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Merge branch 'stable/xen-swiotlb.bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb-2.6

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* 'stable/xen-swiotlb.bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb-2.6:
  swiotlb: Export swioltb_nr_tbl and utilize it as appropiate.
This commit is contained in:
Linus Torvalds
2011-06-09 12:52:44 -07:00
parent 90494cc567 5f98ecdbce
commit 361932bf84
3 changed files with 14 additions and 2 deletions
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10
drivers/xen/swiotlb-xen.c
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@@ -147,9 +147,15 @@ void __init xen_swiotlb_init(int verbose)
{
unsigned long bytes;
int rc;
unsigned long nr_tbl;
xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
nr_tbl = swioltb_nr_tbl();
if (nr_tbl)
xen_io_tlb_nslabs = nr_tbl;
else {
xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
}
bytes = xen_io_tlb_nslabs << IO_TLB_SHIFT;