Date: Thu, 10 Mar 2016 20:20:53 +0100
From: Borislav Petkov <bp@suse.de>
To: Toshi Kani <toshi.kani@hpe.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>,
        Richard Purdie <richard.purdie@linuxfoundation.org>,
        Toshi Kani <toshi.kani@hp.com>,
        Bruce Ashfield <bruce.ashfield@windriver.com>,
        "Hart, Darren" <darren.hart@intel.com>,
        "saul.wold" <saul.wold@intel.com>, linux-kernel@vger.kernel.org
Subject: Re: runtime regression with "x86/mm/pat: Emulate PAT when it is
 disabled"
Message-ID: <20160310192053.GD2194@pd.tnic>
References: <1457366596.15454.281.camel@hpe.com>
 <20160307210852.GC26051@windriver.com>
 <1457393912.15454.419.camel@hpe.com>
 <20160307235328.GD26051@windriver.com>
 <1457398578.15454.421.camel@hpe.com>
 <1457400913.15454.435.camel@hpe.com>
 <20160310144250.GG23251@windriver.com>
 <1457628591.15454.542.camel@hpe.com>
 <20160310172029.GA2194@pd.tnic>
 <1457640261.15454.551.camel@hpe.com>
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On Thu, Mar 10, 2016 at 01:04:21PM -0700, Toshi Kani wrote:
> I will send a patch that sets PAT disabled when MTRR is disabled.  This
> will solve the Paul's issue.  His qemu32 model does not support PAT,
> either.

It does, see my other mail. We need to figure out first why is
pat_init() being called as part of MTRR setup.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--