From: "H. Peter Anvin" <hpa@zytor.com>
To: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Rene Herman <rene.herman@keyaccess.nl>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>,
Suresh B Siddha <suresh.b.siddha@intel.com>
Subject: Re: [PATCH 2/5] x86: PAT: fix ambiguous paranoia check in pat_init()
Date: Wed, 11 Jun 2008 10:35:41 -0700 [thread overview]
Message-ID: <48500CED.4020906@zytor.com> (raw)
In-Reply-To: <20080611094730.GB5889@alberich.amd.com>
Andreas Herrmann wrote:
>
> For Intel all family 0xf CPUs, and family 6 CPUs starting with model
> 15 are whitelisted.
>
Arg, sorry, I read the code brokenly. You're right, of course.
> There seem to be other Intel CPUs that advertise PAT support.
> See cpuinfo output at http://gentoo-wiki.com/Safe_Cflags
> E.g. Pentium M (model 13), Celeron (model 6), Pentium III (model 8).
> (Not sure how correct this information is, though)
Yes, those all have PAT enabled.
> Turn the white- into a blacklist for those remaining CPUs until they
> are verified?
Yes, that would be a suitable course of action; moving it to
Intel-specific code. Then the Intel people can worry about lifting the
remaining blacklisted CPUs.
-hpa
next prev parent reply other threads:[~2008-06-11 17:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-10 14:05 [PATCH 2/5] x86: PAT: fix ambiguous paranoia check in pat_init() Andreas Herrmann
2008-06-10 22:55 ` Rene Herman
2008-06-10 23:33 ` H. Peter Anvin
2008-06-11 9:47 ` Andreas Herrmann
2008-06-11 15:05 ` [PATCH] x86: enable PAT on (almost) all CPUs that advertise it Andreas Herrmann
2008-06-11 16:44 ` H. Peter Anvin
2008-06-11 17:35 ` H. Peter Anvin [this message]
2008-06-11 9:41 ` [PATCH 2/5] x86: PAT: fix ambiguous paranoia check in pat_init() Andreas Herrmann
2008-06-11 12:58 ` Rene Herman
2008-06-11 16:12 ` Andreas Herrmann
2008-06-12 4:32 ` Rene Herman
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