linux-kernel - Re: [PATCH v7 03/15] cgroup/misc: Add SGX EPC resource type

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Date: Mon, 22 Jan 2024 22:18:01 +0200
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Haitao Huang" <haitao.huang@...ux.intel.com>,
 <dave.hansen@...ux.intel.com>, <tj@...nel.org>, <mkoutny@...e.com>,
 <linux-kernel@...r.kernel.org>, <linux-sgx@...r.kernel.org>,
 <x86@...nel.org>, <cgroups@...r.kernel.org>, <tglx@...utronix.de>,
 <mingo@...hat.com>, <bp@...en8.de>, <hpa@...or.com>,
 <sohil.mehta@...el.com>
Cc: <zhiquan1.li@...el.com>, <kristen@...ux.intel.com>, <seanjc@...gle.com>,
 <zhanb@...rosoft.com>, <anakrish@...rosoft.com>,
 <mikko.ylinen@...ux.intel.com>, <yangjie@...rosoft.com>
Subject: Re: [PATCH v7 03/15] cgroup/misc: Add SGX EPC resource type

On Mon Jan 22, 2024 at 7:20 PM EET, Haitao Huang wrote:
> From: Kristen Carlson Accardi <kristen@...ux.intel.com>
>
> Add SGX EPC memory, MISC_CG_RES_SGX_EPC, to be a valid resource type
> for the misc controller.
>
> Signed-off-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
> Co-developed-by: Haitao Huang <haitao.huang@...ux.intel.com>
> Signed-off-by: Haitao Huang <haitao.huang@...ux.intel.com>
> ---
> V6:
> - Split the original patch into this and the preceding one (Kai)
> ---
>  include/linux/misc_cgroup.h | 4 ++++
>  kernel/cgroup/misc.c        | 4 ++++
>  2 files changed, 8 insertions(+)
>
> diff --git a/include/linux/misc_cgroup.h b/include/linux/misc_cgroup.h
> index 541a5611c597..2f6cc3a0ad23 100644
> --- a/include/linux/misc_cgroup.h
> +++ b/include/linux/misc_cgroup.h
> @@ -17,6 +17,10 @@ enum misc_res_type {
>  	MISC_CG_RES_SEV,
>  	/* AMD SEV-ES ASIDs resource */
>  	MISC_CG_RES_SEV_ES,
> +#endif
> +#ifdef CONFIG_CGROUP_SGX_EPC
> +	/* SGX EPC memory resource */
> +	MISC_CG_RES_SGX_EPC,
>  #endif
>  	MISC_CG_RES_TYPES
>  };
> diff --git a/kernel/cgroup/misc.c b/kernel/cgroup/misc.c
> index 99d971ecc842..4c519423b071 100644
> --- a/kernel/cgroup/misc.c
> +++ b/kernel/cgroup/misc.c
> @@ -24,6 +24,10 @@ static const char *const misc_res_name[] = {
>  	/* AMD SEV-ES ASIDs resource */
>  	"sev_es",
>  #endif
> +#ifdef CONFIG_CGROUP_SGX_EPC
> +	/* Intel SGX EPC memory bytes */
> +	"sgx_epc",
> +#endif
>  };
>  
>  /* Root misc cgroup */

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko