Re: xen kernel 2.6.18 bug with a d-link DFE 580TX - pci hide

[Michael Kapp <tquarkk@isis-it.de>]

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Keir Fraser wrote:
> On 25/10/08 21:05, "Michael Kapp" <tquarkk@isis-it.de> wrote:
> 
>> ----------- [cut here ] --------- [please bite here ] ---------
>> Kernel BUG at arch/x86_64/kernel/../../i386/kernel/pci-dma-xen.c:377
> 
> What's at line 377 in that source file in your kernel source tree?

See attachment of the specific part from pci-dma-xen.c.

>  -- Keir

Regards,
Michael



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362 dma_addr_t
363 dma_map_single(struct device *dev, void *ptr, size_t size,
364            enum dma_data_direction direction)
365 {
366     dma_addr_t dma;
367
368     if (direction == DMA_NONE)
369         BUG();
370     WARN_ON(size == 0);
371
372     if (swiotlb) {
373         dma = swiotlb_map_single(dev, ptr, size, direction);
374     } else {
375         dma = gnttab_dma_map_page(virt_to_page(ptr)) +
376               offset_in_page(ptr);
377         IOMMU_BUG_ON(range_straddles_page_boundary(__pa(ptr), size));
378         IOMMU_BUG_ON(address_needs_mapping(dev, dma));
379     }
380
381     flush_write_buffers();
382     return dma;
383 }

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