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X-Received-From: 2a00:1450:4864:20::443 Subject: Re: [Qemu-devel] [PULL 09/22] target/arm: Implement ARMv8.5-CondM X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Richard Henderson writes: > On 8/9/19 2:53 AM, Peter Maydell wrote: >> Hi -- it's just been pointed out to me that if our 'max' CPU >> supports v8.5-CondM then we ought to be setting the HWCAP2_FLAGM2 >> bit in the hwcaps for linux-user mode. (Maybe we implemented this >> before the kernel defined the hwcap bit?) > > Yep. We added CondM in March and this hwcap bit was added in June. > > I keep thinking that they'll stop adding hwcap bits that can now just as = easily > be "read" (trap and emulated) from id registers. They've filled up HWCAP= , and > only have 23 left in HWCAP2. It's impressive on our modern hardware that bits are getting so scarce ;-) We haven't yet started on filling up cs_base for our own flags but where does it all end? -- Alex Benn=C3=A9e