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[PATCH] powerpc: 64k pages vs. U3 iommu

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That DART (U3 iommu) code didn't properly scale the number of entries
when using !4k pages. That caused crashes when booting G5s with more
than 2Gb of RAM. This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2005-11-10 14:54:58 +11:00 committed by Paul Mackerras
parent 87655ff268
commit 47c2ac8cc3
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/sysdev/u3_iommu.c
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@ -226,7 +226,7 @@ static void iommu_table_u3_setup(void)
iommu_table_u3.it_busno = 0;
iommu_table_u3.it_offset = 0;
/* it_size is in number of entries */
iommu_table_u3.it_size = dart_tablesize / sizeof(u32);
iommu_table_u3.it_size = (dart_tablesize / sizeof(u32)) >> DART_PAGE_FACTOR;
/* Initialize the common IOMMU code */
iommu_table_u3.it_base = (unsigned long)dart_vbase;