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Subject: Re: clarification about misc controller and capacity vs. max
Date: Tue, 1 Nov 2022 07:35:42 -1000
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Sender: Tejun Heo <htejun-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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To: "Accardi, Kristen C" <kristen.c.accardi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: "hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org" <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, "lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org" <lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>, "cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>

On Tue, Nov 01, 2022 at 05:11:13PM +0000, Accardi, Kristen C wrote:
> This is a bit of a deal breaker for the use of the misc controller for
> SGX EPC memory - we allow overcommit of the physical EPC memory as we
> have backing RAM that is used to swap. Would you be amenable to having
> a flag to ignore the total capacity value and allow for overcommit of
> the resource? If not I feel like we don't have a choice but to create a
> new controller.

Yeah, for sure. Maybe just introduce a special value (prolly u64 max) that
says that there's no limit. Or maybe just set it to total physical memory?

Thanks.

-- 
tejun