diff options
| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2012-09-10 02:52:52 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-17 16:31:50 +1000 |
| commit | 7aa0727f3302931e698b3a7979ae5b9a4600da4e (patch) | |
| tree | e84d09c79e5be7fe03bbf339a42924d4fbe2095b /arch/powerpc/include | |
| parent | powerpc/mm: Make KERN_VIRT_SIZE not dependend on PGTABLE_RANGE (diff) | |
| download | linux-dev-7aa0727f3302931e698b3a7979ae5b9a4600da4e.tar.xz linux-dev-7aa0727f3302931e698b3a7979ae5b9a4600da4e.zip | |
powerpc/mm: Increase the slice range to 64TB
This patch makes the high psizes mask as an unsigned char array
so that we can have more than 16TB. Currently we support upto
64TB
Reviewed-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/mmu-hash64.h | 6 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/page_64.h | 6 |
2 files changed, 10 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index 6aeb4986a373..7cbd541f915f 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -460,7 +460,11 @@ typedef struct { #ifdef CONFIG_PPC_MM_SLICES u64 low_slices_psize; /* SLB page size encodings */ - u64 high_slices_psize; /* 4 bits per slice for now */ + /* + * Right now we support 64TB and 4 bits for each + * 1TB slice we need 32 bytes for 64TB. + */ + unsigned char high_slices_psize[32]; /* 4 bits per slice for now */ #else u16 sllp; /* SLB page size encoding */ #endif diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h index fed85e6290e1..6c9bef4cb6a0 100644 --- a/arch/powerpc/include/asm/page_64.h +++ b/arch/powerpc/include/asm/page_64.h @@ -82,7 +82,11 @@ extern u64 ppc64_pft_size; struct slice_mask { u16 low_slices; - u16 high_slices; + /* + * This should be derived out of PGTABLE_RANGE. For the current + * max 64TB, u64 should be ok. + */ + u64 high_slices; }; struct mm_struct; |