Fix a bug in the usage of IRQs and cleanup references to the DRM IRQ midlayer.
Preferably this patchset would be merged through drm-misc-next.
v5: * go back to _hardirq() after CI tests reported atomic context in PCI probe; add rsp comment v4: * switch IRQ code to intel_synchronize_irq() (Daniel) v3: * also use intel_synchronize_hardirq() from other callsite v2: * split patch * also fix comment * add intel_synchronize_hardirq() (Ville) * update Fixes tag (Daniel)
Thomas Zimmermann (2): drm/i915: Use the correct IRQ during resume drm/i915: Drop all references to DRM IRQ midlayer
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +- drivers/gpu/drm/i915/gt/intel_ring_submission.c | 7 +++++-- drivers/gpu/drm/i915/i915_drv.c | 1 - drivers/gpu/drm/i915/i915_irq.c | 10 +++++----- drivers/gpu/drm/i915/i915_irq.h | 1 + 5 files changed, 12 insertions(+), 9 deletions(-)
base-commit: 67f5a18128770817e4218a9e496d2bf5047c51e8 prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: 0cca17365e65370fa95d193ed2f1c88917ee1aef prerequisite-patch-id: 12b9894350a0b56579d29542943465ef5134751c prerequisite-patch-id: 3e1c37d3425f4820fe36ea3da57c65e166fe0ee5 prerequisite-patch-id: 1017c860a0bf95ce370d82b8db1745f5548fb321 prerequisite-patch-id: dcc022baab7c172978de9809702c2f4f54323047 prerequisite-patch-id: 0d05ee247042b43d5ab8f3af216e708a8e09bee8 prerequisite-patch-id: 110c411161bed6072c32185940fcd052d0bdb09a prerequisite-patch-id: d2d1aeccffdfadf2b951487b8605f59c795d84cf prerequisite-patch-id: 85fe31e27ca13adc0d1bcc7c19b1ce238a77ee6a prerequisite-patch-id: c61fdacbe035ba5c17f1ff393bc9087f16aaea7b prerequisite-patch-id: c4821af5dbba4d121769f1da85d91fbb53020ec0 prerequisite-patch-id: 0b20ef3302abfe6dc123dbc54b9dd087865f935b prerequisite-patch-id: d34eb96cbbdeb91870ace4250ea75920b1653dc2 prerequisite-patch-id: 7f64fce347d15232134d7636ca7a8d9f5bf1a3a0 prerequisite-patch-id: c83be7a285eb6682cdae0df401ab5d4c208f036b prerequisite-patch-id: eb1a44d2eb2685cea154dd3f17f5f463dfafd39a prerequisite-patch-id: 92a8c37dae4b8394fd6702f4af58ac7815ac3069 prerequisite-patch-id: f0237988fe4ae6eba143432d1ace8beb52d935f8 prerequisite-patch-id: bcf4d29437ed7cb78225dec4c99249eb40c18302 prerequisite-patch-id: 6407b4c7f1b80af8d329d5f796b30da11959e936 prerequisite-patch-id: 4a69e6e49d691b555f0e0874d638cd204dcb0c48 prerequisite-patch-id: be09cfa8a67dd435a25103b85bd4b1649c5190a3 prerequisite-patch-id: 813ecc9f94251c3d669155faf64c0c9e6a458393 prerequisite-patch-id: beb2b5000a1682cbd74a7e2ab1566fcae5bccbf0 prerequisite-patch-id: 754c8878611864475a0b75fd49ff38e71a21c795 prerequisite-patch-id: d7d4bac3c19f94ba9593143b3c147d83d82cb71f prerequisite-patch-id: 983d1efbe060743f5951e474961fa431d886d757 prerequisite-patch-id: 3c78b20c3b9315cd39e0ae9ea1510c6121bf9ca9 -- 2.32.0
The code in xcs_resume() probably didn't work as intended. It uses struct drm_device.irq, which is allocated to 0, but never initialized by i915 to the device's interrupt number.
