diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 24a591b4dbe9..1237f13fed51 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -718,7 +718,8 @@ static void set_debug_reg_defaults(struct thread_struct *thread) { thread->hw_brk.address = 0; thread->hw_brk.type = 0; - set_breakpoint(&thread->hw_brk); + if (ppc_breakpoint_available()) + set_breakpoint(&thread->hw_brk); } #endif /* !CONFIG_HAVE_HW_BREAKPOINT */ #endif /* CONFIG_PPC_ADV_DEBUG_REGS */ @@ -815,9 +816,14 @@ void __set_breakpoint(struct arch_hw_breakpoint *brk) memcpy(this_cpu_ptr(¤t_brk), brk, sizeof(*brk)); if (cpu_has_feature(CPU_FTR_DAWR)) + // Power8 or later set_dawr(brk); - else + else if (!cpu_has_feature(CPU_FTR_ARCH_207S)) + // Power7 or earlier set_dabr(brk); + else + // Shouldn't happen due to higher level checks + WARN_ON_ONCE(1); } void set_breakpoint(struct arch_hw_breakpoint *brk) |