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a=ed25519-sha256; t=1774563861; l=1225; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=/YIcGPcW7wZJhSlI+0RZdLWi/pX7t9Ru6z34+pKDs+U=; b=nilaAfO0iV6blJ3/Lyvhk7nxY4Fc9srAhxHYkSRRNw5e5PdyvPo5CFKL2qtZRMYmb7vAg9rSY 2VuzYa5m/+5CmT3FIb6yGX1IS4Jrr+PUe0wpNjgsMrimNMuC1aNLWIo X-Mailer: b4 0.14.3 Message-ID: <20260326-gmem-inplace-conversion-v4-43-e202fe950ffd@google.com> Subject: [PATCH RFC v4 43/44] KVM: selftests: Update pre-fault test to work with per-guest_memfd attributes From: Ackerley Tng To: aik@amd.com, andrew.jones@linux.dev, binbin.wu@linux.intel.com, brauner@kernel.org, chao.p.peng@linux.intel.com, david@kernel.org, ira.weiny@intel.com, jmattson@google.com, jroedel@suse.de, jthoughton@google.com, michael.roth@amd.com, oupton@kernel.org, pankaj.gupta@amd.com, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, shivankg@amd.com, steven.price@arm.com, tabba@google.com, willy@infradead.org, wyihan@google.com, yan.y.zhao@intel.com, forkloop@google.com, pratyush@kernel.org, suzuki.poulose@arm.com, aneesh.kumar@kernel.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , Shuah Khan , Vishal Annapurve , Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Jason Gunthorpe , Vlastimil Babka Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, Ackerley Tng Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Sean Christopherson Skip setting memory to private in the pre-fault memory test when using per-gmem memory attributes, as memory is initialized to private by default for guest_memfd, and using vm_mem_set_private() on a guest_memfd instance requires creating guest_memfd with GUEST_MEMFD_FLAG_MMAP (which is totally doable, but would need to be conditional and is ultimately unnecessary). Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/pre_fault_memory_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/pre_fault_memory_test.c b/tools/te= sting/selftests/kvm/pre_fault_memory_test.c index 3b2c4179d42ee..7b7352487fe12 100644 --- a/tools/testing/selftests/kvm/pre_fault_memory_test.c +++ b/tools/testing/selftests/kvm/pre_fault_memory_test.c @@ -187,7 +187,7 @@ static void __test_pre_fault_memory(unsigned long vm_ty= pe, bool private) TEST_NPAGES, private ? KVM_MEM_GUEST_MEMFD : 0); virt_map(vm, gva, gpa, TEST_NPAGES); =20 - if (private) + if (!kvm_has_gmem_attributes && private) vm_mem_set_private(vm, gpa, TEST_SIZE, 0); =20 pre_fault_memory(vcpu, gpa, 0, SZ_2M, 0, private); --=20 2.53.0.1018.g2bb0e51243-goog