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| author | Breno Leitao <leitao@debian.org> | 2018-11-26 18:11:58 -0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-12-21 14:46:50 +1100 |
| commit | 63a0d6b03b8e6fdd8c8ce5eec0ac04ef8e67d63f (patch) | |
| tree | d684da9d4c8abd124ddcb37d061f483e3edd4cb7 /arch/powerpc/kernel/entry_64.S | |
| parent | e1c3743e1a20647c53b719dbf28b48f45d23f2cd (diff) | |
| download | linux-63a0d6b03b8e6fdd8c8ce5eec0ac04ef8e67d63f.tar.gz | |
powerpc/tm: Save MSR to PACA before RFID
As other exit points, move SRR1 (MSR) into paca->tm_scratch, so, if
there is a TM Bad Thing in RFID, it is easy to understand what was the
SRR1 value being used.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 7c2032e83ce7b4..5fe1431083a5ba 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -291,6 +291,10 @@ BEGIN_FTR_SECTION HMT_MEDIUM_LOW END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + std r8, PACATMSCRATCH(r13) +#endif + ld r13,GPR13(r1) /* only restore r13 if returning to usermode */ ld r2,GPR2(r1) ld r1,GPR1(r1) |