Re: [PATCH v3] cxl: Prevent adapter reset if an active context exists

2016-10-14 Thread Vaibhav Jain
Hi Mpe, Michael Ellerman writes: > This is arguably a change to the ABI, but I assume we're OK with that as > it's arguably a bug in the existing implementation? Yes cross checked with Fred and he is ok with this. > > If so do we have a Fixes: ? and/or should this go to stable? Yes and Yes. I wi

Re: [PATCH v3] cxl: Prevent adapter reset if an active context exists

2016-10-13 Thread Andrew Donnellan
On 13/10/16 22:08, Vaibhav Jain wrote: This patch prevents resetting the cxl adapter via sysfs in presence of one or more active cxl_context on it. This protects against an unrecoverable error caused by PSL owning a dirty cache line even after reset and host tries to touch the same cache line. In

Re: [PATCH v3] cxl: Prevent adapter reset if an active context exists

2016-10-13 Thread Michael Ellerman
Vaibhav Jain writes: > This patch prevents resetting the cxl adapter via sysfs in presence of > one or more active cxl_context on it. This protects against an > unrecoverable error caused by PSL owning a dirty cache line even after > reset and host tries to touch the same cache line. In case a fo

Re: [PATCH v3] cxl: Prevent adapter reset if an active context exists

2016-10-13 Thread Frederic Barrat
Hi Vaibhav, Le 13/10/2016 à 13:08, Vaibhav Jain a écrit : This patch prevents resetting the cxl adapter via sysfs in presence of one or more active cxl_context on it. This protects against an unrecoverable error caused by PSL owning a dirty cache line even after reset and host tries to touch th