Re: [PATCH v8 2/5] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-20 Thread Nicholas Piggin
On Sun, 19 Aug 2018 22:38:17 +0530 Mahesh J Salgaonkar wrote: > From: Mahesh Salgaonkar > > 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 inste

[PATCH v8 2/5] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-19 Thread Mahesh J Salgaonkar
From: Mahesh Salgaonkar 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. Otherwi