From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 DD13747D956; Fri, 31 Jul 2026 18:51:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785523916; cv=none; b=mY0r38koaRBSYDNfRA9/ZjjpkdGiEdaf8wgY9dqTnxUAhoKyl7u7GTs7Gc5/7vYSl6HMwhKxgm3MqZ7Fl+EsE2u3dG1SH/MekUKEizP49yYAf/G2vTOXzjFRcKnmd/KQvaHIbQbSszpbm0QjV9B3dsblCFCBjElxa9CxUwQywq0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785523916; c=relaxed/simple; bh=wWWcZZ9OZWBatSMCH7bJn4j3ezHevjcCiOXdB0spbn8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=koNiYUDIFOsXhtJZgBEUNx7qkU/o0wmqvlyA0fhLC/U1C5ZYu7QpWXvsjGxOBNxTIVR4vJ5XhIQCdiLdQFz4szxwrD+gWC/yH+V/SbEibmdQP4hSwZRaXjTQ2wMlfOr/+MPFZb6v9xLcF6S8sZF5yYeMnC874Siq/M4ZGOIGIy4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SJWUOkon; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SJWUOkon" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 805081F00AC4; Fri, 31 Jul 2026 18:51:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785523914; bh=XdiDIa8NUQSLfVGJe/NaVaWb+skzu3+raBFzb05hxto=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=SJWUOkonsQEKYzJ17537pNVwZXUV/oYXelsRh6p0kHOmhjqlvBhu/GfQod+9O6ghz mGJOjdoiu9YmpEae02Z2T8XxpnazLFW6ptzCdXC/0yQDhYhQmo1H0hJRF3zP/Da5YV Nifh0g4sE23HaPGqkM8zSZxNC4iAkBYPjrMGyKr6UQOuhrWbX6RwDsc9fMSrJpoaAs fKxHkkyT5+6a0F0hu7KuhaZ4aqp1Zw8/JOEfcDtyZhc86UCKVIKSQ944tiXzVtFTKM mWZFTQ3BYi0rrXtHfY7m7C536KVDGrIUd7Qqgud/Q0mFZMawTIIh5SjYboFZm30TMR qNkahoHalUQKg== From: Oliver Upton To: linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Mostafa Saleh Cc: Oliver Upton , maz@kernel.org, seiden@linux.ibm.com, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, vdonnefort@google.com, tabba@google.com, sebastianene@google.com, keirf@google.com Subject: Re: [PATCH v3] KVM: arm64: Optimize protected mode with FWB and DIC Date: Fri, 31 Jul 2026 11:51:49 -0700 Message-ID: <178552142327.30097.5768444825254040023.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260723162002.3848054-1-smostafa@google.com> References: <20260723162002.3848054-1-smostafa@google.com> 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: 8bit On Thu, 23 Jul 2026 16:20:02 +0000, Mostafa Saleh wrote: > KVM opportunistically enables FWB if supported by the system for guest > VMs, which allows it to elude cache maintenance for data as they are > forced to be cacheable from stage-2. > In that case, __clean_dcache_guest_page() will immediately return. > However in protected mode, before calling __clean_dcache_guest_page() > it loops over the range and fix_map/unmap it, issuing TLB > invalidations, dsb() and isb() unnecessarily. > > [...] Applied to next, thanks! [1/1] KVM: arm64: Optimize protected mode with FWB and DIC https://git.kernel.org/kvmarm/kvmarm/c/81b2d03f8c86 -- Best, Oliver