Re: [PATCH 0/2] x86: per-device dma_mapping_ops
- Date: Thu, 15 May 2008 11:25:11 -0700
- From: Alexis Bruemmer <alexisb@xxxxxxxxxx>
- Subject: Re: [PATCH 0/2] x86: per-device dma_mapping_ops
On Thu, 2008-05-15 at 18:16 +0900, FUJITA Tomonori wrote:
> On Thu, 15 May 2008 11:01:09 +0200
> Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:
>
> > FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> writes:
> >
> > > This patchset adds per-device dma_mapping_ops support for
> > > CONFIG_X86_64 like POWER architecture does. This change enables us to
> > > cleanly fix the Calgary IOMMU issue that some devices are not behind
> > > the IOMMU [1]. It also would be helpful to handle KVM PCI passthrough.
> >
> > This makes it basically impossible to do stack ops, which some
> > people have been doing.
>
> Seems that I misunderstand what those people want.
>
> What those people want to do and how the stack ops achieve it? Or can
> you tell me where their patches are?
Yes an explanation of stack ops, or a pointer to a patch set that
implements them would be very useful.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/