Re: [PATCH v7 5/9] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-10 Thread Mahesh Jagannath Salgaonkar
On 08/08/2018 02:34 PM, Nicholas Piggin wrote: > On Tue, 07 Aug 2018 19:47:14 +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 >> flush

Re: [PATCH v7 5/9] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-10 Thread Mahesh Jagannath Salgaonkar
On 08/07/2018 10:24 PM, Michal Suchánek wrote: > Hello, > > > On Tue, 07 Aug 2018 19:47:14 +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

Re: [PATCH v7 5/9] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-08 Thread Nicholas Piggin
On Tue, 07 Aug 2018 19:47:14 +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

Re: [PATCH v7 5/9] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-07 Thread Michal Suchánek
Hello, On Tue, 07 Aug 2018 19:47:14 +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 fun

[PATCH v7 5/9] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-07 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