diff options
| author | Chris Dearman <chris@mips.com> | 2007-12-13 22:42:19 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-12-14 17:34:30 +0000 |
| commit | bbaf238b5f910f8f3dda4b96cf844f50b2dcc6fa (patch) | |
| tree | 5fe8f78dcc4ac82f468e4976f28e798b9052f6e1 /arch/mips | |
| parent | 4037500ebcfd172a15aed40caa847c52e9906712 (diff) | |
| download | talos-op-linux-bbaf238b5f910f8f3dda4b96cf844f50b2dcc6fa.tar.gz talos-op-linux-bbaf238b5f910f8f3dda4b96cf844f50b2dcc6fa.zip | |
[MIPS] Ensure that ST0_FR is never set on a 32 bit kernel
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/kernel/process.c | 3 | ||||
| -rw-r--r-- | arch/mips/kernel/traps.c | 6 |
2 files changed, 4 insertions, 5 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 11cb264f59ce..2c09a442e5e5 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -77,9 +77,8 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp) unsigned long status; /* New thread loses kernel privileges. */ - status = regs->cp0_status & ~(ST0_CU0|ST0_CU1|KU_MASK); + status = regs->cp0_status & ~(ST0_CU0|ST0_CU1|ST0_FR|KU_MASK); #ifdef CONFIG_64BIT - status &= ~ST0_FR; status |= test_thread_flag(TIF_32BIT_REGS) ? 0 : ST0_FR; #endif status |= KU_USER; diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 23e73d0650a3..fcae66752972 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -1317,12 +1317,12 @@ void __init per_cpu_trap_init(void) #endif if (current_cpu_data.isa_level == MIPS_CPU_ISA_IV) status_set |= ST0_XX; + if (cpu_has_dsp) + status_set |= ST0_MX; + change_c0_status(ST0_CU|ST0_MX|ST0_RE|ST0_FR|ST0_BEV|ST0_TS|ST0_KX|ST0_SX|ST0_UX, status_set); - if (cpu_has_dsp) - set_c0_status(ST0_MX); - #ifdef CONFIG_CPU_MIPSR2 if (cpu_has_mips_r2) { unsigned int enable = 0x0000000f; |
