Re: [PATCH 1/2] powerpc/64s: remplement power4_idle code in C
From: Michael Ellerman <hidden>
Date: 2020-01-29 05:23:51
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 itself. This is probably barely measurable on real hardware, but it keeps the link stack balanced. Tested with QEMU. Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/ed0bc98f8cbe4f8254759d333a47aedc816ff8c5 cheers