Displaying 2 results from an estimated 2 matches for "gnttab_dma_map_pag".
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gnttab_dma_map_page
2007 Jun 11
5
[PATCH][Linux] gnttab: make dma address conversion logic of gnttab dma arch specific.
...nsource.com/archives/html/xen-devel/2007-06/msg00324.html
# HG changeset patch
# User yamahata@valinux.co.jp
# Date 1181545986 -32400
# Node ID 69e2dd4e06c405a92717c5f1818f5096e1dc0bcd
# Parent d5e0eb7dd069c0ffc1854da81aa143ccfb0ad66e
make dma address conversion logic of gnttab dma arch specific.
gnttab_dma_map_page() and gnttab_dma_unmap_page() uses machine address
with dma address interchangebly.
However it doesn''t work with auto translated mode enabled (i.e. on ia64)
because
- bus address space(dma_addr_t) is different from machine address
space(maddr_t).
With the terminology in xen/include/p...
2012 Oct 12
13
Dom0 physical networking/swiotlb/something issue in 3.7-rc1
Hi Konrad,
The following patch causes fairly large packet loss when transmitting
from dom0 to the physical network, at least with my tg3 hardware, but I
assume it can impact anything which uses this interface.
I suspect that the issue is that the compound pages allocated in this
way are not backed by contiguous mfns and so things fall apart when the
driver tries to do DMA.
However I