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b=pqZS310enYO3SuTKgqFBE1ONxMk5uQHkWyqjqlJm7oPicN+OhBG2QVNkgmtU9si4v aO84Mpuvhc8OggeDVc6lsPuTWi2ARPg6YGyOOmMlwJYMRmLwLr/7ekvT13PDEXtO8N MSvzPnFp9jNfRk9F3oYMnRCeY0litDzNrwFbgRBiZvsx/RDgK0iLmolLBSgsy3UmLK dgD52B7taQ7VBGBKL1KBfJGTbFJIgXgSkGJtuvIdGoYCqOGELbep0OGePItQqw1IRY j5lEJUPcwlLaVh4yh2kJUdHIoR+DNVCESBUvxThvwEc584Vx/fPL3TtrlnPnONN75K fo2FvpN95wYlQ== Date: Thu, 15 Aug 2024 16:24:27 +0100 From: Mark Brown To: Dave Martin Cc: Joey Gouly , Catalin Marinas , linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, bp@alien8.de, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev Subject: Re: [PATCH v4 18/29] arm64: add POE signal support Message-ID: References: <20240503130147.1154804-1-joey.gouly@arm.com> <20240503130147.1154804-19-joey.gouly@arm.com> <20240801155441.GB841837@e124191.cambridge.arm.com> <20240806103532.GA1986436@e124191.cambridge.arm.com> <20240806143103.GB2017741@e124191.cambridge.arm.com> <20240815131815.GA3657684@e124191.cambridge.arm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="wqb8liXWozkhAkEw" Content-Disposition: inline In-Reply-To: X-Cookie: -- Owen Meredith X-Rspamd-Queue-Id: 24A4C180028 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: accyr6wjp5oxhts4tdjmhrs8m5x5jewr X-HE-Tag: 1723735479-892382 X-HE-Meta: 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 4/qj8Ym9 C2SWnhuHxK3AifQ/5AKkRVXCDZFe4kUDv6eDE1gtb74ppBNz3m43YxHvxPgfVPnV3KpiXb8xaHn9q7DZSsbhjdGRm6HXnfqCX/vTu6r0upQc6jP3cZSXyBDcLcZGIF3gpYybu+O3Uzn8fLlJxJ3+3PN6Pb6LDbi8EZTP9B4kfCjTqyI1IQiEy8gSCjcNLK0yjLqYhqukI94xGehqqIWkKH24J3+MBZQ8vFIgBSMjL5c/g7UqJosl//9Fpdea6ozRc3deNIfP83ZIskInaCmT68eP2Iw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: --wqb8liXWozkhAkEw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave Martin wrote: > I'm coming round to the view that trying to provide absolute guarantees > about the signal frame size is unsustainable. x86 didn't, and got away > with it for some time... Maybe we should just get rid of the relevant > comments in headers, and water down guarantees in the SVE/SME > documentation to recommendations with no promise attached? I tend to agree, especially given that even within the fixed size our layout is variable. It creates contortions and realistically the big issue is the vector extensions rather than anything else. There we're kind of constrained in what we can do. --wqb8liXWozkhAkEw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAma+HasACgkQJNaLcl1U h9Aj1Qf/YNaa1FCiSI68LMMwxwE6eenm9OEl456cdnlqFBO9AkqUcrDmxhLHSH03 GXCM+GkBVn8BYFt9QFvMe7j1isn+eJhuaPVQV7bj6JGZb/5hw8Q2au78WGQDcfXK 7aAATdyMJlyl5xbWpzB5EP71BIpQ08XuxMbh1B1zcMjfJGlDdR7izJxhAWJekzr6 /FYhxfXLIINvWKD/QJw2mO3D61zS0CB3K0yZGKz811qViXyaoP9GrtRiLtglFkjU TSoEwNVwVI/TNLQ1owKssDBw76Lxj9jaoLoFLl+K+vfrEwS3PD71MB3MabBrdqNG kU8UB4OXrCNYhMJ+5rqw15bTFY+0sQ== =L2pp -----END PGP SIGNATURE----- --wqb8liXWozkhAkEw--