Messages in this thread Patch in this message | | | Subject | [Patch] i386 bootioremap / kexec fix | From | keith mannthey <> | Date | Thu, 21 Sep 2006 19:54:45 -0700 |
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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.
Signed-off-by: Keith Mannthey<kmannth@us.ibm.com> --- boot_ioremap.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-)
diff -urN linux-2.6.18-rc6-mm2-orig/arch/i386/mm/boot_ioremap.c linux-2.6.17/arch/i386/mm/boot_ioremap.c --- linux-2.6.18-rc6-mm2-orig/arch/i386/mm/boot_ioremap.c 2006-09-18 01:19:22.000000000 -0700 +++ linux-2.6.17/arch/i386/mm/boot_ioremap.c 2006-09-18 01:23:33.000000000 -0700 @@ -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) {
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