From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qt1-f170.google.com (mail-qt1-f170.google.com [209.85.160.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F079135EDBD for ; Fri, 19 Jun 2026 08:11:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=209.85.160.170 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781856679; cv=pass; b=cGPtmHmVtk9a23e/3oIsKy1e7dEQ8N37qli6iXFLqbSdqe8qyD7T9OHveIumeCU/WZn+BVVnWEqfDGMMUBJ/VHBm43Zu9tXxIBdBzZVdnTaUTwN3ISpwzm3uqjtl6cdXUCIo7Qh39F8TUw9914dyrcc4Ev4saTfAKzjjhMyATVU= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781856679; c=relaxed/simple; bh=pR0Zn2zvw6IcMAbbufKDgeBYie2BeloIDPjTlVVsmpY=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=dIK3qytOVcF2ghc4BbskLACjNRzq4oFKLsyemi5rv3E6vy+o3/VPTLSvARiyfja8LN9IJ3fkkT4cQgPOefeFp0zqyrl4KJ6FSaoeAwObTWOGJ4MGwZG5Q2q7Bu7IhTGAFRe3BArSV0xkaQOVPWel2dEOLTAKfgJ3O+e5vAU4qac= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=loj6O+Nd; arc=pass smtp.client-ip=209.85.160.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="loj6O+Nd" Received: by mail-qt1-f170.google.com with SMTP id d75a77b69052e-51765531803so193941cf.0 for ; Fri, 19 Jun 2026 01:11:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1781856677; cv=none; d=google.com; s=arc-20260327; b=kqWhKgNfK8bxyb09lXiRa/lnwN0B+5kU0LVBe6ROBRnVUuIPPeE9MeaFvM8CPYNP8i MvBw4tuIrEN00bZCqebcG6b6Azk5/w+LxdlF62BgTXfEAjq+marpxS6jMEu+nUQbw+q7 95ss1iR+w7iCRXKm+cdgCTIMutSmKCh8dU8+R1Xx/OU0FP9SsTGObzt2Q55HaMnmbYQ4 9fkYSUxS3b2M3HuWmPiLZ//jZcrvk3DwppEZC3o5rXthay/4BcfsCK4GvSujxWlFP7m7 1FVEttvhDn8uql/QXMamHkfn0VhdsFq6LvNoOiuIjd80uDn9HxVvMZ1wx8WoR0FKZZJc 3bPg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20260327; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:dkim-signature; bh=iM+8nrvlghRqxLR5gEfhNSNnyjY3ZW8GVmgYtfXOYBs=; fh=LNBd+Px5NcqbcBpxZz6JDofrmEgqg/R3hAFZVYPk0f8=; b=CyH0BEdp0V66/fSGjyDQ5fnvG8BH70cTp1D7XM7s3yNBYhBeR77H+//zJdYdbH5HbM KDDlmAkkqBLPQqrlbtuVtSZio+4atLFMde8WeCpJ3KJofzvspyPoiD/t6Od6tsPIx1vD pwYSqoX/6kp7Xrt58nSYO6q9YAd7p5/nuZhSrQo1utqqJM+Y1t9qMsYySoL/0SHoVtZm LLaaYHGhz3SbrT6Aq2d3r0rHEAIFxDEibFHqJBotQcyhd8qjhMOFuAGWm9BjznXssSG+ K4o7LmxHe+/Ewh9a4aQQERXVnGBCBvUIqRf55ieoF8ixN+LPs/fFWPnhahKt4CIz1dEW YMPg==; darn=vger.kernel.org ARC-Authentication-Results: i=1; mx.google.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781856677; x=1782461477; darn=vger.kernel.org; h=content-type:cc:to:subject:message-id:date:from:in-reply-to :references:mime-version:from:to:cc:subject:date:message-id:reply-to :content-type; bh=iM+8nrvlghRqxLR5gEfhNSNnyjY3ZW8GVmgYtfXOYBs=; b=loj6O+NddywcN7wL1xrCwqxjT4ZN9Ac53eU9ll7nxx7Xviu1AaXETFnmHI/NWxcXPr 2tJOyD13+0Tc2mMvt/0jxvDCuCjQofn+Eu1lFwOxzQPdnek4cWrSyMzp69H5jZFbIiFw m2pL4MTAUSKIkrjvSWB4RIgyxLuYxhB4w0JU4cYiC64ASHdlO/8i+aQuJJ/04hbsN+UP CIkZGrA68OtXu619RPX4SuoMTzikB/Xhko55vP/fH4az0XznVHWuLwRXzWnVI33Ch5FK QkyQ18CymOUUlU5PsHCF5MaeIZWokQZr5ZD+UljGKqNfiM3VTMDvcyk35TUGjxVIQpru 2+Ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781856677; x=1782461477; h=content-type:cc:to:subject:message-id:date:from:in-reply-to :references:mime-version:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to:content-type; bh=iM+8nrvlghRqxLR5gEfhNSNnyjY3ZW8GVmgYtfXOYBs=; b=p2j9ISgk9hK5ZmzE3zvaQbYwKrQ5hErSTmCmC7hXLYk28XHrf6nBbTNn009RCHR/jb Qulsyuqhn7VybaSEGF+y22507OVwZ911t/i6CDGm9HuBxkuCg8PW11YL08BDwOcZzut/ 