From: Joerg Roedel <joerg.roedel@amd.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>,
tom.leiming@gmail.com, fujita.tomonori@lab.ntt.co.jp,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org
Subject: Re: [PATCH][RFC] asm-generic:remove calling flush_write_buffers() in dma_sync_*_for_cpu
Date: Mon, 29 Jun 2009 21:24:56 +0200 [thread overview]
Message-ID: <20090629192456.GC9401@amd.com> (raw)
In-Reply-To: <20090629201026.0f351013@lxorguk.ukuu.org.uk>
On Mon, Jun 29, 2009 at 08:10:26PM +0100, Alan Cox wrote:
> > X86_OOSTORE is defined for (MWINCHIP3D || MWINCHIPC6) && MTRR. I am not sure if
> > these chips have sfence.
> > It would also help to know what OOSTORE exactly means in the context of that
> > chip.
>
> Non uncached stores may be visible out of order on the bus.
Ah ok, thanks. I think we should document that somewhere. A help text for the
Kconfig entry comes to my mind for that purpose. I will send a patch for this.
Joerg
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next prev parent reply other threads:[~2009-06-29 19:26 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-28 14:39 [PATCH][RFC] asm-generic:remove calling flush_write_buffers() in dma_sync_*_for_cpu tom.leiming
2009-06-28 15:34 ` Arnd Bergmann
2009-06-29 12:31 ` Joerg Roedel
2009-06-29 13:51 ` Ming Lei
2009-06-29 14:45 ` Joerg Roedel
2009-06-29 14:54 ` Ming Lei
2009-06-29 15:44 ` Joerg Roedel
2009-06-29 16:22 ` Arnd Bergmann
2009-06-29 16:31 ` Alan Cox
2009-06-29 16:45 ` Arnd Bergmann
2009-06-29 17:16 ` Alan Cox
2009-06-30 12:34 ` Arnd Bergmann
2009-06-30 12:40 ` Alan Cox
2009-06-30 12:48 ` Arnd Bergmann
2009-06-30 13:09 ` Alan Cox
2009-06-30 13:38 ` Arnd Bergmann
2009-07-07 1:54 ` Ming Lei
2009-07-07 7:48 ` Russell King - ARM Linux
2009-07-07 13:43 ` Ming Lei
2009-07-07 14:06 ` Arnd Bergmann
2009-07-07 14:55 ` Ming Lei
2009-07-07 15:30 ` Arnd Bergmann
2009-07-07 17:36 ` Russell King - ARM Linux
2009-07-07 17:33 ` Russell King - ARM Linux
2009-06-29 18:47 ` Joerg Roedel
2009-06-29 19:10 ` Alan Cox
2009-06-29 19:24 ` Joerg Roedel [this message]
2009-06-29 18:48 ` Joerg Roedel
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