linux-kernel - Re: Re: [PATCH v9 08/15] x86/sgx: Implement EPC reclamation flows for cgroup

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Date: Tue, 20 Feb 2024 14:18:35 +0100
From: Michal Koutný <mkoutny@...e.com>
To: "Huang, Kai" <kai.huang@...el.com>
Cc: "hpa@...or.com" <hpa@...or.com>, 
	"tim.c.chen@...ux.intel.com" <tim.c.chen@...ux.intel.com>, "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>, 
	"x86@...nel.org" <x86@...nel.org>, "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>, 
	"jarkko@...nel.org" <jarkko@...nel.org>, "cgroups@...r.kernel.org" <cgroups@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "tglx@...utronix.de" <tglx@...utronix.de>, 
	"haitao.huang@...ux.intel.com" <haitao.huang@...ux.intel.com>, "Mehta, Sohil" <sohil.mehta@...el.com>, 
	"tj@...nel.org" <tj@...nel.org>, "mingo@...hat.com" <mingo@...hat.com>, 
	"bp@...en8.de" <bp@...en8.de>, "mikko.ylinen@...ux.intel.com" <mikko.ylinen@...ux.intel.com>, 
	"seanjc@...gle.com" <seanjc@...gle.com>, "anakrish@...rosoft.com" <anakrish@...rosoft.com>, 
	"Zhang, Bo" <zhanb@...rosoft.com>, "kristen@...ux.intel.com" <kristen@...ux.intel.com>, 
	"yangjie@...rosoft.com" <yangjie@...rosoft.com>, "Li, Zhiquan1" <zhiquan1.li@...el.com>, 
	"chrisyan@...rosoft.com" <chrisyan@...rosoft.com>
Subject: Re: Re: [PATCH v9 08/15] x86/sgx: Implement EPC reclamation flows
 for cgroup

On Tue, Feb 20, 2024 at 09:52:39AM +0000, "Huang, Kai" <kai.huang@...el.com> wrote:
> I am not sure, but is it possible or legal for an ancestor to have less limit
> than children?

Why not?
It is desired for proper hiearchical delegation and the tightest limit
of ancestors applies (cf memory.max).

Michal

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