diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2019-07-11 12:24:03 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-01-16 14:59:37 +1000 |
| commit | ed0bc98f8cbe4f8254759d333a47aedc816ff8c5 (patch) | |
| tree | 7e5768afb6d7e895930d578954d3c4061998cb9a /arch/powerpc/include/asm/pgtable.h | |
| parent | 30e813cf46ccaeea6508607632e49b4a1d743d2a (diff) | |
powerpc/64s: Reimplement power4_idle code in C
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>
[mpe: Move power4_fixup_nap back into exceptions-64s.S]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190711022404.18132-1-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm/pgtable.h')
0 files changed, 0 insertions, 0 deletions