asid_cache must be unsigned long otherwise on 64bit system
it will become 0 if the value in get_new_mmu_context()
reaches 0xffffffff and in the end the assumption of
ASID_FIRST_VERSION is not true anymore thus leads to
more dangerous things.
Reported-by: libin <huawei.libin@xxxxxxxxxx>
Signed-off-by: Yong Zhang <yong.zhang@xxxxxxxxxxxxx>
---
V2<-V1: Add the reporter.
arch/mips/include/asm/cpu-info.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h
index f6299be..ebcc2ed 100644
--- a/arch/mips/include/asm/cpu-info.h
+++ b/arch/mips/include/asm/cpu-info.h
@@ -40,7 +40,7 @@ struct cache_desc {
struct cpuinfo_mips {
unsigned int udelay_val;
- unsigned int asid_cache;
+ unsigned long asid_cache;
/*
* Capability and feature descriptor structure for MIPS CPU
--
1.7.9.5
