> 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
On Wed, Nov 11, 2015 at 01:48:04PM -0800, Luck, Tony wrote:
> No flag. We can search MCi_ADDR across the ranges to see whether this
> was a normal RAM error on non-volatile. But that doesn't make this patch
> moot. We still need to change the return address to go to the fixup code
> instead of back
On Wed, Nov 11, 2015 at 09:41:58PM +0100, Borislav Petkov wrote:
> On Tue, Nov 10, 2015 at 01:55:46PM -0800, Luck, Tony wrote:
> > I need to add more to the motivation part of this. The people who want
> > this are playing with NVDIMMs as storage. So think of many GBytes of
> > non-volatile memory
On Tue, Nov 10, 2015 at 01:55:46PM -0800, Luck, Tony wrote:
> I need to add more to the motivation part of this. The people who want
> this are playing with NVDIMMs as storage. So think of many GBytes of
> non-volatile memory on the source end of the memcpy(). People are used
> to disk errors just
On Tue, Nov 10, 2015 at 12:21:01PM +0100, Borislav Petkov wrote:
> Just a general, why-do-we-do-this, question: on big systems, the memory
> occupied by the kernel is a very small percentage compared to whole RAM,
> right? And yet we want to recover from there too? Not, say, kexec...
I need to add
On Mon, Nov 09, 2015 at 10:26:08AM -0800, Tony Luck wrote:
> This is a first draft to show the direction I'm taking to
> make it possible for the kernel to recover from machine
> checks taken while kernel code is executing.
Just a general, why-do-we-do-this, question: on big systems, the memory
oc
On Mon, Nov 9, 2015 at 10:26 AM, Tony Luck wrote:
> This is a first draft to show the direction I'm taking to
> make it possible for the kernel to recover from machine
> checks taken while kernel code is executing.
Simple test case to show it actually works. You need a Xeon E7 class system
and t
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