[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] VT-d faults with Integrated Intel graphics on 4.6
On Thu, Aug 27, 2015 at 11:06:30AM +0800, Chen, Tiejun wrote: > On 8/25/2015 10:43 PM, Konrad Rzeszutek Wilk wrote: > >On Tue, Aug 25, 2015 at 02:55:31PM +0800, Chen, Tiejun wrote: > >>On 8/25/2015 8:19 AM, Tamas K Lengyel wrote: > >>>Hi everyone, > >>>I saw some people passingly mention this on the list before but just in > >>>case it has been missed, my serial is also being spammed with the following > >>>printouts with both Xen 4.6 RC1 and the latest staging build: > >>> > >>>... > >>>(XEN) [VT-D]DMAR:[DMA Read] Request device [0000:00:02.0] fault addr > >>>33487d7000, iommu reg = ffff82c000201000 > >>>(XEN) [VT-D]DMAR: reason 06 - PTE Read access is not set > >>>(XEN) [VT-D]DMAR:[DMA Read] Request device [0000:00:02.0] fault addr > >>>33487d7000, iommu reg = ffff82c000201000 > >>>(XEN) [VT-D]DMAR: reason 06 - PTE Read access is not set > >>>(XEN) [VT-D]DMAR:[DMA Read] Request device [0000:00:02.0] fault addr > >>>33487d7000, iommu reg = ffff82c000201000 > >>>(XEN) [VT-D]DMAR: reason 06 - PTE Read access is not set > >>>(XEN) [VT-D]DMAR:[DMA Read] Request device [0000:00:02.0] fault addr > >>>33487d7000, iommu reg = ffff82c000201000 > >>>(XEN) [VT-D]DMAR: reason 06 - PTE Read access is not set > >>>(XEN) [VT-D]DMAR:[DMA Read] Request device [0000:00:02.0] fault addr > >>>2610742000, iommu reg = ffff82c000201000 > >>>(XEN) [VT-D]DMAR: reason 07 - Next page table ptr is invalid > >>>... > >>> > >> > >>What's your platform? BDW? And how much memory is set to your guest OS? > > > >Is see this as well. But oddly enough - only when I use the AMT feature > >(normally I just use serial console on the machine). > > > >The platform is /DQ67SW, BIOS > >SWQ6710H.86A.0066.2012.1105.1504 11/05/2012 > > > >There is no guest OS - this is initial domain. And I boot with 2GB: > > Released 0 page(s) > > > >Xen: [mem 0x0000000000000000-0x0000000000099fff] usable > >Xen: [mem 0x000000000009a800-0x00000000000fffff] reserved > >Xen: [mem 0x0000000000100000-0x000000001fffffff] usable > >Xen: [mem 0x0000000020000000-0x00000000201fffff] reserved > >Xen: [mem 0x0000000020200000-0x000000003fffffff] usable > >Xen: [mem 0x0000000040000000-0x00000000401fffff] reserved > >Xen: [mem 0x0000000040200000-0x0000000080465fff] usable > >Xen: [mem 0x0000000080466000-0x000000009e855fff] unusable > >Xen: [mem 0x000000009e856000-0x000000009e85efff] ACPI data > >Xen: [mem 0x000000009e85f000-0x000000009e8a9fff] ACPI NVS > >Xen: [mem 0x000000009e8aa000-0x000000009e8b1fff] unusable > >Xen: [mem 0x000000009e8b2000-0x000000009e9a4fff] reserved > >Xen: [mem 0x000000009e9a5000-0x000000009e9a6fff] unusable > >Xen: [mem 0x000000009e9a7000-0x000000009ebc5fff] reserved > >Xen: [mem 0x000000009ebc6000-0x000000009ebc6fff] unusable > >Xen: [mem 0x000000009ebc7000-0x000000009ebd6fff] reserved > >Xen: [mem 0x000000009ebd7000-0x000000009ebf4fff] ACPI NVS > >Xen: [mem 0x000000009ebf5000-0x000000009ec18fff] reserved > >Xen: [mem 0x000000009ec19000-0x000000009ec5bfff] ACPI NVS > >Xen: [mem 0x000000009ec5c000-0x000000009ee7bfff] reserved > >Xen: [mem 0x000000009ee7c000-0x000000009effffff] unusable > >Xen: [mem 0x000000009f800000-0x00000000bf9fffff] reserved > >Xen: [mem 0x00000000fec00000-0x00000000fec00fff] reserved > >Xen: [mem 0x00000000fed1c000-0x00000000fed3ffff] reserved > >Xen: [mem 0x00000000fed90000-0x00000000fed91fff] reserved > >Xen: [mem 0x00000000fee00000-0x00000000feefffff] reserved > >Xen: [mem 0x00000000ff000000-0x00000000ffffffff] reserved > >Xen: [mem 0x0000000100000000-0x000000043e5fffff] unusable > > > >> > >>Just at first glance to fault address, this seems be issued from some > > As you see those fault addresses are out of the normal memory range here. > > >>known erratas on BDS and SKL. > > > >I am runnig v4.2-rc8. > > So I really doubt this is related to some erratas. Currently the pre-fetch > unit of IOMMU unit dedicated to IGD can't work well on some platforms, so > you can see these wired faults. Do you have some ideas for a solution/patch? Thanks! _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |