drm/nv50-nvc0: restrict memtype to those specified at creation time

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Upcoming patches are going to enable full support for buffers that keep
a constant GPU virtual address whenever they're validated for use by
the GPU.

In order for this to work properly while keeping support for large pages,
we need to know if it's ever going to be possible for a buffer to end
up in GART, and if so, disable large pages for the buffer's VMA.

This is a new restriction that's not present in earlier kernel's, but
should not break userspace as the current code never attempts to validate
buffers into a memtype other than it was created with.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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This commit is contained in:

Ben Skeggs 2011-02-10 13:41:01 +10:00

parent 6ba9a68317

commit db5c8e299a

3 changed files with 16 additions and 5 deletions

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8

drivers/gpu/drm/nouveau/nouveau_bo.c

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1

drivers/gpu/drm/nouveau/nouveau_drv.h

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12

drivers/gpu/drm/nouveau/nouveau_gem.c

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