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Mon, 06 Jul 2020 17:05:52 +0100 MIME-Version: 1.0 Date: Mon, 06 Jul 2020 17:05:52 +0100 From: Marc Zyngier To: Will Deacon Subject: Re: Query regarding ERRATUM_1418040 In-Reply-To: <20200706151651.GA23622@willie-the-truck> References: <1ce7dad5-a981-5968-cc34-7648faea8636@codeaurora.org> <062be27686369d28bd2054a54c307400@misterjones.org> <20200617112542.GB3503@willie-the-truck> <20200701162731.GA15317@willie-the-truck> <4196efaea5fbdf11dd6fa3ba460967d3@kernel.org> <20200706120946.GA23341@willie-the-truck> <20200706151651.GA23622@willie-the-truck> User-Agent: Roundcube Webmail/1.4.5 Message-ID: <33f5d0c2348dc4bd78f442cb92de9715@kernel.org> X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: will@kernel.org, neeraju@codeaurora.org, linux-arm-kernel@lists.infradead.org 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-20200706_120555_510754_B862BFD7 X-CRM114-Status: GOOD ( 12.03 ) 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: Neeraj Upadhyay , linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2020-07-06 16:16, Will Deacon wrote: > On Mon, Jul 06, 2020 at 01:27:16PM +0100, Marc Zyngier wrote: >> On 2020-07-06 13:09, Will Deacon wrote: >> > On Thu, Jul 02, 2020 at 09:19:04AM +0100, Marc Zyngier wrote: >> > > + mrs x1, cntkctl_el1 >> > > + bfi x1, xzr, #1, #1 // ARCH_TIMER_USR_VCT_ACCESS_EN >> > >> > Can you use BIC here? >> >> You wish. Turns out that BIC is labelled as a v8.2 instruction, even >> if is just yet another alias for BFM, and gas sends me packing >> if I dare using it. >> >> So the above BFI is a poor man's version of BIC. Which objdump happily >> disassembles as... BIC! Yes, this is all braindead. > > Wha.. really? What about all our other uses of the BIC alias? Are you > sure > you're not mixing it up with BFC? Of course I am. BIC is absolutely fine. I blame the lack of coffee, or something else. 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