Re: [PATCH 0/2] x86: per-device dma_mapping_ops

[FUJITA Tomonori]

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?
--
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/