Re: [PATCH 4/4] arm64: kgdb: Set PSTATE.SS to 1 to reenable single-step

Hi Douglas, On 2020/5/14 8:23, Doug Anderson wrote: (SNIP) >> diff --git a/arch/arm64/kernel/kgdb.c b/arch/arm64/kernel/kgdb.c >> index 3910ac06c261..093ad9d2e5e6 100644 >> --- a/arch/arm64/kernel/kgdb.c >> +++ b/arch/arm64/kernel/kgdb.c >> @@ -230,7 +230,8 @@ int kgdb_arch_handle_exception(int ex

Re: [PATCH 4/4] arm64: kgdb: Set PSTATE.SS to 1 to reenable single-step

Hi, On Sat, May 9, 2020 at 6:49 AM Wei Li wrote: > > After fixing wrongly single-stepping into the irq handler, when we execute > single-step in kdb/kgdb, we can see only the first step can work. > > Refer to the ARM Architecture Reference Manual (ARM DDI 0487E.a) D2.12, > i think PSTATE.SS=1 sho

[PATCH 4/4] arm64: kgdb: Set PSTATE.SS to 1 to reenable single-step

After fixing wrongly single-stepping into the irq handler, when we execute single-step in kdb/kgdb, we can see only the first step can work. Refer to the ARM Architecture Reference Manual (ARM DDI 0487E.a) D2.12, i think PSTATE.SS=1 should be set each step for transferring the PE to the 'Active-no