Re: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-26 Thread Borislav Petkov
On Thu, May 22, 2014 at 09:55:38PM +0200, Borislav Petkov wrote: > From: Borislav Petkov > Date: Thu, 22 May 2014 16:40:54 +0200 > Subject: [PATCH] x86, MCE: Kill CPU_POST_DEAD > > In conjunction with cleaning up CPU hotplug, we want to get rid of > CPU_POST_DEAD. Kill this instance here and redi

Re: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-22 Thread Srivatsa S. Bhat
On 05/23/2014 01:25 AM, Borislav Petkov wrote: > On Thu, May 22, 2014 at 03:50:21PM +, Luck, Tony wrote: So I think we can reduce it to just the one rwsem (with recursion) if we shoot CPU_POST_DEAD in the head. >>> >>> Here's the first bullet. Stressing my box here with Steve's hotplu

Re: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-22 Thread Srivatsa S. Bhat
On 05/23/2014 03:01 AM, Borislav Petkov wrote: > On Fri, May 23, 2014 at 02:43:31AM +0530, Srivatsa S. Bhat wrote: After you move the cmci_rediscover() call, it is now in a place where we are no longer ignoring frozen (i.e. the old placement did the rediscover even if the

Re: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-22 Thread Borislav Petkov
On Fri, May 23, 2014 at 02:43:31AM +0530, Srivatsa S. Bhat wrote: > >> After you move the cmci_rediscover() call, it is now in a place where we > >> are > >> no longer ignoring frozen (i.e. the old placement did the rediscover even > >> if the > >> CPU_TASKS_FROZEN bit was set - with the new plac

Re: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-22 Thread Srivatsa S. Bhat
On 05/23/2014 01:25 AM, Borislav Petkov wrote: > On Thu, May 22, 2014 at 03:50:21PM +, Luck, Tony wrote: So I think we can reduce it to just the one rwsem (with recursion) if we shoot CPU_POST_DEAD in the head. >>> >>> Here's the first bullet. Stressing my box here with Steve's hotplu

Re: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-22 Thread Borislav Petkov
On Thu, May 22, 2014 at 03:50:21PM +, Luck, Tony wrote: > >> So I think we can reduce it to just the one rwsem (with recursion) if we > >> shoot CPU_POST_DEAD in the head. > > > > Here's the first bullet. Stressing my box here with Steve's hotplug > > script seems to work fine. > > > > Tony, an

RE: [PATCH] x86, MCE: Kill CPU_POST_DEAD

2014-05-22 Thread Luck, Tony
>> So I think we can reduce it to just the one rwsem (with recursion) if we >> shoot CPU_POST_DEAD in the head. > > Here's the first bullet. Stressing my box here with Steve's hotplug > script seems to work fine. > > Tony, any objections? what was this comment referring to: /* intentionally i