linux-kernel - [PATCH v5 0/6] x86: address drivers that do not work with PAT

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Date:	Thu, 30 Apr 2015 13:25:14 -0700
From:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
To:	bp@...e.de, mingo@...e.hu, tglx@...utronix.de, hpa@...or.com,
	plagnioj@...osoft.com, tomi.valkeinen@...com,
	daniel.vetter@...el.com, airlied@...ux.ie
Cc:	dledford@...hat.com, awalls@...metrocast.net, syrjala@....fi,
	luto@...capital.net, mst@...hat.com, cocci@...teme.lip6.fr,
	linux-kernel@...r.kernel.org, "Luis R. Rodriguez" <mcgrof@...e.com>
Subject: [PATCH v5 0/6] x86: address drivers that do not work with PAT

From: "Luis R. Rodriguez" <mcgrof@...e.com>

This v5 drops the addition of new early_param_*() helpers
and their use on pat_enabled as we are sticking with
__read_mostly, and as per review this should be selectively
used only on well established hot paths. pat_enabled turns
out to be a common hot path, so we want to keep that. This
v5 also changes the pr_info() patch slightly to address the
feedback. The other patches do not change at all.

Luis R. Rodriguez (6):
  x86/mm/pat: use pr_info() and friends
  x86/mm/pat: redefine pat_enabled
  arch/x86/mm/pat: export pat_enabled()
  ivtv: use arch_phys_wc_add() and require PAT disabled
  IB/ipath: add counting for MTRR
  IB/ipath: use arch_phys_wc_add() and require PAT disabled

 arch/x86/include/asm/pat.h                    |  7 +--
 arch/x86/kernel/cpu/mtrr/main.c               |  2 +-
 arch/x86/mm/iomap_32.c                        |  2 +-
 arch/x86/mm/ioremap.c                         |  4 +-
 arch/x86/mm/pageattr.c                        |  2 +-
 arch/x86/mm/pat.c                             | 75 +++++++++++++--------------
 arch/x86/mm/pat_internal.h                    |  2 +-
 arch/x86/mm/pat_rbtree.c                      |  5 +-
 arch/x86/pci/i386.c                           |  6 +--
 drivers/infiniband/hw/ipath/Kconfig           |  3 ++
 drivers/infiniband/hw/ipath/ipath_driver.c    | 18 +++++--
 drivers/infiniband/hw/ipath/ipath_kernel.h    |  4 +-
 drivers/infiniband/hw/ipath/ipath_wc_x86_64.c | 43 ++++-----------
 drivers/media/pci/ivtv/Kconfig                |  3 ++
 drivers/media/pci/ivtv/ivtvfb.c               | 58 ++++++++-------------
 15 files changed, 103 insertions(+), 131 deletions(-)

-- 
2.3.2.209.gd67f9d5.dirty

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