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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-05-19 10:54:30 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-06-08 07:36:22 +0300 |
| commit | 3b6d1eb7ea65f4aa64115cf9ba02c190e5c9f6de (patch) | |
| tree | ea983092d82099c94831e991c45b502e60843028 /arch | |
| parent | 9690c15742688e9cb5ee4aa0b08e458551ceea13 (diff) | |
| download | linux-3b6d1eb7ea65f4aa64115cf9ba02c190e5c9f6de.tar.xz | |
powerpc/mm/hash: Compute the segment size correctly for ISA 3.0
PowerISA 3.0 encodes the segment size in the second half of hash page
table entry. Update hpte_decode() accordingly.
Fixes: 50de596de8be ("powerpc/mm/hash: Add support for Power9 Hash")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/hash_native_64.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index d873f6507f72..40e05e7f43de 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -550,7 +550,11 @@ static void hpte_decode(struct hash_pte *hpte, unsigned long slot, } } /* This works for all page sizes, and for 256M and 1T segments */ - *ssize = hpte_v >> HPTE_V_SSIZE_SHIFT; + if (cpu_has_feature(CPU_FTR_ARCH_300)) + *ssize = hpte_r >> HPTE_R_3_0_SSIZE_SHIFT; + else + *ssize = hpte_v >> HPTE_V_SSIZE_SHIFT; + shift = mmu_psize_defs[size].shift; avpn = (HPTE_V_AVPN_VAL(hpte_v) & ~mmu_psize_defs[size].avpnm); |