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Fri, 27 Mar 2020 10:48:43 -0700 (PDT) Date: Fri, 27 Mar 2020 17:48:38 +0000 From: Andrew Scull To: Steven Price Subject: Re: [RFC PATCH] arm64: unify WORKAROUND_SPECULATIVE_AT_{NVHE,VHE} Message-ID: <20200327174838.GD178422@google.com> References: <20200327143941.195626-1-ascull@google.com> <1705907b-234c-6f56-1360-f598c8047d1d@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1705907b-234c-6f56-1360-f598c8047d1d@arm.com> User-Agent: Mutt/1.12.2 (2019-09-21) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200327_104848_701766_FA1CC14C X-CRM114-Status: UNSURE ( 7.75 ) X-CRM114-Notice: Please train this message. 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: "qwandor@google.com" , "qperret@google.com" , Marc Zyngier , Suzuki Poulose , Will Deacon , "wedsonaf@google.com" , "linux-arm-kernel@lists.infradead.org" , James Morse , "dbrazdil@google.com" , "kernel-team@android.com" , "kvmarm@lists.cs.columbia.edu" , "tabba@google.com" 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 Thanks, Steven. Could we look into the EPD* caching microarch details Marc was referring to for these A55 and A76 cores? If the behaviour is the same as A57/A72 then it sounds safe. Otherwise, there'll need to be some invalidation to avoid that issue. And thanks for the pointer to your previous patch, it's a very helpful reference. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel