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Date: Thu, 8 Aug 2013 19:49:06 +0200
From: Borislav Petkov <bp@...en8.de>
To: "Yu, Fenghua" <fenghua.yu@...el.com>
Cc: Torsten Kaiser <just.for.lkml@...glemail.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com>,
Johannes Hirte <johannes.hirte@....tu-ilmenau.de>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/5] x86, AMD: cleanup: merge common code in early
microcode loading
On Wed, Aug 07, 2013 at 11:34:01PM +0000, Yu, Fenghua wrote:
> > This check won't work when CPU0 is hot added. So we need to find a
> > better way to fix this.
> >
>
> Maybe need to change the check as follows to take care of CPU0 hot add case?
>
> if ((cpu && system_state == SYSTEM_BOOTING) || (system_state == SYSTEM_RUNNING))
> load_ucode_ap();
Ok, just for my own understanding - I haven't played with cpu hotadd yet
so when you do this, is the hot-added socket containing the BSP not cpu
0 anymore?
Or when you hot-remove the socket containing the BSP, another AP becomes
the BSP and preserves its old number?
Thanks.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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