From 38192d52f159bc06b7f523800c10b583cdd661d5 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 6 Feb 2008 03:50:26 -0800 Subject: [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 --- include/asm-sparc64/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-sparc64') 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) { -- cgit v1.2.3-59-g8ed1b