From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C8F0CC6B1D for ; Wed, 14 Oct 2026 13:48:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1qQSURO19kIhXzArX2xPf4oTamNn87j/Xtfb5YjYQeg=; b=nkrNyOz1BHafSw2rO4LToe0nee 0MO6W2pdhaUosxx8Cf/JZlveo1B5MpuUyiGAZHSVVPEnarN3qphiusZJg9cKerDGzmUhYr/kcvI3H 6RzGGlyZf7M6VLT1JBghOUKP6S5GZq6nfwSLXb6XUIIS1kc19Vh1udkHP+r4pn4fcNzQccF69hj6y 3PMv1xq7Akfh+JiKM7seb//N+vBbNMdCe+Q31LxZUWZtpKIwBigmXVPzkpX64QO9+AbI/7y8XL+IY iCnaLUszdKVH+WHsDMx1U9XUALIN21EzLgR5/rRoeSlyZD4JTNzn3tlCETYXUSA3UVarCFpOoNs05 RXgklhZA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xGzL7-0000000FdvG-2IKj; Wed, 14 Oct 2026 13:48:17 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xGzL5-0000000Fdv3-2rNb for linux-arm-kernel@lists.infradead.org; Wed, 14 Oct 2026 13:48:15 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id D6FC86057A; Wed, 14 Oct 2026 13:48:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 025671F00A2F; Wed, 14 Oct 2026 13:48:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791985694; bh=1qQSURO19kIhXzArX2xPf4oTamNn87j/Xtfb5YjYQeg=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=V+Wp8E3KHj5HfarmjhHe8oPbVzrZV+mSoVlO20FAUrZAtZZUSAvDZDvEdIUnMOfWs PdNFGYrmWub+NN20ADFsWODAqJ3aIsrh+e0rqf6NEtKzTnDVGbFIftvtvYw9KUmM8v iGP4otTdzMyc8eRi+SNMBLMAdH4SVyy9ZPMTN8W3SsuNA2PnirUtJbaab3cG+2c8ym dWi6Wa9WJU73sMqDniudv0FvXOFPy9nXKJHHb2eTUks3yFfMZcFaeA1bARgEjo5TrC r+DoskInDcsRaq/0vcO9ButTC3Nw8nmVHd613gX+AutImHQNrGT4cq/NfYOUWyHI/m oXmBkDNyfnpXg== Date: Wed, 14 Oct 2026 14:48:02 +0100 From: "Lorenzo Stoakes (ARM)" To: Fuad Tabba Cc: Catalin Marinas , Will Deacon , Marc Zyngier , Oliver Upton , Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , Paolo Bonzini , Jonathan Corbet , Mark Rutland , Randy Dunlap , Christian Borntraeger , Janosch Frank , David Hildenbrand , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Shuah Khan , Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Jack Thomson , Jack Thomson , Alexandru Elisei , Vincent Donnefort , "Aneesh Kumar K.V" , Sean Christopherson , Claudio Imbrenda , Leo Soares Passos , Wei-Lin Chang , linux-s390@vger.kernel.org Subject: Re: [PATCH v4 01/14] KVM: Allow architectures to disallow pre-fault Message-ID: References: <20260923-kvm-arm-prefault-v4-0-d4b0b4dfa8c3@kernel.org> <20260923-kvm-arm-prefault-v4-1-d4b0b4dfa8c3@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Sep 23, 2026 at 07:52:27PM +0100, Fuad Tabba wrote: > Hi Lorenzo, > > On Wed, 23 Sep 2026 16:15:44 +0100, "Lorenzo Stoakes (ARM)" > wrote: > [...] > > diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c > [...] > > +int kvm_arch_pre_fault_allowed(struct kvm_vcpu *vcpu) > > +{ > > + if (!vcpu->kvm->arch.pre_fault_allowed) > > + return -EOPNOTSUPP; > > + > > + return 0; > > +} > > nit: the comment above the smp_rmb() in tdx_sept_map_leaf_spte() still > says pre_fault_allowed is read by kvm_arch_vcpu_pre_fault_memory(), > but after this patch it's read here. Ack, will chase that up! > > Reviewed-by: Fuad Tabba Thanks! > > Cheers, > /fuad > -- Cheers, Lorenzo