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 4387D3AD515; Thu, 10 Sep 2026 23:55:37 +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=1789084537; cv=none; b=U0Qs9BtxSHv7HXyjacmju3LoLzrBnYtkPZb/DU3bT2UcJ+EUyUlZSmyk7B5++cFbQCGgyCSWXcfoU3niCCPwsz21S+VGmNswXhBDEWykP9TlsJ9D6JU+jOVxCObdzItzkhDJkeU6scngVEcJYsX3HbkI1GqKt2EQXmJeB5xqozQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789084537; c=relaxed/simple; bh=BhQ5IW1cdYY4/D+Pfwjb2BH2ZNvlUKlV4VeivpRJOSY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=s4UYZpF3Eyj+P+VAN3VjIzRDU83ENb7CxiQMxstUynW8i35HAdLke/60DISTMSUUR2RhKnWUGvCKIb1CZNEyrP0Brg2RABs0gmoPCDo0a33bEgP6X/+JXOSOvoX7oW0iyK2zSbZ9QP4Oy9NnbjgifQXNGs/aWLhOq0P+NfGXDIA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BGIJEKj8; 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="BGIJEKj8" Received: by smtp.kernel.org (Postfix) with ESMTPS id B3309C32782; Thu, 10 Sep 2026 23:55:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1789084536; bh=BhQ5IW1cdYY4/D+Pfwjb2BH2ZNvlUKlV4VeivpRJOSY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=BGIJEKj8Oq1+UDALX+ziDvBiXlbgEWGrZIaXV6mJMCsHWYaK3cilkTceEck54954i RFolxUsihSJpeH6N4NqmVWSuOr8GyP40I2N/nTJVV8Sg24H5s1IultFS6i4oY1n8fI PcebJG1lZ2thUGIcQY8tuYWN6SWy9UZkbDh4582V6nWdDi1beliixUhJCSyS23HvOA fciZwuCcRrNCV2v8xOyhf/TC5lS538ObcHZKOMLXb751F6TIPE98yl9AIH3CycrLeK GXVzOk1MWo/bkDQflK2gsoW+Vn5c4Tk28HMxgtXDL8FkiMcM2f6/nuW8qWzb7wd3yc ajnUGiZe9chKw== 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 8DDCBC88E41; Thu, 10 Sep 2026 23:55:36 +0000 (UTC) From: Ackerley Tng via B4 Relay Date: Thu, 10 Sep 2026 16:55:28 -0700 Subject: [PATCH v13 02/44] KVM: guest_memfd: Use kvm_mem_is_private() when populating guest_memfd memory Precedence: bulk X-Mailing-List: kvm@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: <20260910-gmem-inplace-conversion-v13-2-dd6fbf94f4e1@google.com> References: <20260910-gmem-inplace-conversion-v13-0-dd6fbf94f4e1@google.com> In-Reply-To: <20260910-gmem-inplace-conversion-v13-0-dd6fbf94f4e1@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=1789084533; l=1294; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=xBY4/PDaaQtcraLoiAXWiRvSzJvbVV+mCywqqocyhZQ=; b=jHExpGn19+46TGPhs2mSl/iRUELt5TmexnGBnzViqDnulHKSXZHs6JhnFrc0k/g5LfTsHjFl8 V2SEJMaaAvDAthuaxmPPzBuyzANiE73i2fVJSedDfp0EMUynAudIhb8 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. Suggested-by: Xiaoyao Li Signed-off-by: Sean Christopherson Signed-off-by: Ackerley Tng Reviewed-by: Xiaoyao Li Reviewed-by: Binbin Wu Reviewed-by: Fuad Tabba Reviewed-by: David Hildenbrand (Arm) --- 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; } -- 2.55.0.1007.g17ff1f9808-goog