diff options
| author | Anton Blanchard <anton@samba.org> | 2002-10-12 13:09:24 +1000 |
|---|---|---|
| committer | Anton Blanchard <anton@samba.org> | 2002-10-12 13:09:24 +1000 |
| commit | 7159673ed2abfbdcdb3fdff4a7e958a770998227 (patch) | |
| tree | 324c34c2c8939c84ac32020014c8fc3358a91925 /include | |
| parent | efc4b4580db56d9a377895938c18f0030a01e58c (diff) | |
ppc64: Fix pgd_index overflow in free_pgtables and move stack up to 2^41
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ppc64/a.out.h | 3 | ||||
| -rw-r--r-- | include/asm-ppc64/pgtable.h | 5 | ||||
| -rw-r--r-- | include/asm-ppc64/ppc32.h | 1 |
3 files changed, 4 insertions, 5 deletions
diff --git a/include/asm-ppc64/a.out.h b/include/asm-ppc64/a.out.h index 797fbd0e14d5..7e2b95f3cdce 100644 --- a/include/asm-ppc64/a.out.h +++ b/include/asm-ppc64/a.out.h @@ -30,8 +30,7 @@ struct exec #ifdef __KERNEL__ -/* 64-bit user address space is less PGDIR_SIZE due to pgd_index() bug. */ -#define STACK_TOP_USER64 (TASK_SIZE_USER64 - PGDIR_SIZE) +#define STACK_TOP_USER64 (TASK_SIZE_USER64) /* Give 32-bit user space a full 4G address space to live in. */ #define STACK_TOP_USER32 (TASK_SIZE_USER32) diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h index 03e4ece78907..80d3977cf73f 100644 --- a/include/asm-ppc64/pgtable.h +++ b/include/asm-ppc64/pgtable.h @@ -35,7 +35,7 @@ #define PTRS_PER_PMD (1 << PMD_INDEX_SIZE) #define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) -#define USER_PTRS_PER_PGD (TASK_SIZE_USER64 / PGDIR_SIZE) +#define USER_PTRS_PER_PGD (1024) #define FIRST_USER_PGD_NR 0 #define EADDR_SIZE (PTE_INDEX_SIZE + PMD_INDEX_SIZE + \ @@ -198,7 +198,8 @@ extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)]; * Find an entry in a page-table-directory. We combine the address region * (the high order N bits) and the pgd portion of the address. */ -#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD -1)) +/* to avoid overflow in free_pgtables we dont use PTRS_PER_PGD here */ +#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & 0x7ff) #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) diff --git a/include/asm-ppc64/ppc32.h b/include/asm-ppc64/ppc32.h index 2f84579b2b4c..dd26d20232f1 100644 --- a/include/asm-ppc64/ppc32.h +++ b/include/asm-ppc64/ppc32.h @@ -119,7 +119,6 @@ typedef struct siginfo32 { /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */ struct { unsigned int _addr; /* faulting insn/memory ref. */ - int _trapno; } _sigfault; /* SIGPOLL */ |