From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A2F427A907; Mon, 31 Aug 2026 00:25:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788135920; cv=none; b=PCut52w2dw3UiY6xX3jTqwbkmUJ83WkdTmXpK6RRGYrHAkM41hIQWSnbvRJTMERLR2EhdqIEzncBKbD7KLkCKH6W+LJdQTvrV2DNggR+fLdb/0AcW+0jB1KUQdvgFY0rKpL6ADpRBScvQhnafLkpcnjiUDgKnILGN2mbLs8oW0U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788135920; c=relaxed/simple; bh=yiocxA49550KUCzo+T/5GJg/8zdJWfhnYG1cFdaaNSU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OO8WBvGnhUrx73Jh8bInnr5bimPxzQQpOphOKDAlccrGoEs+aBGf/Y+A89mJUWdvkmo20wmwGECdsfxTCSmlqKEn/8ocNRWGaSnWI/RAs+PcEQCid6UDLodDuqa6DGEh4Kwt7wJX+rGNu/IIBdbjB6JOdM6OEcDOpE+M1gQ4UTQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Mcwrx3xV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Mcwrx3xV" Received: by smtp.kernel.org (Postfix) with ESMTPS id A6194C4AF17; Mon, 31 Aug 2026 00:25:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1788135919; bh=yiocxA49550KUCzo+T/5GJg/8zdJWfhnYG1cFdaaNSU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=Mcwrx3xVKrw7T1MSZ2sW1ftA1mFi8bY/BSWRzLgPsqEPrbTFpHguRcFKPiZJdqLh3 +uMrgEzTGPEViQTFLuXMKyEJB9fdZoO5+0xGd9BGKNa4KI1gWRcAv6bFweeCqyFSrS bSvXhYUPEAWJu51b1eSpkQCMt8i3sgt0d//1XhxYni6GyF9dBWQwumlE2lNbvJVAeo CVDqOKpdsolJOeE+bunKAJYHgWIkKk9CmbiyQDvSUWYLXMjBfOcFhoAcbZKzmIiw+D KyzKr4IZ3IG+301E/VYad8pZz+LWpn4IvRJhVnG3/0bVHCvoOQM4mudvUpHPtEBzFb eATcDh+aftF7w== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88F9AC61DF1; Mon, 31 Aug 2026 00:25:19 +0000 (UTC) From: Ackerley Tng via B4 Relay Date: Sun, 30 Aug 2026 17:25:03 -0700 Subject: [PATCH v12 02/45] KVM: guest_memfd: Use kvm_mem_is_private() when populating guest_memfd memory Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260830-gmem-inplace-conversion-v12-2-85e5fd25252a@google.com> References: <20260830-gmem-inplace-conversion-v12-0-85e5fd25252a@google.com> In-Reply-To: <20260830-gmem-inplace-conversion-v12-0-85e5fd25252a@google.com> 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, Randy Dunlap , Lorenzo Stoakes , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jason Gunthorpe , Fuad Tabba , Vlastimil Babka , Baoquan He 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 X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788135915; l=1236; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=J603Sitd2IbIuBFVZAUo4Wjqwpu3VfTvCGGSI7vmMZw=; b=z1YCMYJwV4u7T1sNVHAC3h7gI3Q7k56jpxSLyvJRX3D5GfhJNIFP05gy8Y0FpE9NEMLL/4MSl 1WCUEPt1h8tAH7mYqnxVUByUNSnEvOicaThuXDmg0bin61FAkF+2Srv X-Developer-Key: i=ackerleytng@google.com; a=ed25519; pk=sAZDYXdm6Iz8FHitpHeFlCMXwabodTm7p8/3/8xUxuU= X-Endpoint-Received: by B4 Relay for ackerleytng@google.com/20260225 with auth_id=649 X-Original-From: Ackerley Tng Reply-To: ackerleytng@google.com 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 2190e4d6b6bea..69612bf146be1 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; } -- 2.55.0.897.gb25b4bd76c-goog