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[PATCH] i386 bootioremap / kexec fix

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With CONFIG_PHYSICAL_START set to a non default values the i386
boot_ioremap code calculated its pte index wrong and users of boot_ioremap
have their areas incorrectly mapped (for me SRAT table not mapped during
early boot).  This patch removes the addr < BOOT_PTE_PTRS constraint.

[ Keith says this is applicable to 2.6.16 and 2.6.17 as well ]

Signed-off-by: Keith Mannthey<kmannth@us.ibm.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: <stable@kernel.org>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
keith mannthey 2006-09-25 16:24:39 -07:00 committed by Linus Torvalds
parent 0b16f21f14
commit 24fd425edd
1 changed files with 5 additions and 2 deletions
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7
arch/i386/mm/boot_ioremap.c
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@ -29,8 +29,11 @@
*/
#define BOOT_PTE_PTRS (PTRS_PER_PTE*2)
#define boot_pte_index(address) \
(((address) >> PAGE_SHIFT) & (BOOT_PTE_PTRS - 1))
static unsigned long boot_pte_index(unsigned long vaddr)
{
return __pa(vaddr) >> PAGE_SHIFT;
}
static inline boot_pte_t* boot_vaddr_to_pte(void *address)
{