Messages in this thread | | | Date | Fri, 4 Dec 2009 16:19:47 -0800 | From | Jesse Barnes <> | Subject | Re: [PATCH] pci: add pci_request_acs |
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On Fri, 4 Dec 2009 12:15:21 -0800 Chris Wright <chrisw@sous-sol.org> wrote:
> Commit ae21ee65e8bc228416bbcc8a1da01c56a847a60c "PCI: acs p2p upsteram > forwarding enabling" doesn't actually enable ACS. > > Add a function to pci core to allow an IOMMU to request that ACS > be enabled. The existing mechanism of using iommu_found() in the pci > core to know when ACS should be enabled doesn't actually work due to > initialization order; iommu has only been detected not initialized. > > Have Intel and AMD IOMMUs request ACS, and Xen does as well during > early init of dom0. > > Cc: Allen Kay <allen.m.kay@intel.com> > Cc: David Woodhouse <dwmw2@infradead.org> > Cc: Jeremy Fitzhardinge <jeremy@goop.org> > Cc: Joerg Roedel <joerg.roedel@amd.com> > Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Applied this one, thanks.
-- Jesse Barnes, Intel Open Source Technology Center
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