linux-kernel - Re: [PATCH v12 2/2] x86/sgx: Add an attribute for the amount of SGX memory in a NUMA node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <YYjCA/69f/l3NwXn@kroah.com>
Date:   Mon, 8 Nov 2021 07:21:55 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>, reinette.chatre@...el.com,
        tony.luck@...el.com, nathaniel@...fian.com,
        linux-kernel@...r.kernel.org, linux-sgx@...r.kernel.org
Subject: Re: [PATCH v12 2/2] x86/sgx: Add an attribute for the amount of SGX
 memory in a NUMA node

On Sun, Nov 07, 2021 at 07:32:33PM +0200, Jarkko Sakkinen wrote:
> The amount of SGX memory on the system is determined by the BIOS and it
> varies wildly between systems.  It can be from dozens of MB's on desktops
> or VM's, up to many GB's on servers.  Just like for regular memory, it is
> sometimes useful to know the amount of usable SGX memory in the system.
> 
> Introduce CONFIG_HAVE_ARCH_NODE_DEV_GROUP opt-in flag to expose an arch
> specific attribute group, and add an attribute for the amount of SGX
> memory in bytes to each NUMA node:
> 
> /sys/devices/system/node/nodeX/x86/sgx_total_bytes
> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>