diff options
Diffstat (limited to 'arch/mips/kernel/traps.c')
| -rw-r--r-- | arch/mips/kernel/traps.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 4a1712b5a..3de85be24 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -619,17 +619,17 @@ static int simulate_rdhwr(struct pt_regs *regs, int rd, int rt) perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0); switch (rd) { - case 0: /* CPU number */ + case MIPS_HWR_CPUNUM: /* CPU number */ regs->regs[rt] = smp_processor_id(); return 0; - case 1: /* SYNCI length */ + case MIPS_HWR_SYNCISTEP: /* SYNCI length */ regs->regs[rt] = min(current_cpu_data.dcache.linesz, current_cpu_data.icache.linesz); return 0; - case 2: /* Read count register */ + case MIPS_HWR_CC: /* Read count register */ regs->regs[rt] = read_c0_count(); return 0; - case 3: /* Count register resolution */ + case MIPS_HWR_CCRES: /* Count register resolution */ switch (current_cpu_type()) { case CPU_20KC: case CPU_25KF: @@ -639,7 +639,7 @@ static int simulate_rdhwr(struct pt_regs *regs, int rd, int rt) regs->regs[rt] = 2; } return 0; - case 29: + case MIPS_HWR_ULR: /* Read UserLocal register */ regs->regs[rt] = ti->tp_value; return 0; default: @@ -704,6 +704,7 @@ asmlinkage void do_ov(struct pt_regs *regs) int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) { struct siginfo si = { 0 }; + struct vm_area_struct *vma; switch (sig) { case 0: @@ -744,7 +745,8 @@ int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) si.si_addr = fault_addr; si.si_signo = sig; down_read(¤t->mm->mmap_sem); - if (find_vma(current->mm, (unsigned long)fault_addr)) + vma = find_vma(current->mm, (unsigned long)fault_addr); + if (vma && (vma->vm_start <= (unsigned long)fault_addr)) si.si_code = SEGV_ACCERR; else si.si_code = SEGV_MAPERR; @@ -1859,6 +1861,7 @@ void __noreturn nmi_exception_handler(struct pt_regs *regs) #define VECTORSPACING 0x100 /* for EI/VI mode */ unsigned long ebase; +EXPORT_SYMBOL_GPL(ebase); unsigned long exception_handlers[32]; unsigned long vi_handlers[64]; @@ -2063,16 +2066,22 @@ static void configure_status(void) status_set); } +unsigned int hwrena; +EXPORT_SYMBOL_GPL(hwrena); + /* configure HWRENA register */ static void configure_hwrena(void) { - unsigned int hwrena = cpu_hwrena_impl_bits; + hwrena = cpu_hwrena_impl_bits; if (cpu_has_mips_r2_r6) - hwrena |= 0x0000000f; + hwrena |= MIPS_HWRENA_CPUNUM | + MIPS_HWRENA_SYNCISTEP | + MIPS_HWRENA_CC | + MIPS_HWRENA_CCRES; if (!noulri && cpu_has_userlocal) - hwrena |= (1 << 29); + hwrena |= MIPS_HWRENA_ULR; if (hwrena) write_c0_hwrena(hwrena); |