Re: [PATCH -v3 0/6] rcu,nohz,kvm: use RCU extended quiescent state when running KVM guest

From: Rik van Riel
Date: Mon Feb 09 2015 - 20:23:35 EST


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On 02/09/2015 08:15 PM, Will Deacon wrote:
> Hi Rik,
>
> On Mon, Feb 09, 2015 at 04:04:38PM +0000, riel@xxxxxxxxxx wrote:
>> Apologies to Catalin and Will for not fixing up ARM. I am not
>> familiar with ARM assembly, and not sure how to pass a constant
>> argument to a function from assembly code on ARM :)
>
> It's a bit of a faff getting enum values into asm -- we actually
> have to duplicate the definitions using #defines to get at the
> constants. Perhaps it would be cleaner to leave
> context_tracking_user_{enter,exit} intact as C wrappers around
> context_tracking_{enter,exit} passing the appropriate constant?
> That way we don't actually need to change the arch code at all.

If Paul and Frederic have no objections, I would be happy to do that.

Paul, Frederic?

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