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2f9e897353
linux/Documentation/x86
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Luis R. Rodriguez 2f9e897353 x86/mm/mtrr, pat: Document Write Combining MTRR type effects on PAT / non-PAT pages 
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.

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ville Syrjälä <syrjala@sci.fi>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: linux-fbdev@vger.kernel.org
Link: http://lkml.kernel.org/r/1430343851-967-3-git-send-email-mcgrof@do-not-panic.com
Link: http://lkml.kernel.org/r/1432628901-18044-10-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-27 14:40:59 +02:00
..
i386 doc: spelling error changes 2014-05-05 15:32:05 +02:00
x86_64 x86_64: add KASan support 2015-02-13 21:21:41 -08:00
00-INDEX Documentation/: update 00-INDEX files 2014-02-10 16:01:40 -08:00
boot.txt x86/mm/KASLR: Propagate KASLR status to kernel proper 2015-04-03 15:26:15 +02:00
early-microcode.txt x86, microcode, amd: Early microcode patch loading support for AMD 2013-05-30 20:19:25 -07:00
earlyprintk.txt doc: spelling error changes 2014-05-05 15:32:05 +02:00
entry_64.txt x86, entry: Switch stacks on a paranoid entry from userspace 2015-01-02 10:22:45 -08:00
exception-tables.txt Doc: move Documentation/exception.txt into x86 subdir 2009-07-10 19:10:32 -07:00
intel_mpx.txt x86, mpx: Give MPX a real config option prompt 2014-12-15 15:58:57 +01:00
mtrr.txt x86/mm/mtrr, pat: Document Write Combining MTRR type effects on PAT / non-PAT pages 2015-05-27 14:40:59 +02:00
pat.txt x86/mm/mtrr, pat: Document Write Combining MTRR type effects on PAT / non-PAT pages 2015-05-27 14:40:59 +02:00
tlb.txt x86/doc: Fix the 'tlb_single_page_flush_ceiling' sysconfig path 2014-08-10 09:09:26 +02:00
usb-legacy-support.txt x86: doc: move x86-generic documentation from Doc/x86/i386 2008-07-22 15:34:38 -04:00
zero-page.txt Documentation/x86: Fix path in zero-page.txt 2015-02-18 23:04:00 +01:00