aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/sparc64/mm/init.c5
-rw-r--r--arch/sparc64/mm/tsb.c1
-rw-r--r--include/asm-sparc64/mmu_context.h6
3 files changed, 7 insertions, 5 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 9bbd0bf6..a639393 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -639,9 +639,10 @@ void get_new_mmu_context(struct mm_struct *mm)
{
unsigned long ctx, new_ctx;
unsigned long orig_pgsz_bits;
+ unsigned long flags;
int new_version;
- spin_lock(&ctx_alloc_lock);
+ spin_lock_irqsave(&ctx_alloc_lock, flags);
orig_pgsz_bits = (mm->context.sparc64_ctx_val & CTX_PGSZ_MASK);
ctx = (tlb_context_cache + 1) & CTX_NR_MASK;
new_ctx = find_next_zero_bit(mmu_context_bmap, 1 << CTX_NR_BITS, ctx);
@@ -677,7 +678,7 @@ void get_new_mmu_context(struct mm_struct *mm)
out:
tlb_context_cache = new_ctx;
mm->context.sparc64_ctx_val = new_ctx | orig_pgsz_bits;
- spin_unlock(&ctx_alloc_lock);
+ spin_unlock_irqrestore(&ctx_alloc_lock, flags);
if (unlikely(new_version))
smp_new_mmu_context_version();
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 534ac28..f36799b 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -354,6 +354,7 @@ void tsb_grow(struct mm_struct *mm, unsigned long rss, gfp_t gfp_flags)
int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
+ spin_lock_init(&mm->context.lock);
mm->context.sparc64_ctx_val = 0UL;
diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h
index 4be40c5..ca36ea9 100644
--- a/include/asm-sparc64/mmu_context.h
+++ b/include/asm-sparc64/mmu_context.h
@@ -67,14 +67,14 @@ extern void __flush_tlb_mm(unsigned long, unsigned long);
/* Switch the current MM context. Interrupts are disabled. */
static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, struct task_struct *tsk)
{
- unsigned long ctx_valid;
+ unsigned long ctx_valid, flags;
int cpu;
- spin_lock(&mm->context.lock);
+ spin_lock_irqsave(&mm->context.lock, flags);
ctx_valid = CTX_VALID(mm->context);
if (!ctx_valid)
get_new_mmu_context(mm);
- spin_unlock(&mm->context.lock);
+ spin_unlock_irqrestore(&mm->context.lock, flags);
if (!ctx_valid || (old_mm != mm)) {
load_secondary_context(mm);