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| 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/mm/hash_utils_64.c | |
| parent | 67550080b8288ee9b61e132e8ebc87d563f9c516 (diff) | |
| download | linux-7aa0727f3302931e698b3a7979ae5b9a4600da4e.tar.bz2 | |
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/mm/hash_utils_64.c')
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 7d4ffd79cc82..3a292be2e079 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -803,16 +803,19 @@ unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap) #ifdef CONFIG_PPC_MM_SLICES unsigned int get_paca_psize(unsigned long addr) { - unsigned long index, slices; + u64 lpsizes; + unsigned char *hpsizes; + unsigned long index, mask_index; if (addr < SLICE_LOW_TOP) { - slices = get_paca()->context.low_slices_psize; + lpsizes = get_paca()->context.low_slices_psize; index = GET_LOW_SLICE_INDEX(addr); - } else { - slices = get_paca()->context.high_slices_psize; - index = GET_HIGH_SLICE_INDEX(addr); + return (lpsizes >> (index * 4)) & 0xF; } - return (slices >> (index * 4)) & 0xF; + hpsizes = get_paca()->context.high_slices_psize; + index = GET_HIGH_SLICE_INDEX(addr); + mask_index = index & 0x1; + return (hpsizes[index >> 1] >> (mask_index * 4)) & 0xF; } #else |