redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

powerpc/pseries: Optimize IOMMU setup

Browse source 
The previous commit will use the page-at-a-time hypervisor call for
setting up IOMMU entries when we are using 64k pages and setting up
one 64k page, even though that means 16 calls to the hypervisor, since
the hypervisor still works on 4k pages.  This optimizes this case by
using the multi-page IOMMU setup hypervisor call instead.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2005-12-05 14:19:10 +11:00
parent e8a167accb
commit 6fbb618f5d
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/powerpc/platforms/pseries/iommu.c
View file

@ -146,7 +146,7 @@ static void tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
union tce_entry tce, *tcep;
long l, limit;
if (npages == 1)
if (TCE_PAGE_FACTOR == 0 && npages == 1)
return tce_build_pSeriesLP(tbl, tcenum, npages, uaddr,
direction);