Messages in this thread | | | Subject | Re: BUG in drivers/dma/ioat/dma_v2.c:314 | From | David Woodhouse <> | Date | Wed, 30 Jun 2010 21:02:05 +0100 |
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On Wed, 2010-06-30 at 20:40 +0100, Williams, Dan J wrote: > From the dmesg: > > IOMMU 0: reg_base_addr fe710000 ver 1:0 cap 900000c2f0462 ecap e01 > > DMAR: DRHD base: 0x000000fe714000 flags: 0x0 > > IOMMU 1: reg_base_addr fe714000 ver 1:0 cap 900000c2f0462 ecap e01 > > DMAR: DRHD base: 0x000000fe719000 flags: 0x0 > > IOMMU 2: reg_base_addr fe719000 ver 1:0 cap 900000c2f0462 ecap e01 > > DMAR: DRHD base: 0x000000fe718000 flags: 0x1 > > IOMMU 3: reg_base_addr fe718000 ver 1:0 cap 900000c2f0462 ecap e01 > > Where we expect bit 54 to be set for the DMA iommu, and it does not > appear to show up.
So the BIOS is lying to us about which PCI devices are attached to which IOMMU?
-- David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation
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