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Bug#773309: CONFIG_PSTORE not enabled for arm64



On Thu, 2014-12-18 at 20:08 +0000, Leif Lindholm wrote:
> On Thu, Dec 18, 2014 at 06:35:25PM +0000, Ian Campbell wrote:
> > > > Is PSTORE (going to be) a thing on arm64? (I'm not entirely sure what
> > > > pstore is, so sorry if this is a silly question).
> > > 
> > > I am actually not concerned about pstore itself, but rather by the
> > > lack of similarity between platforms.
> > 
> > Consistency is a worthwhile goal, but not at the expense of enabling
> > legacy x86 junk on new architectures where it can never have any
> > relevance. I don't know if pstore fits that bill, which is why I was
> > asking about it.
> > 
> > If pstore is going to be a useful thing on arm64 then of course we
> > should enable it. We should *not* enable it purely to gain the side
> > effect of loading efivars (the more so since as discussed below it seems
> > like efivars itself is a legacy interface).
> 
> pstore is not legacy nonsense (it's for storing system crash
> information persistently). I don't actively care only since I've also
> not heard anyone screaming for it.
[...]

systemd can pull crash logs out of pstore and add them to the journal
(and hence to syslog, by default).

The bug script in linux-image packages also offers to extract crash logs
from pstore.  (I don't think I've yet seen a bug report where this was
done, but then efi-pstore was disabled by default in the wheezy kernel.)

Ben.

-- 
Ben Hutchings
Absolutum obsoletum. (If it works, it's out of date.) - Stafford Beer

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