linux-kernel - Re: [PATCH v2 00/12] x86/crypto: Fix RBP usage in several crypto .S files

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Message-ID: <20170921080554.GB7718@gondor.apana.org.au>
Date:   Thu, 21 Sep 2017 16:05:54 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     "David S. Miller" <davem@...emloft.net>, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Mathias Krause <minipli@...glemail.com>,
        Jussi Kivilinna <jussi.kivilinna@....fi>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-crypto@...r.kernel.org, Eric Biggers <ebiggers@...gle.com>,
        Andy Lutomirski <luto@...nel.org>, Jiri Slaby <jslaby@...e.cz>
Subject: Re: [PATCH v2 00/12] x86/crypto: Fix RBP usage in several crypto .S
 files

On Mon, Sep 18, 2017 at 02:41:59PM -0500, Josh Poimboeuf wrote:
> v2:
> - fix performance issues in sha256-avx2-asm.S and sha512-avx2-asm.S
>   (Eric)
> 
> Many of the x86 crypto functions use RBP as a temporary register.  This
> breaks frame pointer convention, and breaks stack traces when unwinding
> from an interrupt in the crypto code.
> 
> Convert most* of them to leave RBP alone.
> 
> These pass the crypto boot tests for me.  Any further testing would be
> appreciated!
> 
> [*] There are still a few crypto files left that need fixing, but the
>     fixes weren't trivial and nobody reported unwinder warnings about
>     them yet, so I'm skipping them for now.
> 
> Josh Poimboeuf (12):

All applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
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