From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
linux-kernel@vger.kernel.org, Krzysztof Helt <krzysztof.h1@wp.pl>
Subject: Re: [PATCH 5/6] x86: move mtrr cpu cap setting early in early_init_xxxx
Date: Thu, 4 Sep 2008 21:13:33 +0200 [thread overview]
Message-ID: <20080904191333.GD24990@elte.hu> (raw)
In-Reply-To: <1220312246-30879-5-git-send-email-yhlu.kernel@gmail.com>
* Yinghai Lu <yhlu.kernel@gmail.com> wrote:
> Krzysztof Helt <krzysztof.h1@wp.pl> found mtrr is not detected on k6-2
>
> root case:
> we move mtrr_bp_init early for mtrr trimming.
> and in early_detect, only read cap from cpuid, so some cpu doesn't have
> that bit in cpuid and need to set workaround bit will have problem.
>
> need to add early_init_xxxx to preset those bit before mtrr_bp_init
> for those earlier cpus.
>
> this patch is for 2.6.27
hm, not sure we can do it in v2.6.27 as it depends on the other CPU init
patches and that is a rather sensitive codepath. This problem should be
present in v2.6.26 too, right?
Ingo
next prev parent reply other threads:[~2008-09-04 19:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-01 23:37 [PATCH 1/6] pci: fix merging left out for BAR print out Yinghai Lu
2008-09-01 23:37 ` [PATCH 2/6] x86: split e820 reserved entries record to late v4 - fix v7 Yinghai Lu
2008-09-01 23:37 ` [PATCH 3/6] x86: unify using pci_mmcfg_insert_resource Yinghai Lu
2008-09-01 23:37 ` [PATCH 4/6] x86: delay early cpu initialization until cpuid is done Yinghai Lu
2008-09-01 23:37 ` [PATCH 5/6] x86: move mtrr cpu cap setting early in early_init_xxxx Yinghai Lu
2008-09-04 19:13 ` Ingo Molnar [this message]
2008-09-04 19:17 ` Yinghai Lu
2008-09-04 20:14 ` Krzysztof Helt
2008-09-06 15:51 ` Ingo Molnar
2008-09-01 23:37 ` [PATCH 6/6] x86: make (early)_identify_cpu more the same between 32bit and 64 bit Yinghai Lu
2008-09-09 18:45 ` [PATCH 1/6] pci: fix merging left out for BAR print out Jesse Barnes
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