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Diffstat (limited to 'arch/powerpc/kernel/traps.c')
-rw-r--r--arch/powerpc/kernel/traps.c44
1 files changed, 40 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index bd74fac169b..0ff4ab98d50 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -55,6 +55,7 @@
#endif
#include <asm/kexec.h>
#include <asm/ppc-opcode.h>
+#include <asm/rio.h>
#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
int (*__debugger)(struct pt_regs *regs) __read_mostly;
@@ -143,7 +144,6 @@ int die(const char *str, struct pt_regs *regs, long err)
#endif
printk("%s\n", ppc_md.name ? ppc_md.name : "");
- sysfs_printk_last_file();
if (notify_die(DIE_OOPS, str, regs, err, 255,
SIGSEGV) == NOTIFY_STOP)
return 1;
@@ -199,7 +199,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
} else if (show_unhandled_signals &&
unhandled_signal(current, signr) &&
printk_ratelimit()) {
- printk(regs->msr & MSR_SF ? fmt64 : fmt32,
+ printk(regs->msr & MSR_64BIT ? fmt64 : fmt32,
current->comm, current->pid, signr,
addr, regs->nip, regs->link, code);
}
@@ -221,7 +221,7 @@ void system_reset_exception(struct pt_regs *regs)
}
#ifdef CONFIG_KEXEC
- cpu_set(smp_processor_id(), cpus_in_sr);
+ cpumask_set_cpu(smp_processor_id(), &cpus_in_sr);
#endif
die("System Reset", regs, SIGABRT);
@@ -425,6 +425,12 @@ int machine_check_e500mc(struct pt_regs *regs)
unsigned long reason = mcsr;
int recoverable = 1;
+ if (reason & MCSR_BUS_RBERR) {
+ recoverable = fsl_rio_mcheck_exception(regs);
+ if (recoverable == 1)
+ goto silent_out;
+ }
+
printk("Machine check in kernel mode.\n");
printk("Caused by (from MCSR=%lx): ", reason);
@@ -500,6 +506,7 @@ int machine_check_e500mc(struct pt_regs *regs)
reason & MCSR_MEA ? "Effective" : "Physical", addr);
}
+silent_out:
mtspr(SPRN_MCSR, mcsr);
return mfspr(SPRN_MCSR) == 0 && recoverable;
}
@@ -508,6 +515,11 @@ int machine_check_e500(struct pt_regs *regs)
{
unsigned long reason = get_mc_reason(regs);
+ if (reason & MCSR_BUS_RBERR) {
+ if (fsl_rio_mcheck_exception(regs))
+ return 1;
+ }
+
printk("Machine check in kernel mode.\n");
printk("Caused by (from MCSR=%lx): ", reason);
@@ -909,6 +921,26 @@ static int emulate_instruction(struct pt_regs *regs)
return emulate_isel(regs, instword);
}
+#ifdef CONFIG_PPC64
+ /* Emulate the mfspr rD, DSCR. */
+ if (((instword & PPC_INST_MFSPR_DSCR_MASK) == PPC_INST_MFSPR_DSCR) &&
+ cpu_has_feature(CPU_FTR_DSCR)) {
+ PPC_WARN_EMULATED(mfdscr, regs);
+ rd = (instword >> 21) & 0x1f;
+ regs->gpr[rd] = mfspr(SPRN_DSCR);
+ return 0;
+ }
+ /* Emulate the mtspr DSCR, rD. */
+ if (((instword & PPC_INST_MTSPR_DSCR_MASK) == PPC_INST_MTSPR_DSCR) &&
+ cpu_has_feature(CPU_FTR_DSCR)) {
+ PPC_WARN_EMULATED(mtdscr, regs);
+ rd = (instword >> 21) & 0x1f;
+ mtspr(SPRN_DSCR, regs->gpr[rd]);
+ current->thread.dscr_inherit = 1;
+ return 0;
+ }
+#endif
+
return -EINVAL;
}
@@ -959,7 +991,7 @@ void __kprobes program_check_exception(struct pt_regs *regs)
* ESR_DST (!?) or 0. In the process of chasing this with the
* hardware people - not sure if it can happen on any illegal
* instruction or only on FP instructions, whether there is a
- * pattern to occurences etc. -dgibson 31/Mar/2003 */
+ * pattern to occurrences etc. -dgibson 31/Mar/2003 */
switch (do_mathemu(regs)) {
case 0:
emulate_single_step(regs);
@@ -1506,6 +1538,10 @@ struct ppc_emulated ppc_emulated = {
#ifdef CONFIG_VSX
WARN_EMULATED_SETUP(vsx),
#endif
+#ifdef CONFIG_PPC64
+ WARN_EMULATED_SETUP(mfdscr),
+ WARN_EMULATED_SETUP(mtdscr),
+#endif
};
u32 ppc_warn_emulated;