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linux-sg2042
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fix sg_phys to use dma_addr_t 

x86_32 CONFIG_HIGHMEM64G with 5GB RAM hung when booting, after issuing
some "request_module: runaway loop modprobe binfmt-0000" messages in
trying to exec /sbin/init.

The binprm buf doesn't see the right ".ELF" header because sg_phys()
is providing the wrong physical addresses for high pages: a 32-bit
unsigned long is too small in this case, we need to use dma_addr_t.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Hugh Dickins 2007-10-25 09:55:05 +02:00 committed by Jens Axboe
parent 4f33a9d9a4
commit 85cdffcde0
1 changed files with 2 additions and 1 deletions
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3
include/linux/scatterlist.h
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@ -1,6 +1,7 @@
#ifndef _LINUX_SCATTERLIST_H #ifndef _LINUX_SCATTERLIST_H
#define _LINUX_SCATTERLIST_H #define _LINUX_SCATTERLIST_H
#include <asm/types.h>
#include <asm/scatterlist.h> #include <asm/scatterlist.h>
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/string.h> #include <linux/string.h>
@ -255,7 +256,7 @@ static inline void sg_init_table(struct scatterlist *sgl, unsigned int nents)
* on the sg page. * on the sg page.
* *
**/ **/
static inline unsigned long sg_phys(struct scatterlist *sg) static inline dma_addr_t sg_phys(struct scatterlist *sg)
{ {
return page_to_phys(sg_page(sg)) + sg->offset; return page_to_phys(sg_page(sg)) + sg->offset;
} }