diff options
| -rw-r--r-- | arch/sparc/include/asm/spinlock_64.h | 17 | ||||
| -rw-r--r-- | arch/sparc64/kernel/etrap.S | 6 | ||||
| -rw-r--r-- | arch/sparc64/kernel/rtrap.S | 6 |
3 files changed, 12 insertions, 17 deletions
diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h index 120cfe4..fbac9d0 100644 --- a/arch/sparc/include/asm/spinlock_64.h +++ b/arch/sparc/include/asm/spinlock_64.h @@ -13,17 +13,12 @@ * and rebuild your kernel. */ -/* All of these locking primitives are expected to work properly - * even in an RMO memory model, which currently is what the kernel - * runs in. - * - * There is another issue. Because we play games to save cycles - * in the non-contention case, we need to be extra careful about - * branch targets into the "spinning" code. They live in their - * own section, but the newer V9 branches have a shorter range - * than the traditional 32-bit sparc branch variants. The rule - * is that the branches that go into and out of the spinner sections - * must be pre-V9 branches. +/* Because we play games to save cycles in the non-contention case, we + * need to be extra careful about branch targets into the "spinning" + * code. They live in their own section, but the newer V9 branches + * have a shorter range than the traditional 32-bit sparc branch + * variants. The rule is that the branches that go into and out of + * the spinner sections must be pre-V9 branches. */ #define __raw_spin_is_locked(lp) ((lp)->lock != 0) diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S index 29ce489..786b185 100644 --- a/arch/sparc64/kernel/etrap.S +++ b/arch/sparc64/kernel/etrap.S @@ -16,9 +16,9 @@ #include <asm/mmu.h> #define TASK_REGOFF (THREAD_SIZE-TRACEREG_SZ-STACKFRAME_SZ) -#define ETRAP_PSTATE1 (PSTATE_RMO | PSTATE_PRIV) +#define ETRAP_PSTATE1 (PSTATE_TSO | PSTATE_PRIV) #define ETRAP_PSTATE2 \ - (PSTATE_RMO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE) + (PSTATE_TSO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE) /* * On entry, %g7 is return address - 0x4. @@ -130,7 +130,7 @@ etrap_save: save %g2, -STACK_BIAS, %sp stx %g6, [%sp + PTREGS_OFF + PT_V9_G6] stx %g7, [%sp + PTREGS_OFF + PT_V9_G7] or %l7, %l0, %l7 - sethi %hi(TSTATE_RMO | TSTATE_PEF), %l0 + sethi %hi(TSTATE_TSO | TSTATE_PEF), %l0 or %l7, %l0, %l7 wrpr %l2, %tnpc wrpr %l7, (TSTATE_PRIV | TSTATE_IE), %tstate diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S index 97a993c..6892cf5 100644 --- a/arch/sparc64/kernel/rtrap.S +++ b/arch/sparc64/kernel/rtrap.S @@ -14,9 +14,9 @@ #include <asm/visasm.h> #include <asm/processor.h> -#define RTRAP_PSTATE (PSTATE_RMO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE) -#define RTRAP_PSTATE_IRQOFF (PSTATE_RMO|PSTATE_PEF|PSTATE_PRIV) -#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_RMO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG) +#define RTRAP_PSTATE (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE) +#define RTRAP_PSTATE_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV) +#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG) .text .align 32 |
