提交 · 3943875e7b73fdd94dd9e911d69f0cee9ab66a89 · openeuler / Kernel

13 11月, 2013 1 次提交

drm/ttm: Fix vma page_prot bit manipulation · 3943875e

由 Thomas Hellstrom 提交于 11月 06, 2013

Fix a long-standing TTM issue where we manipulated the vma page_prot
bits while mmap_sem was taken in read mode only. We now make a local
copy of the vma structure which we pass when we set the ptes.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NJerome Glisse <jglisse@redhat.com>

3943875e

06 11月, 2013 39 次提交

drm/ttm: Fix memory type compatibility check · 59c8e663

由 Thomas Hellstrom 提交于 10月 28, 2013

Also check the busy placements before deciding to move a buffer object.
Failing to do this may result in a completely unneccessary move within a
single memory type.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NJakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org

59c8e663

drm/ttm: Fix ttm_bo_move_memcpy · da95c788

由 Thomas Hellstrom 提交于 10月 30, 2013

All error paths will want to keep the mm node, so handle this at the
function exit. This fixes an ioremap failure error path.
Also add some comments to make the function a bit easier to understand.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NJakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org

da95c788

drm/ttm: Handle in-memory region copies · 9a0599dd

由 Jakob Bornecrantz 提交于 10月 30, 2013

Fix the case where the ttm pointer may be NULL causing
a NULL pointer dereference.
Signed-off-by: NJakob Bornecrantz <jakob@vmware.com>
Signed-off-by: NThomas Hellström <thellstrom@vmware.com>
Cc: stable@vger.kernel.org

9a0599dd

drm/ttm: Make NO_EVICT bos available to shrinkers pending destruction · 15205fbc

由 Thomas Hellstrom 提交于 10月 10, 2013

NO_EVICT bos that are not idle when all references are dropped are put on
the delayed destroy list. However, since they are not on LRU lists, they
are not available to shrinkers at that point, and buffers on the delayed
destroy list are not checked very often for idle.

So when these buffers are put on the delayed destroy list, clear the
NO_EVICT flag and put them on the right LRU list. This way they are
immediately available for eviction or shrinkers and will not cause false
OOMS.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NJakob Bornecrantz <jakob@vmware.com>

15205fbc

drm/ttm: Allow vm fault retries · cbe12e74

由 Thomas Hellstrom 提交于 10月 09, 2013

Make use of the FAULT_FLAG_ALLOW_RETRY flag to allow dropping the
mmap_sem while waiting for bo idle.

FAULT_FLAG_ALLOW_RETRY appears to be primarily designed for disk waits
but should work just as fine for GPU waits..
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NJakob Bornecrantz <jakob@vmware.com>

cbe12e74

qxl: add a connector property to denote hotplug should rescan modes. · 4695b039

由 Dave Airlie 提交于 10月 11, 2013

So GNOME userspace has an issue with when it rescans for modes on hotplug
events, if the monitor has no EDID it assumes that nothing has changed on
EDID as with real hw we'd never have new modes without a new EDID, and they
kind off rely on the behaviour now, however with virtual GPUs we would
like to rescan the modes and get a new preferred mode on hotplug events
to handle dynamic guest resizing (where you resize the host window and the
guest resizes with it).

This is a simple property we can make userspace watch for to trigger new
behaviour based on it, and can be used to replaced EDID hacks in virtual
drivers.

Acked-by: Marc-André Lureau <marcandre.lureau@gmail.com> (on irc)
Signed-off-by: NDave Airlie <airlied@redhat.com>

4695b039

drm: delay minor destruction to drm_dev_free() · 8f6599da

由 David Herrmann 提交于 10月 20, 2013

Instead of freeing minors in drm_dev_unregister(), we only unplug them and
delay the free to drm_dev_free(). Note that if drm_dev_register() has
never been called, minors are NULL and this has no effect.

This change is needed to allow early device unregistration. If we want to
call drm_dev_unregister() on live devices, we need to guarantee that
minors are still valid (but unplugged). This way, any open file can still
access file_priv->minor->dev to get the DRM device. However, the minor is
unplugged so no new users can occur.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

8f6599da

drm: remove minor-id during unplug · f67e946b

由 David Herrmann 提交于 10月 20, 2013

Don't delay minor removal to drm_put_minor(). Otherwise, user-space can
still open the minor and cause the kernel to oops. Instead, remove the
minor during unplug so any new open() will fail to access this minor.

Note that open() and drm_unplug_minor() are both protected by the global
DRM mutex so we're fine.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

f67e946b

drm: cleanup debugfs in drm_unplug_minor() · 865fb47f

由 David Herrmann 提交于 10月 20, 2013

There is no reason to delay debugfs-cleanup to drm_put_minor(). We should
forbid any access to debugfs files once the device is dead. Chances they
oops once a card was unplugged are very high, anyway.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

865fb47f

drm: make drm_get_minor() static · a99ee459

由 David Herrmann 提交于 10月 20, 2013

drm_get_minor() is only used in one file. Make it static and add a
kernel-doc comment which documents the current semantics.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

a99ee459

drm: simplify drm_put_minor() · 4ac387f5

由 David Herrmann 提交于 10月 20, 2013

Allow passing NULL as minor to simplify DRM destruction paths. Also remove
the double-pointer reset as it is no longer needed. drm_put_minor() is
only called when the underlying object is destroyed. Hence, resetting
minors to NULL is not necessary.

As drm_put_minor() is no longer used by other DRM files, we can make it
static, too.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

4ac387f5

drm: call drm_unplug_minor() from drm_put_minor() · f73aca50

由 David Herrmann 提交于 10月 20, 2013

This protects drm_unplug_minor() against repeated calls so we can use it
in drm_put_minor(). This allows us to further simplify it in follow-ups as
we no longer do minor-destruction in both functions but only in
drm_unplug_minor().
Also add kernel-doc comments about what these calls do.

[airlied: fixup for changes to kdev stuff]
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

f73aca50

drm: eliminate bit-copy restoration of crtc · 02ee4e94