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| author | Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> | 2018-09-11 19:57:00 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-09-19 21:59:22 +1000 |
| commit | a43c1590426c44a5c6bbaf51b70a36a5c6d86914 (patch) | |
| tree | df756695fbf54f7aca9bf2d9f54160a13ffebe29 /arch/powerpc/platforms/pseries/setup.c | |
| parent | 04fce21c9db54695389200b50b0b7a7866232ba6 (diff) | |
| download | linux-a43c1590426c44a5c6bbaf51b70a36a5c6d86914.tar.gz linux-a43c1590426c44a5c6bbaf51b70a36a5c6d86914.tar.bz2 linux-a43c1590426c44a5c6bbaf51b70a36a5c6d86914.zip | |
powerpc/pseries: Flush SLB contents on SLB MCE errors.
On pseries, as of today system crashes if we get a machine check
exceptions due to SLB errors. These are soft errors and can be fixed
by flushing the SLBs so the kernel can continue to function instead of
system crash. We do this in real mode before turning on MMU. Otherwise
we would run into nested machine checks. This patch now fetches the
rtas error log in real mode and flushes the SLBs on SLB/ERAT errors.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Michal Suchanek <msuchanek@suse.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index ba1791fd3234..e03f62a78649 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -1017,6 +1017,7 @@ define_machine(pseries) { .calibrate_decr = generic_calibrate_decr, .progress = rtas_progress, .system_reset_exception = pSeries_system_reset_exception, + .machine_check_early = pseries_machine_check_realmode, .machine_check_exception = pSeries_machine_check_exception, #ifdef CONFIG_KEXEC_CORE .machine_kexec = pSeries_machine_kexec, |