From patchwork Mon Feb 8 20:27:00 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: MIPS: Don't probe reserved EntryHi bits. Date: Mon, 08 Feb 2010 19:27:00 -0000 From: David Daney X-Patchwork-Id: 949 Message-Id: <1265660820-5418-1-git-send-email-ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org, ralf@linux-mips.org Cc: David Daney , Guenter Roeck 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 CC: Guenter Roeck Signed-off-by: Guenter Roeck Acked-by: you meant. Patch applied. --- arch/mips/kernel/cpu-probe.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 2ff5f64..9ea5ca8 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 }