Change all calls to synchronize_hardirq() to intel_synchronize_irq(), which uses the correct interrupt. _hardirq() functions are not needed in this context.
v5: * go back to _hardirq() after PCI probe reported wrong context; add rsp comment v4: * switch everything to intel_synchronize_irq() (Daniel) v3: * also use intel_synchronize_hardirq() at another callsite v2: * wrap irq code in intel_synchronize_hardirq() (Ville)
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Fixes: 536f77b1caa0 ("drm/i915/gt: Call stop_ring() from ring resume, again") Cc: Chris Wilson chris@chris-wilson.co.uk Cc: Mika Kuoppala mika.kuoppala@linux.intel.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: Rodrigo Vivi rodrigo.vivi@intel.com Cc: Joonas Lahtinen joonas.lahtinen@linux.intel.com Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Lucas De Marchi lucas.demarchi@intel.com --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +- drivers/gpu/drm/i915/gt/intel_ring_submission.c | 7 +++++-- drivers/gpu/drm/i915/i915_irq.c | 5 +++++ drivers/gpu/drm/i915/i915_irq.h | 1 + 4 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 88694822716a..5ca3d1664335 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -1229,7 +1229,7 @@ bool intel_engine_is_idle(struct intel_engine_cs *engine) return true;
/* Waiting to drain ELSP? */ - synchronize_hardirq(to_pci_dev(engine->i915->drm.dev)->irq); + intel_synchronize_hardirq(engine->i915); intel_engine_flush_submission(engine);
/* ELSP is empty, but there are ready requests? E.g. after reset */ diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c index 5d42a12ef3d6..5c4d204d07cc 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c @@ -184,8 +184,11 @@ static int xcs_resume(struct intel_engine_cs *engine) ENGINE_TRACE(engine, "ring:{HEAD:%04x, TAIL:%04x}\n", ring->head, ring->tail);
- /* Double check the ring is empty & disabled before we resume */ - synchronize_hardirq(engine->i915->drm.irq); + /* + * Double check the ring is empty & disabled before we resume. Called + * from atomic context during PCI probe, so _hardirq(). + */ + intel_synchronize_hardirq(engine->i915); if (!stop_ring(engine)) goto err;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 7d0ce8b9f8ed..2203dca19895 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -4575,3 +4575,8 @@ void intel_synchronize_irq(struct drm_i915_private *i915) { synchronize_irq(to_pci_dev(i915->drm.dev)->irq); } + +void intel_synchronize_hardirq(struct drm_i915_private *i915) +{ + synchronize_hardirq(to_pci_dev(i915->drm.dev)->irq); +} diff --git a/drivers/gpu/drm/i915/i915_irq.h b/drivers/gpu/drm/i915/i915_irq.h index db34d5dbe402..e43b6734f21b 100644 --- a/drivers/gpu/drm/i915/i915_irq.h +++ b/drivers/gpu/drm/i915/i915_irq.h @@ -94,6 +94,7 @@ void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv); void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv); bool intel_irqs_enabled(struct drm_i915_private *dev_priv); void intel_synchronize_irq(struct drm_i915_private *i915); +void intel_synchronize_hardirq(struct drm_i915_private *i915);
int intel_get_crtc_scanline(struct intel_crtc *crtc); void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
Remove all references to DRM's IRQ midlayer. i915 uses Linux' interrupt functions directly.
v2: * also remove an outdated comment * move IRQ fix into separate patch * update Fixes tag (Daniel)
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Fixes: b318b82455bd ("drm/i915: Nuke drm_driver irq vfuncs") Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: Chris Wilson chris@chris-wilson.co.uk Cc: Jani Nikula jani.nikula@linux.intel.com Cc: Joonas Lahtinen joonas.lahtinen@linux.intel.com Cc: Rodrigo Vivi rodrigo.vivi@intel.com Cc: intel-gfx@lists.freedesktop.org --- drivers/gpu/drm/i915/i915_drv.c | 1 - drivers/gpu/drm/i915/i915_irq.c | 5 ----- 2 files changed, 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 62327c15f457..30d8cd8c69b1 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -42,7 +42,6 @@ #include <drm/drm_aperture.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_ioctl.h> -#include <drm/drm_irq.h> #include <drm/drm_managed.h> #include <drm/drm_probe_helper.h>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 2203dca19895..1d4c683c9de9 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -33,7 +33,6 @@ #include <linux/sysrq.h>
#include <drm/drm_drv.h> -#include <drm/drm_irq.h>
#include "display/intel_de.h" #include "display/intel_display_types.h" @@ -4564,10 +4563,6 @@ void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv)
bool intel_irqs_enabled(struct drm_i915_private *dev_priv) { - /* - * We only use drm_irq_uninstall() at unload and VT switch, so - * this is the only thing we need to check. - */ return dev_priv->runtime_pm.irqs_enabled; }
On Thu, Jul 01, 2021 at 07:36:16PM +0200, Thomas Zimmermann wrote:
Fix a bug in the usage of IRQs and cleanup references to the DRM IRQ midlayer.
