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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2014-07-15 16:52:30 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-07-22 07:55:55 +0200 |
| commit | dad6f37c2602e4af6c3aecfdb41f2d8bd4668163 (patch) | |
| tree | 6dbff4666fddea21b95c4c11cc58de6ec6a83f9d /arch | |
| parent | powerpc: Fix bugs in emulate_step() (diff) | |
| download | linux-dad6f37c2602e4af6c3aecfdb41f2d8bd4668163.tar.xz linux-dad6f37c2602e4af6c3aecfdb41f2d8bd4668163.zip | |
powerpc: subpage_protect: Increase the array size to take care of 64TB
We now support TASK_SIZE of 16TB, hence the array should be 8.
Fixes the below crash:
Unable to handle kernel paging request for data at address 0x000100bd
Faulting instruction address: 0xc00000000004f914
cpu 0x13: Vector: 300 (Data Access) at [c000000fea75fa90]
pc: c00000000004f914: .sys_subpage_prot+0x2d4/0x5c0
lr: c00000000004fb5c: .sys_subpage_prot+0x51c/0x5c0
sp: c000000fea75fd10
msr: 9000000000009032
dar: 100bd
dsisr: 40000000
current = 0xc000000fea6ae490
paca = 0xc00000000fb8ab00 softe: 0 irq_happened: 0x00
pid = 8237, comm = a.out
enter ? for help
[c000000fea75fe30] c00000000000a164 syscall_exit+0x0/0x98
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/mmu-hash64.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index 807014dde821..c2b4dcf23d03 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -22,6 +22,7 @@ */ #include <asm/pgtable-ppc64.h> #include <asm/bug.h> +#include <asm/processor.h> /* * Segment table @@ -496,7 +497,7 @@ extern void slb_set_size(u16 size); */ struct subpage_prot_table { unsigned long maxaddr; /* only addresses < this are protected */ - unsigned int **protptrs[2]; + unsigned int **protptrs[(TASK_SIZE_USER64 >> 43)]; unsigned int *low_prot[4]; }; |