Messages in this thread | | | Subject | Re: [PATCH 4/5] Powerpc/hw-breakpoint: Optimize disable path | From | Ravi Bangoria <> | Date | Wed, 19 Jun 2019 11:44:50 +0530 |
| |
On 6/18/19 12:01 PM, Christophe Leroy wrote: >> diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c >> index f002d2ffff86..265fac9fb3a4 100644 >> --- a/arch/powerpc/kernel/process.c >> +++ b/arch/powerpc/kernel/process.c >> @@ -793,10 +793,22 @@ static inline int set_dabr(struct arch_hw_breakpoint *brk) >> return __set_dabr(dabr, dabrx); >> } >> +static int disable_dawr(void) >> +{ >> + if (ppc_md.set_dawr) >> + return ppc_md.set_dawr(0, 0); >> + >> + mtspr(SPRN_DAWRX, 0); > > And SPRN_DAWR ?
Setting DAWRx with 0 should be enough to disable the breakpoint.
| |