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| author | David S. Miller <davem@davemloft.net> | 2006-01-31 18:32:44 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:21 -0800 |
| commit | 4753eb2ac7022b999e5e484f1a5dc001dba22bd3 (patch) | |
| tree | 138321ebd3b3c3aeb99517ec5158a65f556da774 | |
| parent | 96c6e0d8e2a0eb1338751598be47fa1ffed91704 (diff) | |
| download | op-kernel-dev-4753eb2ac7022b999e5e484f1a5dc001dba22bd3.zip op-kernel-dev-4753eb2ac7022b999e5e484f1a5dc001dba22bd3.tar.gz | |
[SPARC64]: Fix incorrect TSB lock bit handling.
The TSB_LOCK_BIT define is actually a special
value shifted down by 32-bits for the assembler
code macros.
In C code, this isn't what we want.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc64/mm/tsb.c | 2 | ||||
| -rw-r--r-- | include/asm-sparc64/tsb.h | 5 |
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c index 707af4b..e60547821 100644 --- a/arch/sparc64/mm/tsb.c +++ b/arch/sparc64/mm/tsb.c @@ -184,7 +184,7 @@ static void copy_tsb(struct tsb *old_tsb, unsigned long old_size, : "=r" (tag), "=r" (pte) : "r" (&old_tsb[i]), "i" (ASI_NUCLEUS_QUAD_LDD)); - if (!tag || (tag & TSB_TAG_LOCK)) + if (!tag || (tag & (1UL << TSB_TAG_LOCK_BIT))) continue; /* We only put base page size PTEs into the TSB, diff --git a/include/asm-sparc64/tsb.h b/include/asm-sparc64/tsb.h index 1f93b7d..09ab3aa 100644 --- a/include/asm-sparc64/tsb.h +++ b/include/asm-sparc64/tsb.h @@ -47,13 +47,14 @@ * possible solution is to use RCU for the freeing of the TSB. */ -#define TSB_TAG_LOCK (1 << (47 - 32)) +#define TSB_TAG_LOCK_BIT 47 +#define TSB_TAG_LOCK_HIGH (1 << (TSB_TAG_LOCK_BIT - 32)) #define TSB_MEMBAR membar #StoreStore #define TSB_LOCK_TAG(TSB, REG1, REG2) \ 99: lduwa [TSB] ASI_N, REG1; \ - sethi %hi(TSB_TAG_LOCK), REG2;\ + sethi %hi(TSB_TAG_LOCK_HIGH), REG2;\ andcc REG1, REG2, %g0; \ bne,pn %icc, 99b; \ nop; \ |
