Re: Re: [PATCH] powerpc/64: Set LR to a non-NULL value in task pt_regs on scv entry

2024-02-02 Thread Naveen N Rao
On Fri, Feb 02, 2024 at 01:02:39PM +1100, Michael Ellerman wrote: > Segher Boessenkool writes: > > Hi! > > > > On Thu, Jan 25, 2024 at 05:12:28PM +0530, Naveen N Rao wrote: > >> diff --git a/arch/powerpc/kernel/interrupt_64.S > >> b/arch/powerpc/kernel/interrupt_64.S > >> index

Re: [PATCH] powerpc/64: Set LR to a non-NULL value in task pt_regs on scv entry

2024-02-01 Thread Michael Ellerman
Segher Boessenkool writes: > Hi! > > On Thu, Jan 25, 2024 at 05:12:28PM +0530, Naveen N Rao wrote: >> diff --git a/arch/powerpc/kernel/interrupt_64.S >> b/arch/powerpc/kernel/interrupt_64.S >> index bd863702d812..5cf3758a19d3 100644 >> --- a/arch/powerpc/kernel/interrupt_64.S >> +++

Re: [PATCH] powerpc/64: Set LR to a non-NULL value in task pt_regs on scv entry

2024-01-25 Thread Segher Boessenkool
Hi! On Thu, Jan 25, 2024 at 05:12:28PM +0530, Naveen N Rao wrote: > diff --git a/arch/powerpc/kernel/interrupt_64.S > b/arch/powerpc/kernel/interrupt_64.S > index bd863702d812..5cf3758a19d3 100644 > --- a/arch/powerpc/kernel/interrupt_64.S > +++ b/arch/powerpc/kernel/interrupt_64.S > @@ -53,6

[PATCH] powerpc/64: Set LR to a non-NULL value in task pt_regs on scv entry

2024-01-25 Thread Naveen N Rao
Nysal reported that userspace backtraces are missing in offcputime bcc tool. As an example: $ sudo ./bcc/tools/offcputime.py -uU Tracing off-CPU time (us) of user threads by user stack... Hit Ctrl-C to end. ^C write -python (9107) 8