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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-10 17:44:18 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-10 23:30:40 +0300 |
| commit | c0e60347d44d5e06869a253de326373e976be1c7 (patch) | |
| tree | 9ec946219384465103acd8cb75f8ecb97649e394 /drivers/gpu/drm/i915/i915_perf.c | |
| parent | 8cbf89db294166cc13d90a89422605e0c9f8bbc2 (diff) | |
| download | linux-c0e60347d44d5e06869a253de326373e976be1c7.tar.xz | |
drm/i915/gt: Hold rpm wakeref before taking ggtt->vm.mutex
We need to hold the runtime-pm wakeref to update the global PTEs (as
they exist behind a PCI BAR). However, some systems invoke ACPI during
runtime resume and so require allocations, which is verboten inside the
vm->mutex. Ergo, we must not use intel_runtime_pm_get() inside the
mutex, but lift the call outside.
Closes: https://gitlab.freedesktop.org/drm/intel/issues/958
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200110144418.1415639-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_perf.c')
0 files changed, 0 insertions, 0 deletions