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 650791AA7A6; Fri, 19 Jun 2026 00:31:47 +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=1781829107; cv=none; b=cvbN26HXDnAUOMUrr9Ein8L+IN3H9wzLeuH0NBHDhIAaDe+7guPH5JudlF6SQajP7DEI3yxkXfBRz3IENEU5UjZLcIlnF61Tpmf6GAZyxeyvCTkGMO70aXl6ZaOnGAqzbhQWqosvslxMD210vUe0ZZXmAZYT5vQkvJ+VR7mNZqM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781829107; c=relaxed/simple; bh=CB7AfOjVFZWOFS59P0Uu5cqgMUWbrL47cDd7UKb3SYQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bXknPW8svKkd28wjqBaFg/AT6qV9gDfFxI8jffoP6I7TSFVD0SlN9EYPxrXfP60h5ucJ3G2HBHU3KTtPybcakpS/JMbcVU7Dr2wwVtEx/aBdR2/QFL6pPcX+Zoyux2UucVF05Tm8nRShX7WK+OOD9YuRDmPxJ9U/tkApy9pYl3c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WLNmkqVm; 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="WLNmkqVm" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2E159C4AF64; Fri, 19 Jun 2026 00:31:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1781829107; bh=CB7AfOjVFZWOFS59P0Uu5cqgMUWbrL47cDd7UKb3SYQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=WLNmkqVmie1VOR8aZ03V7tHR2WW6UlhAE0jz1jnWfhnMAP0I2iMIOdBZ+a9m2OqHl NqDDfNBbtPzPTkiYH9wTi195riRWAbB+Z8lxB1O2SnnSXSWLNrN6z1pP4QihnmN+HI YKzKUj4YpX5KPT/NWOLMkroUlRaClIRq+95vWEN8OBWv0MSrc8Wg6MBHQQGPupRbrn VchNHVnpwzXZq9oaykCYaaZPG/MqU5HWhah2RmTRS/w0bYrPTtFgmP2OlCTjXydbMo mK8l1PfoouSO/QX+Vvq1JQhzY6HdRGdmu8QdC8vlPdmD9J+iANtDGxhA03SREP0TG7 3gqOPYMPJC19w== 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 1FA48CD98FE; Fri, 19 Jun 2026 00:31:47 +0000 (UTC) From: Ackerley Tng via B4 Relay Date: Thu, 18 Jun 2026 17:31:42 -0700 Subject: [PATCH v8 05/46] KVM: Make CONFIG_KVM_VM_MEMORY_ATTRIBUTES selectable Precedence: bulk X-Mailing-List: linux-kernel@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: <20260618-gmem-inplace-conversion-v8-5-9d2959357853@google.com> References: <20260618-gmem-inplace-conversion-v8-0-9d2959357853@google.com> In-Reply-To: <20260618-gmem-inplace-conversion-v8-0-9d2959357853@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, 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, 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 , 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 X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1781829104; l=1858; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=xOoyBwi9Fnl8DxuOA6f4/8X9Su/Z5hzouF7RHonH6fY=; b=V+F5mfHWgPIoDzpZABnezOfAtJfijD6ASXKARAsXF7WpHdkwwRvE7O50VRv2i5WLaItJkqw1F lhXVRRjtDwXAl9Z1griCM60xbbYwOUvx/uXBC0nK6Jp5pf9anwnxeon 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: Ackerley Tng Make CONFIG_KVM_VM_MEMORY_ATTRIBUTES selectable, only for (CoCo) VM types that might use vm_memory_attributes. Also document CONFIG_KVM_VM_MEMORY_ATTRIBUTES to specifically be about the private/shared attribute. Signed-off-by: Sean Christopherson --- arch/x86/kvm/Kconfig | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 24f96396cfa1c..c28393dc664eb 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -81,13 +81,16 @@ config KVM_WERROR If in doubt, say "N". config KVM_VM_MEMORY_ATTRIBUTES - bool + depends on KVM_SW_PROTECTED_VM || KVM_INTEL_TDX || KVM_AMD_SEV + bool "Enable per-VM PRIVATE vs. SHARED attributes (for CoCo VMs)" + help + Enable support for tracking PRIVATE vs. SHARED memory using per-VM + memory attributes. config KVM_SW_PROTECTED_VM bool "Enable support for KVM software-protected VMs" depends on EXPERT depends on KVM_X86 && X86_64 - select KVM_VM_MEMORY_ATTRIBUTES help Enable support for KVM software-protected VMs. Currently, software- protected VMs are purely a development and testing vehicle for @@ -138,7 +141,6 @@ config KVM_INTEL_TDX bool "Intel Trust Domain Extensions (TDX) support" default y depends on INTEL_TDX_HOST - select KVM_VM_MEMORY_ATTRIBUTES select HAVE_KVM_ARCH_GMEM_POPULATE help Provides support for launching Intel Trust Domain Extensions (TDX) @@ -162,7 +164,6 @@ config KVM_AMD_SEV depends on KVM_AMD && X86_64 depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m) select ARCH_HAS_CC_PLATFORM - select KVM_VM_MEMORY_ATTRIBUTES select HAVE_KVM_ARCH_GMEM_PREPARE select HAVE_KVM_ARCH_GMEM_INVALIDATE select HAVE_KVM_ARCH_GMEM_POPULATE -- 2.55.0.rc0.738.g0c8ab3ebcc-goog