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Chris Wilson d79e1bd676 drm/i915/pmu: Only use exclusive mmio access for gen7
On gen7, we have to avoid concurrent access to the same mmio cacheline,
and so coordinate all mmio access with the uncore->lock. However, for
pmu, we want to avoid perturbing the system and disabling interrupts
unnecessarily, so restrict the w/a to gen7 where it is requied to
prevent machine hangs.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191108103511.20951-2-chris@chris-wilson.co.uk
2019-11-08 11:37:03 +00:00
arch
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Documentation doc: Update header files names 2019-10-25 12:06:21 +01:00
drivers drm/i915/pmu: Only use exclusive mmio access for gen7 2019-11-08 11:37:03 +00:00
fs
include drm: Expose a method for creating anonymous struct file around drm_minor 2019-11-07 21:22:15 +00:00
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MAINTAINERS drm-misc-next for 5.5: 2019-10-11 09:30:53 +10:00
Makefile Linux 5.4-rc2 2019-10-06 14:27:30 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.