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| author |   YuanJunQing <yuanjunqing66@163.com> | 2020-05-27 14:11:30 +0800 |
|---|---|---|
| committer |   Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-05-27 13:11:49 +0200 |
| commit | 31e1b3efa802f97a17628dde280006c4cee4ce5e (patch) | |
| tree | 538ce79de97bf4469652e6531088cacd47ce5b5c | |
| parent | MIPS: mm: add page valid judgement in function pte_modify (diff) | |
| download | wireguard-linux-31e1b3efa802f97a17628dde280006c4cee4ce5e.tar.xz wireguard-linux-31e1b3efa802f97a17628dde280006c4cee4ce5e.zip | |
MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
Register "a1" is unsaved in this function,
when CONFIG_TRACE_IRQFLAGS is enabled,
the TRACE_IRQS_OFF macro will call trace_hardirqs_off(),
and this may change register "a1".
The changed register "a1" as argument will be send
to do_fpe() and do_msa_fpe().
Signed-off-by: YuanJunQing <yuanjunqing66@163.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
| -rw-r--r-- | arch/mips/kernel/genex.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index 8236fb291e3f..a1b966f3578e 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -476,20 +476,20 @@ NESTED(nmi_handler, PT_SIZE, sp) .endm .macro __build_clear_fpe + CLI + TRACE_IRQS_OFF .set push /* gas fails to assemble cfc1 for some archs (octeon).*/ \ .set mips1 SET_HARDFLOAT cfc1 a1, fcr31 .set pop - CLI - TRACE_IRQS_OFF .endm .macro __build_clear_msa_fpe - _cfcmsa a1, MSA_CSR CLI TRACE_IRQS_OFF + _cfcmsa a1, MSA_CSR .endm .macro __build_clear_ade |