diff options
Diffstat (limited to 'arch/powerpc/kernel/mce.c')
| -rw-r--r-- | arch/powerpc/kernel/mce.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c index 8077b5fb18a7..fd90c0eda229 100644 --- a/arch/powerpc/kernel/mce.c +++ b/arch/powerpc/kernel/mce.c @@ -16,6 +16,7 @@ #include <linux/export.h> #include <linux/irq_work.h> #include <linux/extable.h> +#include <linux/ftrace.h> #include <asm/machdep.h> #include <asm/mce.h> @@ -571,9 +572,16 @@ EXPORT_SYMBOL_GPL(machine_check_print_event_info); * * regs->nip and regs->msr contains srr0 and ssr1. */ -long machine_check_early(struct pt_regs *regs) +long notrace machine_check_early(struct pt_regs *regs) { long handled = 0; + bool nested = in_nmi(); + u8 ftrace_enabled = this_cpu_get_ftrace_enabled(); + + this_cpu_set_ftrace_enabled(0); + + if (!nested) + nmi_enter(); hv_nmi_check_nonrecoverable(regs); @@ -582,6 +590,12 @@ long machine_check_early(struct pt_regs *regs) */ if (ppc_md.machine_check_early) handled = ppc_md.machine_check_early(regs); + + if (!nested) + nmi_exit(); + + this_cpu_set_ftrace_enabled(ftrace_enabled); + return handled; } |