]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 755d664) | patch
powerpc/32: transfer can avoid saving r4/r5 over trace call
authorNicholas Piggin <npiggin@gmail.com>
Sat, 30 Jan 2021 13:08:20 +0000 (23:08 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 8 Feb 2021 13:02:09 +0000 (00:02 +1100)
commit73d7a97914f23397b012e851f6a1fe4061923a82
tree5852141852c3e55d503b75b8666afbcbb4b57ab7tree | snapshot
parent755d664174463791489dddf34c33308b61de68c3commit | diff
powerpc/32: transfer can avoid saving r4/r5 over trace call

Now that handlers get all registers from pt_regs, r4 and r5 are no
longer live here and may be clobbered.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-11-npiggin@gmail.com
arch/powerpc/kernel/entry_32.S diff | blob | history
Linux Kernel Source Tree.