Re: [PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-08-01 Thread Nicholas Piggin
On Thu, 12 Jul 2018 15:41:13 +0200 Michal Suchánek wrote: > On Tue, 3 Jul 2018 08:08:14 +1000 > "Nicholas Piggin" wrote: > > > On Mon, 02 Jul 2018 11:17:06 +0530 > > Mahesh J Salgaonkar wrote: > > > > > From: Mahesh Salgaonkar > > > > > > On pseries, as of today system crashes if we get

Re: [PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-19 Thread Michael Ellerman
Michal Suchánek writes: > On Tue, 3 Jul 2018 08:08:14 +1000 > "Nicholas Piggin" wrote: >> On Mon, 02 Jul 2018 11:17:06 > +0530 >> Mahesh J Salgaonkar wrote: >> > From: Mahesh Salgaonkar >> > diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c >> > index

Re: [PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-12 Thread Michal Suchánek
On Tue, 3 Jul 2018 08:08:14 +1000 "Nicholas Piggin" wrote: > On Mon, 02 Jul 2018 11:17:06 +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

Re: [PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-04 Thread Michael Ellerman
Michal Suchánek writes: > On Tue, 3 Jul 2018 08:08:14 +1000 > Nicholas Piggin wrote: >> On Mon, 02 Jul 2018 11:17:06 +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.

Re: [PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-03 Thread Michal Suchánek
On Tue, 3 Jul 2018 08:08:14 +1000 Nicholas Piggin wrote: > On Mon, 02 Jul 2018 11:17:06 +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 v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-03 Thread Mahesh Jagannath Salgaonkar
On 07/03/2018 03:38 AM, Nicholas Piggin wrote: > On Mon, 02 Jul 2018 11:17:06 +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 >>

Re: [PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-02 Thread Nicholas Piggin
On Mon, 02 Jul 2018 11:17:06 +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

[PATCH v5 5/7] powerpc/pseries: flush SLB contents on SLB MCE errors.

2018-07-01 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.