diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2008-01-21 18:01:43 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-01-25 22:52:54 +1100 |
| commit | 3ca6644e5cc6ee7700b158fd5b4e8c48899118c6 (patch) | |
| tree | 69a1e3f2840324d5e1b69c93423c195e7ebf2503 /arch/powerpc | |
| parent | bd83fbde5b87ba230db2ffdc70af563719792db1 (diff) | |
[POWERPC] Make IOMMU code safe for > 132 GB of memory
Currently the IOMMU code allocates one page for the segment table, that
isn't safe if we have more than 132 GB of RAM.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/cell/iommu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c index 7f45d59cdf2a..eb2a94b0dc4c 100644 --- a/arch/powerpc/platforms/cell/iommu.c +++ b/arch/powerpc/platforms/cell/iommu.c @@ -310,8 +310,8 @@ static void cell_iommu_setup_hardware(struct cbe_iommu *iommu, unsigned long siz { struct page *page; int ret, i; - unsigned long reg, segments, pages_per_segment, ptab_size, n_pte_pages; - unsigned long xlate_base; + unsigned long reg, segments, pages_per_segment, ptab_size, stab_size, + n_pte_pages, xlate_base; unsigned int virq; if (cell_iommu_find_ioc(iommu->nid, &xlate_base)) @@ -328,7 +328,8 @@ static void cell_iommu_setup_hardware(struct cbe_iommu *iommu, unsigned long siz __FUNCTION__, iommu->nid, segments, pages_per_segment); /* set up the segment table */ - page = alloc_pages_node(iommu->nid, GFP_KERNEL, 0); + stab_size = segments * sizeof(unsigned long); + page = alloc_pages_node(iommu->nid, GFP_KERNEL, get_order(stab_size)); BUG_ON(!page); iommu->stab = page_address(page); clear_page(iommu->stab); |