Messages in this thread | | | Subject | Re: [PATCH 0/2] x86: per-device dma_mapping_ops | From | Alexis Bruemmer <> | Date | Thu, 15 May 2008 11:25:11 -0700 |
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On Thu, 2008-05-15 at 18:16 +0900, FUJITA Tomonori wrote: > On Thu, 15 May 2008 11:01:09 +0200 > Andi Kleen <andi@firstfloor.org> wrote: > > > FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 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.
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