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| author | Michael Neuling <mikey@neuling.org> | 2017-09-28 22:37:35 -0500 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-09-29 14:19:44 +1000 |
| commit | bca73f595a566f0262967535bb5b2ea9c4271d9a (patch) | |
| tree | 9624efb3f49de0d5125350d7530ed5c291e6d0c9 /arch/powerpc/kernel | |
| parent | d8bd9f3f0925d22726de159531bfe3774b5cacc6 (diff) | |
| download | lwn-bca73f595a566f0262967535bb5b2ea9c4271d9a.tar.gz lwn-bca73f595a566f0262967535bb5b2ea9c4271d9a.zip | |
powerpc: Fix workaround for spurious MCE on POWER9
In the recent commit d8bd9f3f0925 ("powerpc: Handle MCE on POWER9 with
only DSISR bit 30 set") I screwed up the bit number. It should be bit
25 (IBM bit 38).
Fixes: d8bd9f3f0925 ("powerpc: Handle MCE on POWER9 with only DSISR bit 30 set")
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/mce_power.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c index f523125b9d34..72f153c6f3fa 100644 --- a/arch/powerpc/kernel/mce_power.c +++ b/arch/powerpc/kernel/mce_power.c @@ -626,7 +626,7 @@ long __machine_check_early_realmode_p9(struct pt_regs *regs) { /* * On POWER9 DD2.1 and below, it's possible to get a machine check - * caused by a paste instruction where only DSISR bit 30 is set. This + * caused by a paste instruction where only DSISR bit 25 is set. This * will result in the MCE handler seeing an unknown event and the kernel * crashing. An MCE that occurs like this is spurious, so we don't need * to do anything in terms of servicing it. If there is something that @@ -634,7 +634,7 @@ long __machine_check_early_realmode_p9(struct pt_regs *regs) * correct DSISR so that it can be serviced properly. So detect this * case and mark it as handled. */ - if (SRR1_MC_LOADSTORE(regs->msr) && regs->dsisr == 0x40000000) + if (SRR1_MC_LOADSTORE(regs->msr) && regs->dsisr == 0x02000000) return 1; return mce_handle_error(regs, mce_p9_derror_table, mce_p9_ierror_table); |