Received-SPF: pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 6 Oct 2020 11:35:08 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Jeremy Linton <jeremy.linton@arm.com>
Cc:     linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org,
        ardb@kernel.org, will@kernel.org, catalin.marinas@arm.com,
        davem@davemloft.net, herbert@gondor.apana.org.au,
        linux-kernel@vger.kernel.org
Subject: Re: [BUG][PATCH] crypto: arm64: Avoid indirect branch to bti_c
Message-ID: <20201006103508.GA5259@sirena.org.uk>
References: <20201006034854.2277538-1-jeremy.linton@arm.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
        protocol="application/pgp-signature"; boundary="tKW2IUtsqtDRztdT"
Content-Disposition: inline
In-Reply-To: <20201006034854.2277538-1-jeremy.linton@arm.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Precedence: bulk


--tKW2IUtsqtDRztdT
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Mon, Oct 05, 2020 at 10:48:54PM -0500, Jeremy Linton wrote:
> The AES code uses a 'br x7' as part of a function called by
> a macro. That branch needs a bti_j as a target. This results
> in a panic as seen below. Instead of trying to replace the branch
> target with a bti_jc, lets replace the indirect branch with a
> bl/ret, bl sequence that can target the existing bti_c.

Reviewed-by: Mark Brown <broonie@kernel.org>

--tKW2IUtsqtDRztdT
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl98SFsACgkQJNaLcl1U
h9BMrwf/RiJaQYvD/q24Fy2YkxfBrOM7a14fYbCR6mSTUD1AauKZxhnZcdF18CgJ
EOJ5dddU832+k7MJxQIlLmtfYMFrP3wu6f+uxQH4Ft4q6MGXNhMjAJcmiGoZsVdG
5LCtaCxJrjzFMl7t30C9G1OCFU2YdBDVNeKVsgpgRROHKNfk7mnZJdxbX/HPNmkb
8mhjE4CazgyLRrp5goweWCi/nGc0uPKnfLqiGgJRpfEskB/y8jBvrQ3EaTEnnxFp
+I/Wzej1o4QCE1QKYYMQr0Y+lQsAih9kcvVDJgETlwyXgYgcTo3kL2TTCT9pMEaQ
qKa+msQKZvs+bWYZPCQp9Un+hZBzpg==
=LGy1
-----END PGP SIGNATURE-----

--tKW2IUtsqtDRztdT--