Re: [PATCH v6 5/8] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-02 Thread Nicholas Piggin
On Thu, 2 Aug 2018 10:30:08 +0530 Mahesh Jagannath Salgaonkar wrote: > On 08/01/2018 11:28 AM, Nicholas Piggin wrote: > > On Wed, 04 Jul 2018 23:28:21 +0530 > > Mahesh J Salgaonkar wrote: > > > >> From: Mahesh Salgaonkar > >> > >> On pseries, as of today system crashes if we get a machine ch

Re: [PATCH v6 5/8] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-01 Thread Mahesh Jagannath Salgaonkar
On 08/01/2018 11:28 AM, Nicholas Piggin wrote: > On Wed, 04 Jul 2018 23:28:21 +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 v6 5/8] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-31 Thread Nicholas Piggin
On Wed, 04 Jul 2018 23:28:21 +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 v6 5/8] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-10 Thread Michal Suchánek
Hello, On Wed, 04 Jul 2018 23:28:21 +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 func

[PATCH v6 5/8] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-04 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