Preferably this patchset would be merged through drm-misc-next.
v5:
- go back to _hardirq() after CI tests reported atomic context in PCI probe; add rsp comment
v4:
- switch IRQ code to intel_synchronize_irq() (Daniel)
v3:
- also use intel_synchronize_hardirq() from other callsite
v2:
- split patch
- also fix comment
- add intel_synchronize_hardirq() (Ville)
- update Fixes tag (Daniel)
Ok now I actually pushed the right patch set. -Daniel
Thomas Zimmermann (2): drm/i915: Use the correct IRQ during resume drm/i915: Drop all references to DRM IRQ midlayer
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +- drivers/gpu/drm/i915/gt/intel_ring_submission.c | 7 +++++-- drivers/gpu/drm/i915/i915_drv.c | 1 - drivers/gpu/drm/i915/i915_irq.c | 10 +++++----- drivers/gpu/drm/i915/i915_irq.h | 1 + 5 files changed, 12 insertions(+), 9 deletions(-)
base-commit: 67f5a18128770817e4218a9e496d2bf5047c51e8 prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: 0cca17365e65370fa95d193ed2f1c88917ee1aef prerequisite-patch-id: 12b9894350a0b56579d29542943465ef5134751c prerequisite-patch-id: 3e1c37d3425f4820fe36ea3da57c65e166fe0ee5 prerequisite-patch-id: 1017c860a0bf95ce370d82b8db1745f5548fb321 prerequisite-patch-id: dcc022baab7c172978de9809702c2f4f54323047 prerequisite-patch-id: 0d05ee247042b43d5ab8f3af216e708a8e09bee8 prerequisite-patch-id: 110c411161bed6072c32185940fcd052d0bdb09a prerequisite-patch-id: d2d1aeccffdfadf2b951487b8605f59c795d84cf prerequisite-patch-id: 85fe31e27ca13adc0d1bcc7c19b1ce238a77ee6a prerequisite-patch-id: c61fdacbe035ba5c17f1ff393bc9087f16aaea7b prerequisite-patch-id: c4821af5dbba4d121769f1da85d91fbb53020ec0 prerequisite-patch-id: 0b20ef3302abfe6dc123dbc54b9dd087865f935b prerequisite-patch-id: d34eb96cbbdeb91870ace4250ea75920b1653dc2 prerequisite-patch-id: 7f64fce347d15232134d7636ca7a8d9f5bf1a3a0 prerequisite-patch-id: c83be7a285eb6682cdae0df401ab5d4c208f036b prerequisite-patch-id: eb1a44d2eb2685cea154dd3f17f5f463dfafd39a prerequisite-patch-id: 92a8c37dae4b8394fd6702f4af58ac7815ac3069 prerequisite-patch-id: f0237988fe4ae6eba143432d1ace8beb52d935f8 prerequisite-patch-id: bcf4d29437ed7cb78225dec4c99249eb40c18302 prerequisite-patch-id: 6407b4c7f1b80af8d329d5f796b30da11959e936 prerequisite-patch-id: 4a69e6e49d691b555f0e0874d638cd204dcb0c48 prerequisite-patch-id: be09cfa8a67dd435a25103b85bd4b1649c5190a3 prerequisite-patch-id: 813ecc9f94251c3d669155faf64c0c9e6a458393 prerequisite-patch-id: beb2b5000a1682cbd74a7e2ab1566fcae5bccbf0 prerequisite-patch-id: 754c8878611864475a0b75fd49ff38e71a21c795 prerequisite-patch-id: d7d4bac3c19f94ba9593143b3c147d83d82cb71f prerequisite-patch-id: 983d1efbe060743f5951e474961fa431d886d757 prerequisite-patch-id: 3c78b20c3b9315cd39e0ae9ea1510c6121bf9ca9 -- 2.32.0
Hi
Am 02.07.21 um 21:51 schrieb Daniel Vetter:
On Thu, Jul 01, 2021 at 07:36:16PM +0200, Thomas Zimmermann wrote:
Fix a bug in the usage of IRQs and cleanup references to the DRM IRQ midlayer.
