From: "H. Peter Anvin" <hpa@zytor.com>
To: Andi Kleen <ak@suse.de>
Cc: zach@vmware.com, akpm@osdl.org, chrisl@vmware.com,
chrisw@osdl.org, Keir.Fraser@cl.cam.ac.uk,
linux-kernel@vger.kernel.org, m+Ian.Pratt@cl.cam.ac.uk,
mbligh@mbligh.org, pratap@vmware.com,
virtualization@lists.osdl.org, zwame@arm.linux.org.uk
Subject: Re: [PATCH 4/14] i386 / Clean up asm and volatile keywords in desc
Date: Tue, 16 Aug 2005 16:49:13 -0700 [thread overview]
Message-ID: <43027B79.9070702@zytor.com> (raw)
In-Reply-To: <20050816234205.GE27628@wotan.suse.de>
Andi Kleen wrote:
> On Wed, Aug 10, 2005 at 09:53:51PM -0700, zach@vmware.com wrote:
>
>>Stop using extra underscores on asm and volatiles, that is just silly.
>
> Actually the volatiles might be still useful. Or if you drop them
> at least add memory clobbers. I had sometimes bugs on x86-64
> with the compiler moving such assembly statements with invisible
> side effects around too aggressively and causing weird problems.
>
> Agreed on the underscores, I hate them too :)
>
Well, put volatiles in *unless* the only effect of an asm statement is
producing the output values.
-hpa
next prev parent reply other threads:[~2005-08-16 23:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-11 4:53 [PATCH 4/14] i386 / Clean up asm and volatile keywords in desc zach
2005-08-16 23:42 ` Andi Kleen
2005-08-16 23:49 ` H. Peter Anvin [this message]
2005-08-16 23:52 ` Chris Wright
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