0GJodMLhTndBFQ3IPuZO3jB3eTPdIwWe20/pT7jRN5G6LyH83nEWherGiw6HbrG9KDA3 iDQOAqiL3qSWCZggslKfdA7TdPEk0eBipdQJpSlwNLSmqpVN52xHP5K4YZnq5pqWbqkT xjU6lRu5MW0EPx55u9oFE+n8Q2A7o6IN6vVJNYQcXRYS/ok0QuQTSnoUeOrt9r/mhuB2 BKYg== X-Forwarded-Encrypted: i=1; AFNElJ+6gDotTHWwSGyfwG5ko2jlNZ3mBID463FjQUNmzJBuq4EB0LbnM+/Jr2SlpPg0Hr9FUmOzBrwaq3IXKa8=@vger.kernel.org X-Gm-Message-State: AOJu0YwOlzxauJrO2vrYLWdoctOD+ksaDsosD2wxPyNvxm2/oOsx3USt setWQ8uNjrFKEtn+m1cqeYjE24muI0eZdB7tMn0u4xyxVyUH2yPoJz0IH/yJg2HTh408rHzubPb sj7dpuWIeUS9lpd7JzX+V005EmlMcFd4qbs8KgeGo X-Gm-Gg: AfdE7cnJzmqd3rbTG6Jmr8koYWNvz3FRtdh5iO6ApKoEMXchn5jSEIlfw34cKQwFnjB 07B7BmCwZ/XHemuEgsUszu3ZyiOPUazigeapgqXgyIt1DqwgDroXvHDIHPNxUTmJmftqhkEq0xP KSmfBsUuC303Z3/Fezhqfqk67IKsziF9e1stbvdh8m91BKLphLasw8d6QwYIysM+v4mCyZbhBEq HV/Iowr6aenbNMsgHX+5dDk92sSDtCZz1mJRT/7nq52AQRNl7D74S2CkEeJ/cO8utPzTYpn7w== X-Received: by 2002:a05:622a:191d:b0:517:38aa:c2b3 with SMTP id d75a77b69052e-519e48d02b3mr6024501cf.14.1781856676299; Fri, 19 Jun 2026 01:11:16 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20260618-gmem-inplace-conversion-v8-0-9d2959357853@google.com> <20260618-gmem-inplace-conversion-v8-4-9d2959357853@google.com> In-Reply-To: <20260618-gmem-inplace-conversion-v8-4-9d2959357853@google.com> From: Fuad Tabba Date: Fri, 19 Jun 2026 09:10:39 +0100 X-Gm-Features: AVVi8CdHX5FmAYr_l4a3mgee9sp6dg3wXgxt_dR1E7cWLhRy0b4A0kukfNDJw2g Message-ID: Subject: Re: [PATCH v8 04/46] KVM: Decouple kvm_has_arch_private_mem from CONFIG_KVM_VM_MEMORY_ATTRIBUTES To: ackerleytng@google.com Cc: 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 , Vlastimil Babka , 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 Content-Type: text/plain; charset="UTF-8" On Fri, 19 Jun 2026 at 01:31, Ackerley Tng via B4 Relay wrote: > > From: Sean Christopherson > > When memory attributes become trackable in guest_memfd, the concept of > having private memory is no longer dependent on > CONFIG_KVM_VM_MEMORY_ATTRIBUTES. > > With this, on x86, kvm_arch_has_private_mem() is defined if some CoCo > platform support (or the testing CONFIG_KVM_SW_PROTECTED_VM) is compiled > in. > > Signed-off-by: Sean Christopherson > Co-developed-by: Ackerley Tng > Signed-off-by: Ackerley Tng Reviewed-by: Fuad Tabba Cheers, /fuad > --- > arch/x86/include/asm/kvm_host.h | 4 +++- > include/linux/kvm_host.h | 2 +- > 2 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h > index 8e8eb8a5e8a6b..1bde67cf6eb0e 100644 > --- a/arch/x86/include/asm/kvm_host.h > +++ b/arch/x86/include/asm/kvm_host.h > @@ -2394,7 +2394,9 @@ void kvm_configure_mmu(bool enable_tdp, int tdp_forced_root_level, > int tdp_max_root_level, int tdp_huge_page_level); > > > -#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES > +#if defined(CONFIG_KVM_SW_PROTECTED_VM) || \ > + defined(CONFIG_KVM_INTEL_TDX) || \ > + defined(CONFIG_KVM_AMD_SEV) > #define kvm_arch_has_private_mem(kvm) ((kvm)->arch.has_private_mem) > #endif > > diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h > index 201d0f2143976..d370e834d619e 100644 > --- a/include/linux/kvm_host.h > +++ b/include/linux/kvm_host.h > @@ -722,7 +722,7 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) > } > #endif > > -#ifndef CONFIG_KVM_VM_MEMORY_ATTRIBUTES > +#ifndef kvm_arch_has_private_mem > static inline bool kvm_arch_has_private_mem(struct kvm *kvm) > { > return false; > > -- > 2.55.0.rc0.738.g0c8ab3ebcc-goog > >