On Thu, 11 Jul 2019 12:24:03 +1000, Nicholas Piggin wrote:
> This implements the tricky tracing and soft irq handling bits in C,
> leaving the low level bit to asm.
>
> A functional difference is that this redirects the interrupt exit to
> a return stub to execute blr, rather than the lr address i
On Thu, 2019-07-11 at 02:24:03 UTC, Nicholas Piggin wrote:
> This implements the tricky tracing and soft irq handling bits in C,
> leaving the low level bit to asm.
>
> A functional difference is that this redirects the interrupt exit to
> a return stub to execute blr, rather than the lr address i
Michael Ellerman's on August 18, 2019 1:49 pm:
> Nicholas Piggin writes:
>> diff --git a/arch/powerpc/kernel/exceptions-64s.S
>> b/arch/powerpc/kernel/exceptions-64s.S
>> index eee5bef736c8..64d5ffbb07d1 100644
>> --- a/arch/powerpc/kernel/exceptions-64s.S
>> +++ b/arch/powerpc/kernel/exceptions-
Nicholas Piggin writes:
> diff --git a/arch/powerpc/kernel/exceptions-64s.S
> b/arch/powerpc/kernel/exceptions-64s.S
> index eee5bef736c8..64d5ffbb07d1 100644
> --- a/arch/powerpc/kernel/exceptions-64s.S
> +++ b/arch/powerpc/kernel/exceptions-64s.S
> @@ -2286,15 +2286,6 @@ USE_FIXED_SECTION(virt_
This implements the tricky tracing and soft irq handling bits in C,
leaving the low level bit to asm.
A functional difference is that this redirects the interrupt exit to
a return stub to execute blr, rather than the lr address itself. This
is probably barely measurable on real hardware, but it ke
