linux-kernel - Re: [PATCH 1/1] x86, e820: Remove direct mapping of reserved space for HT hole around 1TB

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Message-ID: <1350406050.2785.18.camel@lorien2>
Date:	Tue, 16 Oct 2012 10:47:30 -0600
From:	Shuah Khan <shuah.khan@...com>
To:	Jacob Shin <jacob.shin@....com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org, Yinghai Lu <yinghai@...nel.org>,
	shuahkhan@...il.com
Subject: Re: [PATCH 1/1] x86, e820: Remove direct mapping of reserved space
 for HT hole around 1TB

Jacob,

On Tue, 2011-10-11 at 17:09 -0500, Jacob Shin wrote:
> The entire HT hole and also the unused address range before that hole
> need to be excluded from direct mapping. Otherwise speculative
> accesses to that reserved region can happen which cause machine
> checks.

Has the HT support even been added? I have a system with HT memory
histing feature and I am unable to boot with 1TB. Has this work been
redone as discussed in this thread?

-- Shuah


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