[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 11 Nov 2015 22:32:29 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: Borislav Petkov <bp@...en8.de>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
"x86@...nel.org" <x86@...nel.org>
Subject: RE: [RFC PATCH 0/3] Machine check recovery when kernel accesses
poison
> If you know that it is in the nvdimm range, you can grade the error with
> lower severity...
Grading the severity isn't the main issue.
> Or do you mean that without the exception table we'll return back to the
> insn causing the error and loop indefinitely this way?
Yes. We need to NOT return to the instruction that faulted. We need to pick
a different return address. We need to do that inside the #MC handler.
The exception table does that for us.
-Tony
Powered by blists - more mailing lists