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Message-ID: <CAE9FiQWRzmG7b+fzwzJKmK4Wjp3dkvu=07Q6mT97og4wsexeSA@mail.gmail.com>
Date: Fri, 14 Dec 2012 12:04:25 -0800
From: Yinghai Lu <yinghai@...nel.org>
To: "H. Peter Anvin" <hpa@...or.com>
Cc: Borislav Petkov <bp@...en8.de>,
"Yu, Fenghua" <fenghua.yu@...el.com>,
"mingo@...nel.org" <mingo@...nel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"hpa@...ux.intel.com" <hpa@...ux.intel.com>,
"linux-tip-commits@...r.kernel.org"
<linux-tip-commits@...r.kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Stefano Stabellini <Stefano.Stabellini@...citrix.com>
Subject: Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early update
ucode on Intel's CPU
On Fri, Dec 14, 2012 at 11:46 AM, H. Peter Anvin <hpa@...or.com> wrote:
>
> That patch doesn't apply on top of the merge of x86/mm2 and
> linus/master. A trivial fixup is totally nonfunctional -- no
> earlyprintk, just a null pointer death in setup_real_mode().
just saw linus pulled efi fix that is touching real_mode/init.c.
and there is something wrong with it.
will check that...
>
> I suspect we don't need init_level4_pgt at all and should just plan to
> get rid of it. Is there any reason we can't just build the proper
> kernel page table set in pagetable_init() and switch to it there?
then how to pass the info to AP?
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