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authorDavid Daney <ddaney@caviumnetworks.com>2010-02-08 12:27:00 -0800
committerRalf Baechle <ralf@linux-mips.org>2010-02-10 22:15:46 +0100
commit5b7efa898b357e6ebe4024c520e62024eb969b5f (patch)
tree9e16176be11ca256b501b7aaf945af3e08a4b540 /arch
parentc2d5b5e525a354987b9c3de3661133f982bf9ba0 (diff)
downloadlinux-linaro-stable-5b7efa898b357e6ebe4024c520e62024eb969b5f.tar.gz
MIPS: Don't probe reserved EntryHi bits.
The patch that adds cpu_probe_vmbits is erroneously writing to reserved bit 12. Since we are really only probing high bits, don't write this bit with a one. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Cc: Guenter Roeck <guenter.roeck@ericsson.com> Patchwork: http://patchwork.linux-mips.org/patch/949/ Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/kernel/cpu-probe.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9c187a64649b..758ad426c57f 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -287,9 +287,9 @@ static inline int __cpu_has_fpu(void)
static inline void cpu_probe_vmbits(struct cpuinfo_mips *c)
{
#ifdef __NEED_VMBITS_PROBE
- write_c0_entryhi(0x3ffffffffffff000ULL);
+ write_c0_entryhi(0x3fffffffffffe000ULL);
back_to_back_c0_hazard();
- c->vmbits = fls64(read_c0_entryhi() & 0x3ffffffffffff000ULL);
+ c->vmbits = fls64(read_c0_entryhi() & 0x3fffffffffffe000ULL);
#endif
}