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c=relaxed/simple; d=kernel.org; s=k20201202; t=1688653478; bh=O45ertu3AbL/0W9DK51Iqjup0+XJ/VyrW0PT/x/Zq0s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=SJSsx9hZKApwEzVdCFFpYNQt8mmt7MVaEkwDf5QwcsihmISLxyqwlVGpKsAr2O2uA wHqxfGhSXsoEpE/dmiE/XolVvmsgBa5QIlkyf2y9FSJQF0ZleU6L2PkPSAST/cHvKw q5z5g7BeLuabIkuOKJGc+Wb9q5/BosoQrhXmGOukiRytsB1b52ZgjtohiDVAjPcwBM PH1dsFOXBdLt0OAlkoYLZhs7FdOta5Wzn40KmvsZ21p3zYFhUjJgJZKOo04JW3ydb6 jh4RkkxrzG85J9QYC4Ax/z4ruy26AMnsA0GYiE8qSXdHdZS+ukv0RKj8FTYfj6WcLl j/t11Gg1Tn/EA== Date: Thu, 6 Jul 2023 15:24:26 +0100 From: Mark Brown To: "szabolcs.nagy@arm.com" Cc: "Edgecombe, Rick P" , "Xu, Pengfei" , "tglx@linutronix.de" , "linux-arch@vger.kernel.org" , "kcc@google.com" , "Lutomirski, Andy" , "nadav.amit@gmail.com" , "david@redhat.com" , "kirill.shutemov@linux.intel.com" , "Schimpe, Christina" , "linux-doc@vger.kernel.org" , "peterz@infradead.org" , "corbet@lwn.net" , "nd@arm.com" , "linux-kernel@vger.kernel.org" , "dethoma@microsoft.com" , "jannh@google.com" , "debug@rivosinc.com" , "mike.kravetz@oracle.com" , "bp@alien8.de" , "rdunlap@infradead.org" , "linux-api@vger.kernel.org" , "john.allen@amd.com" , "jamorris@linux.microsoft.com" , "arnd@arndb.de" , "rppt@kernel.org" , "bsingharora@gmail.com" , "x86@kernel.org" , "pavel@ucw.cz" , "andrew.cooper3@citrix.com" , "oleg@redhat.com" , "keescook@chromium.org" , "gorcunov@gmail.com" , "fweimer@redhat.com" , "Yu, Yu-cheng" , "hpa@zytor.com" , "mingo@redhat.com" , "hjl.tools@gmail.com" , "linux-mm@kvack.org" , "Syromiatnikov, Eugene" , "Torvalds, Linus" , "akpm@linux-foundation.org" , "dave.hansen@linux.intel.com" , "Yang, Weijiang" , "Eranian, Stephane" Subject: Re: [PATCH v9 23/42] Documentation/x86: Add CET shadow stack description Message-ID: References: <2a30ac58-d970-45c3-87d2-55396c0a83f9@sirena.org.uk> <0a9ade13b989ea881fd43fabbe5de1d248cf4218.camel@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="woDWu/1up2+/uYLd" Content-Disposition: inline In-Reply-To: X-Cookie: Don't read everything you believe. X-Rspamd-Queue-Id: DBBFD160015 X-Rspam-User: X-Stat-Signature: fdz86zr7r3fxy1ihtjtpabeopno58z51 X-Rspamd-Server: rspam01 X-HE-Tag: 1688653480-627936 X-HE-Meta: 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 +Fvr7UKl 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 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: --woDWu/1up2+/uYLd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jul 06, 2023 at 02:14:40PM +0100, szabolcs.nagy@arm.com wrote: > The 07/05/2023 20:29, Mark Brown wrote: > > Push and pop are one control, you get both or neither. > gcspopm is always available (esentially *ssp++, this is used > for longjmp). Ah, sorry - I misremembered there. You're right, it's only push that we have control over. --woDWu/1up2+/uYLd Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmSmzpkACgkQJNaLcl1U h9DnEQf7BcnGI2A9Hm92frxRo982dBeJJWDACtl7P//CR1MjaAoA5AAveA5J4QpS ochiNCQREYpdyJ4Kw0JmnYZ/BV00ndbzr57J6jiDCauoZePl25nAdlB+8cp7954v kcm4f8q960IqMWc6grZxlLjJkWOG7Il/WXkepOvR83pgiGmsSQXJwXRWvjs6vX38 nNlmgH28DtjqVKpVZwkLtrS3qiwHqpcoYnHGs65bzxB8JB2Xn+il3m5iCI8L4rz6 vSy2uJhTjam/bz8DTGFH31BOArTTV8zgc/t31UgWWFbCGoQ4zTSeUMAGmd8AHU7Y Z4DTcFiSEdIv/AjoWv2bJntWnEN8OQ== =eJ7T -----END PGP SIGNATURE----- --woDWu/1up2+/uYLd--