diff options
Diffstat (limited to 'arch/um/kernel/tlb.c')
| -rw-r--r-- | arch/um/kernel/tlb.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index cf7e0d4407f2..39608cccf2c6 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -162,9 +162,11 @@ int um_tlb_sync(struct mm_struct *mm) { pgd_t *pgd; struct vm_ops ops; - unsigned long addr = mm->context.sync_tlb_range_from, next; + unsigned long addr, next; int ret = 0; + guard(spinlock_irqsave)(&mm->context.sync_tlb_lock); + if (mm->context.sync_tlb_range_to == 0) return 0; @@ -177,6 +179,7 @@ int um_tlb_sync(struct mm_struct *mm) ops.unmap = unmap; } + addr = mm->context.sync_tlb_range_from; pgd = pgd_offset(mm, addr); do { next = pgd_addr_end(addr, mm->context.sync_tlb_range_to); |