linux-kernel - Re: 64-syscall args on 32-bit vs syscall()

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Message-ID: <1268858134.2335.198.camel@pasglop>
Date:	Thu, 18 Mar 2010 07:35:34 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ulrich Drepper <drepper@...hat.com>, munroesj@...ibm.com,
	David Miller <davem@...emloft.net>, ralf@...ux-mips.org,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...savvy.com, torvalds@...ux-foundation.org
Subject: Re: 64-syscall args on 32-bit vs syscall()

On Wed, 2010-03-17 at 11:30 -0700, H. Peter Anvin wrote:
> Again, this is *exactly* symbol versioning done by hand... we have 
> proper symbol versioning, let's use it.

Yeah, whatever, I don't mind what technique you use for the versionning,
ultimately, if the approach works, we can look at those details :-) We
-do- need the macro to strip the dummy argument though, unless we use
a slightly different technique which is to make the __sysno argument
itself 64-bit, which works as well I believe.

Cheers,
Ben.


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