1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 613cd83e8c0c..0777f042e400 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -98,6 +98,8 @@ static void flush_tlb_func(void *info)
 {
         struct flush_tlb_info *f = info;
 
+        inc_irq_stat(irq_tlb_count);
+
         if (f->flush_mm != this_cpu_read(cpu_tlbstate.active_mm))
                 return;
 
@@ -320,7 +322,7 @@ static ssize_t tlbflush_write_file(struct file *file,
         if (kstrtos8(buf, 0, &shift))
                 return -EINVAL;
 
-        if (shift > 64)
+        if (shift < -1 || shift >= BITS_PER_LONG)
                 return -EINVAL;
 
         tlb_flushall_shift = shift;