linux-kernel - Re: [dm-devel] [PATCH v3 01/12] crypto: LLVMLinux: Add macro to remove use of VLAIS in crypto code

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Message-ID: <CAHXqBFK=o2Q3CUPWaL_8TDBJbGjfEOx_HnQzooy33wuKWyu5Gw@mail.gmail.com>
Date:	Mon, 15 Sep 2014 10:06:54 +0200
From:	Michał Mirosław <mirqus@...il.com>
To:	device-mapper development <dm-devel@...hat.com>
Cc:	agk@...hat.com, clm@...com, David Miller <davem@...emloft.net>,
	fabf@...net.be, Herbert Xu <herbert@...dor.apana.org.au>,
	jbacik@...com, snitzer@...hat.com, tadeusz.struk@...el.com,
	thomas.lendacky@....com, linux-ima-user@...ts.sourceforge.net,
	qat-linux@...el.com, d.kasatkin@...sung.com,
	Bruce Allan <bruce.w.allan@...el.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	john.griffin@...el.com, linux-raid@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Behan Webster <behanw@...verseincode.com>,
	linux-crypto@...r.kernel.org, james.l.morris@...cle.com,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-ima-devel@...ts.sourceforge.net,
	Andrew Morton <akpm@...ux-foundation.org>,
	zohar@...ux.vnet.ibm.com, linux-btrfs@...r.kernel.org,
	"Serge E. Hallyn" <serge@...lyn.com>
Subject: Re: [dm-devel] [PATCH v3 01/12] crypto: LLVMLinux: Add macro to
 remove use of VLAIS in crypto code

2014-09-15 9:30 GMT+02:00  <behanw@...verseincode.com>:
[...]
> +#define SHASH_DESC_ON_STACK(shash, tfm)                                  \
> +       char __desc[sizeof(struct shash_desc) +                   \
> +               crypto_shash_descsize(tfm)] CRYPTO_MINALIGN_ATTR; \
> +       struct shash_desc *shash = (struct shash_desc *)__desc
> +

char shash##__desc[] or similar? Otherwise it won't work if you use
this macro twice in the same block.

Best Regards,
Michał Mirosław
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