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Wed, 08 Feb 2023 16:40:28 +0000 Date: Wed, 08 Feb 2023 16:40:28 +0000 Message-ID: <86fsbgyutf.wl-maz@kernel.org> From: Marc Zyngier To: Zaid Al-Bassam Cc: Jesus Sanchez-Palencia , Russell King , Catalin Marinas , Will Deacon , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH 0/8] perf: arm: Make PMUv3 driver available for aarch32 In-Reply-To: <20230126204444.2204061-1-zalbassam@google.com> References: <20230126204444.2204061-1-zalbassam@google.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/28.2 (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: 185.219.108.64 X-SA-Exim-Rcpt-To: zalbassam@google.com, jesussanp@google.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, peterz@infradead.org, mingo@redhat.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230208_084034_139071_5AA7CF85 X-CRM114-Status: GOOD ( 16.90 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 26 Jan 2023 20:44:36 +0000, Zaid Al-Bassam wrote: > > Currently, PMUv3 driver is only available for ARMv8 aarch64 > platforms, ARMv8 running in aarch32 mode dont have access to > the driver. This is, especially, a problem for ARMv8 platforms > that only have aarch32 support, like the Cortex-A32. FWIW, I've pushed out my own interpretation of this series to [1], including the changes I suggested. The results seems to correctly work in a 32bit guest on a 64bit host, which is what I (used to) care about. Feel free to pick it up. M. [1] https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=arm/pmuv3 -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel