search for: swiotlb_bounc

Displaying 5 results from an estimated 5 matches for "swiotlb_bounc".

Did you mean: swiotlb_bounce
2009 Nov 08
9
2.6.31 xenified kernel - not ready for production
Hi, I just want to know if somebody use 2.6.31.4 xenified kernel (aka OpenSUSE) in production? We have been testing it on new Nehalem Xeon server for few weeks w/o any problem. But as soon we tried it on production machine - after several production domUs started - hard OS failure. We had to switch back to 2.6.18.8 - xen stock kernel. Peter _______________________________________________
2013 Sep 04
1
[PATCHv2] tracing/events: Add bounce tracing to swiotbl
...to detect when SWIOTLB has to do double buffering. Under Xen you can only see it indirectly in function_graph, when xen_swiotlb_map_page() doesn't stop after range_straddles_page_boundary(), but calls spinlock functions, memcpy() and xen_phys_to_bus() as well. This patch introduces the swiotlb:swiotlb_bounced event, which also prints out the following informations to help you find out why bouncing happened: dev_name: 0000:08:00.0 dma_mask=ffffffffffffffff dev_addr=9149f000 size=32768 swiotlb_force=0 If you use Xen, and (dev_addr + size + 1) > dma_mask, the buffer is out of the device's DMA ra...
2013 Sep 04
1
[PATCHv2] tracing/events: Add bounce tracing to swiotbl
...to detect when SWIOTLB has to do double buffering. Under Xen you can only see it indirectly in function_graph, when xen_swiotlb_map_page() doesn't stop after range_straddles_page_boundary(), but calls spinlock functions, memcpy() and xen_phys_to_bus() as well. This patch introduces the swiotlb:swiotlb_bounced event, which also prints out the following informations to help you find out why bouncing happened: dev_name: 0000:08:00.0 dma_mask=ffffffffffffffff dev_addr=9149f000 size=32768 swiotlb_force=0 If you use Xen, and (dev_addr + size + 1) > dma_mask, the buffer is out of the device's DMA ra...
2013 Sep 04
1
[PATCHv2] tracing/events: Add bounce tracing to swiotbl
...to detect when SWIOTLB has to do double buffering. Under Xen you can only see it indirectly in function_graph, when xen_swiotlb_map_page() doesn't stop after range_straddles_page_boundary(), but calls spinlock functions, memcpy() and xen_phys_to_bus() as well. This patch introduces the swiotlb:swiotlb_bounced event, which also prints out the following informations to help you find out why bouncing happened: dev_name: 0000:08:00.0 dma_mask=ffffffffffffffff dev_addr=9149f000 size=32768 swiotlb_force=0 If you use Xen, and (dev_addr + size + 1) > dma_mask, the buffer is out of the device's DMA ra...
2008 Dec 22
17
[PATCH 0 of 9] swiotlb: use phys_addr_t for pages
Hi all, Here''s a work in progress series whcih does a partial revert of the previous swiotlb changes, and does a partial replacement with Becky Bruce''s series. The most important difference is Becky''s use of phys_addr_t rather than page+offset to represent arbitrary pages. This turns out to be simpler. I didn''t replicate the map_single_page changes, since