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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iHPN1-00023D-A0; Mon, 07 Oct 2019 09:31:59 +0000 Received: from inca-roads.misterjones.org ([213.251.177.50]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iHPMy-00022j-J6 for linux-arm-kernel@lists.infradead.org; Mon, 07 Oct 2019 09:31:58 +0000 Received: from [185.201.63.254] (helo=big-swifty.misterjones.org) by cheepnis.misterjones.org with esmtpsa (TLSv1.2:AES256-GCM-SHA384:256) (Exim 4.80) (envelope-from ) id 1iHPMs-000608-PU; Mon, 07 Oct 2019 11:31:53 +0200 Date: Mon, 07 Oct 2019 10:31:31 +0100 Message-ID: <86tv8kzyto.wl-maz@kernel.org> From: Marc Zyngier To: James Morse Subject: Re: [PATCH 5/5] arm64: Enable and document ARM errata 1319367 and 1319537 In-Reply-To: <6d41efac-3606-328a-0a18-f86ed070932c@arm.com> References: <20190925111941.88103-1-maz@kernel.org> <20190925111941.88103-6-maz@kernel.org> <6d41efac-3606-328a-0a18-f86ed070932c@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/26 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.201.63.254 X-SA-Exim-Rcpt-To: james.morse@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, will@kernel.org, mark.rutland@arm.com, catalin.marinas@arm.com, suzuki.poulose@arm.com, julien.thierry.kdev@gmail.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191007_023156_771223_95F1D2EA X-CRM114-Status: GOOD ( 14.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , kvm@vger.kernel.org, Suzuki K Poulose , Catalin Marinas , Julien Thierry , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 03 Oct 2019 12:11:00 +0100, James Morse wrote: > > Hi Marc, > > On 25/09/2019 12:19, Marc Zyngier wrote: > > Now that everything is in place, let's get the ball rolling > > by allowing the corresponding config option to be selected. > > Also add the required information to silicon_arrata.rst. > > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > > index 3adcec05b1f6..c50cd4f83bc4 100644 > > --- a/arch/arm64/Kconfig > > +++ b/arch/arm64/Kconfig > > @@ -523,6 +523,16 @@ config ARM64_ERRATUM_1286807 > > invalidated has been observed by other observers. The > > workaround repeats the TLBI+DSB operation. > > > > +config ARM64_ERRATUM_1319367 > > + bool "Cortex-A57/A72: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation" > > + default y > > + help > > + This option adds work arounds for ARM Cortex-A57 erratum 1319537 > > + and A72 erratum 1319367 > > + > > + Cortex-A57 and A72 cores could end-up with corrupted TLBs by > > + speculating an AT instruction during a guest context switch. > > + > > If unsure, say Y. > > > > config ARM64_ERRATUM_1463225 > > > > Nit: You pinched someone elses "If unsure, say Y."! Ah! Well spotted. Thanks, M. -- Jazz is not dead, it just smells funny. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel