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Re: [PATCH] Make EFI watchdog behaviour configurable

From: Arthur Mesh
Subject: Re: [PATCH] Make EFI watchdog behaviour configurable
Date: Fri, 11 Sep 2015 08:57:41 -0700
User-agent: Mutt/1.5.23 (2014-03-12)

On Fri, Sep 11, 2015 at 06:24:30PM +0300, Andrei Borzenkov wrote:
> >> Why is it not enough? You can always add it to your grub.cfg.
> >
> > Well, it still leaves a window of time where the system operates w/o a 
> > watchdog.
> > It could be a problem if grub.cfg resides on a network file system, and is 
> > not
> > accessible, in which case the system would hang.
> I'm fine with making it controlled by parameter passed to grub 
> invocation or EFI variable. We discussed parameters several times but 
> did not come to definitive conclusion hos interface should look like.

BIOS wouldn't know when to tell GRUB to disable the watchdog. If it did,
BIOS wouldn't have to enable the watchdog to begin with.

EFI variables is a better idea, but unless we have a well defined
interface, it will get unwieldy very quickly..

Can we compromise and simply proceed with the efi-watchdog cli? If so,
I'll gladly submit a new patch.


Arthur Mesh <address@hidden>
Juniper Networks
+1 408 936-4968

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