[Xen-bugs] [Bug 168] kernel BUG at arch/xen/i386/kernel/pci-dma.c:30 (iommu_bug)!

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=168





------- Additional Comments From dbarrera@xxxxxxxxxx  2005-08-19 19:40 -------
(In reply to comment #11)
> 
> > dma_mask is ffffffff
> > dma_addr is 80011eb7000
> > Fatal DMA error! Please use 'swiotlb=force'
> > kernel BUG at arch/xen/i386/kernel/pci-dma.c:63 (dma_map_sg)!
> 
> Hmm, I suspect an NX bit is getting read out of a PTE and not being masked. 
> 
> Do you get any "bad L1 flags 8000000" messages when the machine boots?
> 

Yes.

Red Hat Enterprise Linux AS release 4 (Nahant)
Kernel 2.6.12-xen0 on an i686

lamb5 login: (XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
(XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
(XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
(XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
(XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
(XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
(XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 80000000
(XEN)
peth0: received packet with  own address as source address

Red Hat Enterprise Linux AS release 4 (Nahant)
Kernel 2.6.12-xen0 on an i686

lamb5 login:

> 
> 
> 
> 
> 
> 



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