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a=ed25519-sha256; t=1787735885; l=1236; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=x4GiehEvwthbo+pCvL6V9adeW5xOS5C7xTsIhL+6Zek=; b=s+IQgM8B+Ybq43NAJgLoaKZkS9bVwFm6R6sUMh7Ta7t1ZqeXaVdBjvNLlZzPswTgV7Us8uM7H f7uNAG5zSptDljo14pDwFoYLa2yBFAGT9eOULI9I1qN+OBHVWQBkK3T X-Mailer: b4 0.16.0 Message-ID: <20260826-gmem-inplace-conversion-v11-2-0a15d8a799aa@google.com> Subject: [PATCH v11 02/46] KVM: guest_memfd: Use kvm_mem_is_private() when populating guest_memfd memory 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, jmattson@google.com, 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, 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, liam@infradead.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 , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Baoquan He , Jason Gunthorpe , John Hubbard , Peter Xu , tarunsahu@google.com, Fuad Tabba , 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, linux-coco@lists.linux.dev, Ackerley Tng , Xiaoyao Li , Fuad Tabba Content-Type: text/plain; charset="utf-8" From: Sean Christopherson Use kvm_mem_is_private() when populating guest_memfd instead of using an open coded equivalent. In addition to simplifying the populate code *now*, this avoids the need to provide a range-based gmem lookup API in the future as well. No functional change intended. Signed-off-by: Sean Christopherson Suggested-by: Xiaoyao Li Reviewed-by: Xiaoyao Li Reviewed-by: Binbin Wu Reviewed-by: Fuad Tabba Signed-off-by: Ackerley Tng --- virt/kvm/guest_memfd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index 8f8e5b6b70134..2c5857a73ec94 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -805,9 +805,7 @@ static long __kvm_gmem_populate(struct kvm *kvm, struct kvm_memory_slot *slot, folio_unlock(folio); - if (!kvm_range_has_memory_attributes(kvm, gfn, gfn + 1, - KVM_MEMORY_ATTRIBUTE_PRIVATE, - KVM_MEMORY_ATTRIBUTE_PRIVATE)) { + if (!kvm_mem_is_private(kvm, gfn)) { ret = -EINVAL; goto out_put_folio; } -- 2.55.0.887.g758fc8c411-goog