902.2719-1-roypat@amazon.co.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.19.88.180] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250828_103935_947917_88B7DE70 X-CRM114-Status: UNSURE ( 7.79 ) X-CRM114-Notice: Please train this message. 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 Cover the scenario that the guest can fault in and write gmem-backed=0A= guest memory even if its direct map removed.=0A= =0A= Signed-off-by: Patrick Roy =0A= ---=0A= .../selftests/kvm/x86/private_mem_conversions_test.c | 7 ++++---=0A= 1 file changed, 4 insertions(+), 3 deletions(-)=0A= =0A= diff --git a/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c= b/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c=0A= index 82a8d88b5338..8427d9fbdb23 100644=0A= --- a/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c=0A= +++ b/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c=0A= @@ -367,7 +367,7 @@ static void *__test_mem_conversions(void *__vcpu)=0A= }=0A= =0A= static void test_mem_conversions(enum vm_mem_backing_src_type src_type, ui= nt32_t nr_vcpus,=0A= - uint32_t nr_memslots)=0A= + uint32_t nr_memslots, uint64_t gmem_flags)=0A= {=0A= /*=0A= * Allocate enough memory so that each vCPU's chunk of memory can be=0A= @@ -394,7 +394,7 @@ static void test_mem_conversions(enum vm_mem_backing_sr= c_type src_type, uint32_t=0A= =0A= vm_enable_cap(vm, KVM_CAP_EXIT_HYPERCALL, (1 << KVM_HC_MAP_GPA_RANGE));= =0A= =0A= - memfd =3D vm_create_guest_memfd(vm, memfd_size, 0);=0A= + memfd =3D vm_create_guest_memfd(vm, memfd_size, gmem_flags);=0A= =0A= for (i =3D 0; i < nr_memslots; i++)=0A= vm_mem_add(vm, src_type, BASE_DATA_GPA + slot_size * i,=0A= @@ -477,7 +477,8 @@ int main(int argc, char *argv[])=0A= }=0A= }=0A= =0A= - test_mem_conversions(src_type, nr_vcpus, nr_memslots);=0A= + test_mem_conversions(src_type, nr_vcpus, nr_memslots, 0);=0A= + test_mem_conversions(src_type, nr_vcpus, nr_memslots, GUEST_MEMFD_FLAG_NO= _DIRECT_MAP);=0A= =0A= return 0;=0A= }=0A= -- =0A= 2.50.1=0A= =0A=