In some real scenarios 'start' may not be less than 'end' like
maxphyaddr = 52.
Signed-off-by: Tiejun Chen <tiejun.c...@intel.com>
---
arch/x86/kvm/mmu.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index bde8ee7..0e98b5e 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -58,6 +58,8 @@
static inline u64 rsvd_bits(int s, int e)
{
+ if (unlikely(s > e))
+ return 0;
return ((1ULL << (e - s + 1)) - 1) << s;
}
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
