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authorLinus Torvalds <torvalds@linux-foundation.org>2011-06-09 12:52:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-06-09 12:52:44 -0700
commit361932bf84657b5dc0779046c751f06998c0d81f (patch)
treed39ea8018bd35db9701d343411865529d89255a9 /drivers
parent90494cc567319cd53574306f3b94fb3c7ff8fe88 (diff)
parent5f98ecdbcef1920323d8777c0ba55dbd4335d3cf (diff)
Merge branch 'stable/xen-swiotlb.bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb-2.6
* '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.
Diffstat (limited to 'drivers')
-rw-r--r--drivers/xen/swiotlb-xen.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 65ea21a97492..6e8c15a23201 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -147,9 +147,15 @@ void __init xen_swiotlb_init(int verbose)
{
unsigned long bytes;
int rc;
-
- xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
- xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
+ unsigned long nr_tbl;
+
+ 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;