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MIPS: Change type of asid_cache to unsigned long

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asid_cache must be unsigned long otherwise on 64 bit systems 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.

Initial patch by Yong Zhang <yong.zhang@windriver.com>

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: libin <huawei.libin@huawei.com>
This commit is contained in:
Ralf Baechle 2014-05-21 11:42:10 +02:00
parent 60b5f90d0f
commit e5eb925a18
1 changed files with 2 additions and 2 deletions
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4
arch/mips/include/asm/cpu-info.h
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@ -39,14 +39,14 @@ struct cache_desc {
#define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */
struct cpuinfo_mips {
unsigned int udelay_val;
unsigned int asid_cache;
unsigned long asid_cache;
/*
* Capability and feature descriptor structure for MIPS CPU
*/
unsigned long options;
unsigned long ases;
unsigned int udelay_val;
unsigned int processor_id;
unsigned int fpu_id;
unsigned int msa_id;