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| author |   David S. Miller <davem@huronp11.davemloft.net> | 2008-02-06 03:50:26 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2008-02-06 04:12:25 -0800 |
| commit | 38192d52f159bc06b7f523800c10b583cdd661d5 (patch) | |
| tree | 4cf695d583c0a657133642c0299cbfa536e25663 /include/asm-sparc64 | |
| parent | [SPARC64]: Update defconfig. (diff) | |
| download | linux-dev-38192d52f159bc06b7f523800c10b583cdd661d5.tar.xz linux-dev-38192d52f159bc06b7f523800c10b583cdd661d5.zip | |
[SPARC64]: Temporarily remove IOMMU merging code.
Changeset fde6a3c82d67f592eb587be4d12222b0ae6d4321 ("iommu sg merging:
sparc64: make iommu respect the segment size limits") broke sparc64
because whilst it added the segment limiting code to the first pass of
SG mapping (in prepare_sg()) it did not add matching code to the
second pass handling (in fill_sg())
As a result the two passes disagree where the segment boundaries
should be, resulting in OOPSes, DMA corruption, and corrupted
superblocks.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64')
| -rw-r--r-- | include/asm-sparc64/io.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-sparc64/io.h b/include/asm-sparc64/io.h index c299b853b5ba..b6ece223562d 100644 --- a/include/asm-sparc64/io.h +++ b/include/asm-sparc64/io.h @@ -16,7 +16,7 @@ /* BIO layer definitions. */ extern unsigned long kern_base, kern_size; #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) -#define BIO_VMERGE_BOUNDARY 8192 +#define BIO_VMERGE_BOUNDARY 0 static inline u8 _inb(unsigned long addr) { |