Thread (48 messages) 48 messages, 6 authors, 2017-01-13

Re: x86-64: Maintain 16-byte stack alignment

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2017-01-13 08:37:24
Also in: lkml

On Thu, Jan 12, 2017 at 12:08:07PM -0800, Andy Lutomirski wrote:
I think we have some inline functions that do asm volatile ("call
..."), and I don't see any credible way of forcing alignment short of
generating an entirely new stack frame and aligning that.  Ick.  This
A straight asm call from C should always work because gcc keeps
the stack aligned in the prologue.

The only problem with inline assembly is when you start pushing
things onto the stack directly.

Cheers,
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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