Messages in this thread |  | | Date | Tue, 5 May 2015 09:35:16 +0200 | From | "Luis R. Rodriguez" <> | Subject | Re: [PATCH v4 2/6] x86: document WC MTRR effects on PAT / non-PAT pages |
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On Mon, May 04, 2015 at 02:23:03PM +0200, Borislav Petkov wrote: > On Wed, Apr 29, 2015 at 02:44:07PM -0700, Luis R. Rodriguez wrote: > > From: "Luis R. Rodriguez" <mcgrof@suse.com> > > > > As part of the effort to phase out MTRR use document > > write-combining MTRR effects on pages with different > > non-PAT page attributes flags and different PAT entry > > values. Extend arch_phys_wc_add() documentation to > > clarify power of two sizes / boundary requirements as > > we phase out mtrr_add() use. > > > > Lastly hint towards ioremap_uc() for corner cases on > > device drivers working with devices with mixed regions > > where MTRR size requirements would otherwise not > > enable write-combining effective memory types. > > > > Cc: Toshi Kani <toshi.kani@hp.com> > > Cc: Jonathan Corbet <corbet@lwn.net> > > Cc: Dave Hansen <dave.hansen@linux.intel.com> > > Cc: Andy Lutomirski <luto@amacapital.net> > > Cc: Suresh Siddha <sbsiddha@gmail.com> > > Cc: Ingo Molnar <mingo@elte.hu> > > Cc: Thomas Gleixner <tglx@linutronix.de> > > Cc: Juergen Gross <jgross@suse.com> > > Cc: Daniel Vetter <daniel.vetter@ffwll.ch> > > Cc: Dave Airlie <airlied@redhat.com> > > Cc: Antonino Daplas <adaplas@gmail.com> > > Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> > > Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> > > Cc: Ville Syrjälä <syrjala@sci.fi> > > Cc: Mel Gorman <mgorman@suse.de> > > Cc: Vlastimil Babka <vbabka@suse.cz> > > Cc: Borislav Petkov <bp@suse.de> > > Cc: Davidlohr Bueso <dbueso@suse.de> > > Cc: linux-fbdev@vger.kernel.org > > Cc: linux-kernel@vger.kernel.org > > Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> > > --- > > Documentation/x86/mtrr.txt | 18 +++++++++++++++--- > > Documentation/x86/pat.txt | 40 +++++++++++++++++++++++++++++++++++++++- > > arch/x86/kernel/cpu/mtrr/main.c | 3 +++ > > 3 files changed, 57 insertions(+), 4 deletions(-) > > > > diff --git a/Documentation/x86/mtrr.txt b/Documentation/x86/mtrr.txt > > index cc071dc..a111a6c 100644 > > --- a/Documentation/x86/mtrr.txt > > +++ b/Documentation/x86/mtrr.txt > > @@ -1,7 +1,19 @@ > > MTRR (Memory Type Range Register) control > > -3 Jun 1999 > > -Richard Gooch > > -<rgooch@atnf.csiro.au> > > + > > +Richard Gooch <rgooch@atnf.csiro.au> - 3 Jun 1999 > > +Luis R. Rodriguez <mcgrof@do-not-panic.com> - April 9, 2015 > > + > > +=============================================================================== > > +Phasing MTRR use > > "Phasing out...".
Fixed all, will send another version.
Luis
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