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Re: [Xen-devel] [PATCH OSSTEST v2 18/20] Osstest/Debian: Add "clk_ignore_unused" to default command line

create !
title it arm: domain 0 disables clocks which are in fact being used

On Wed, 2014-10-29 at 16:39 +0000, Ian Jackson wrote:
> Ian Campbell writes ("[PATCH OSSTEST v2 18/20] Osstest/Debian: Add 
> "clk_ignore_unused" to default command line"):
> > This stops dom0 from messing with clocks which it should and is required on
> > some platforms. It's harmless even when not needed.
> This is pretty odd.  Doesn't this correspond to some kind of bug, in
> the dom0 kernel perhaps ?

dom0 is not aware that some clocks are actually in use (e.g. by the
hypervisor), so the bug is probably in the lack of some interface to
communicate this from Xen to dom0, or some other mechanism to gate this.

I think some or all of the above ought to be added to the commit
message, and perhaps in a comment too. Along with a reference to the bug
which this mail should be about to create. Would you like me to do
anything else?


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