diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2016-07-05 12:31:48 +1000 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-07-05 14:31:08 +1000 |
| commit | 073de86aa934d46d596a2367e7501da5500e5b86 (patch) | |
| tree | fce91960c6e41a66eb0c5198124201b76fb409bb /target-ppc/mmu-hash64.h | |
| parent | 651060aba79dc9d0cc77ac3921948ea78dba7409 (diff) | |
target-ppc: Simplify HPTE matching
ppc_hash64_pteg_search() explicitly checks each HPTE's VALID and
SECONDARY bits, then uses the HPTE64_V_COMPARE() macro to check the B field
and AVPN. However, a small tweak to HPTE64_V_COMPARE() means we can check
all of these bits at once with a suitable ptem value. So, consolidate all
the comparisons for simplicity.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'target-ppc/mmu-hash64.h')
| -rw-r--r-- | target-ppc/mmu-hash64.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target-ppc/mmu-hash64.h b/target-ppc/mmu-hash64.h index 7fcb555b47..154a306997 100644 --- a/target-ppc/mmu-hash64.h +++ b/target-ppc/mmu-hash64.h @@ -62,7 +62,7 @@ unsigned ppc_hash64_hpte_page_shift_noslb(PowerPCCPU *cpu, #define HPTE64_V_AVPN_SHIFT 7 #define HPTE64_V_AVPN 0x3fffffffffffff80ULL #define HPTE64_V_AVPN_VAL(x) (((x) & HPTE64_V_AVPN) >> HPTE64_V_AVPN_SHIFT) -#define HPTE64_V_COMPARE(x, y) (!(((x) ^ (y)) & 0xffffffffffffff80ULL)) +#define HPTE64_V_COMPARE(x, y) (!(((x) ^ (y)) & 0xffffffffffffff83ULL)) #define HPTE64_V_LARGE 0x0000000000000004ULL #define HPTE64_V_SECONDARY 0x0000000000000002ULL #define HPTE64_V_VALID 0x0000000000000001ULL |