Preferably this patchset would be merged through drm-misc-next.
v5:
- go back to _hardirq() after CI tests reported atomic context in PCI probe; add rsp comment
v4:
- switch IRQ code to intel_synchronize_irq() (Daniel)
v3:
- also use intel_synchronize_hardirq() from other callsite
v2:
- split patch
- also fix comment
- add intel_synchronize_hardirq() (Ville)
- update Fixes tag (Daniel)
Ok now I actually pushed the right patch set.
Oh, I messed up. I forgot to reset the commit message in patch 1 v5. It's for v4 and contains the opposite of what's actually happening.
Is it too late to fix this? If you can force-push into the branch, maybe simply replace the current message with the one for v3. [1]
Best regards Thomas
[1] https://patchwork.freedesktop.org/patch/441954/?series=92054&rev=2
-Daniel
Thomas Zimmermann (2): drm/i915: Use the correct IRQ during resume drm/i915: Drop all references to DRM IRQ midlayer
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +- drivers/gpu/drm/i915/gt/intel_ring_submission.c | 7 +++++-- drivers/gpu/drm/i915/i915_drv.c | 1 - drivers/gpu/drm/i915/i915_irq.c | 10 +++++----- drivers/gpu/drm/i915/i915_irq.h | 1 + 5 files changed, 12 insertions(+), 9 deletions(-)
base-commit: 67f5a18128770817e4218a9e496d2bf5047c51e8 prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: 0cca17365e65370fa95d193ed2f1c88917ee1aef prerequisite-patch-id: 12b9894350a0b56579d29542943465ef5134751c prerequisite-patch-id: 3e1c37d3425f4820fe36ea3da57c65e166fe0ee5 prerequisite-patch-id: 1017c860a0bf95ce370d82b8db1745f5548fb321 prerequisite-patch-id: dcc022baab7c172978de9809702c2f4f54323047 prerequisite-patch-id: 0d05ee247042b43d5ab8f3af216e708a8e09bee8 prerequisite-patch-id: 110c411161bed6072c32185940fcd052d0bdb09a prerequisite-patch-id: d2d1aeccffdfadf2b951487b8605f59c795d84cf prerequisite-patch-id: 85fe31e27ca13adc0d1bcc7c19b1ce238a77ee6a prerequisite-patch-id: c61fdacbe035ba5c17f1ff393bc9087f16aaea7b prerequisite-patch-id: c4821af5dbba4d121769f1da85d91fbb53020ec0 prerequisite-patch-id: 0b20ef3302abfe6dc123dbc54b9dd087865f935b prerequisite-patch-id: d34eb96cbbdeb91870ace4250ea75920b1653dc2 prerequisite-patch-id: 7f64fce347d15232134d7636ca7a8d9f5bf1a3a0 prerequisite-patch-id: c83be7a285eb6682cdae0df401ab5d4c208f036b prerequisite-patch-id: eb1a44d2eb2685cea154dd3f17f5f463dfafd39a prerequisite-patch-id: 92a8c37dae4b8394fd6702f4af58ac7815ac3069 prerequisite-patch-id: f0237988fe4ae6eba143432d1ace8beb52d935f8 prerequisite-patch-id: bcf4d29437ed7cb78225dec4c99249eb40c18302 prerequisite-patch-id: 6407b4c7f1b80af8d329d5f796b30da11959e936 prerequisite-patch-id: 4a69e6e49d691b555f0e0874d638cd204dcb0c48 prerequisite-patch-id: be09cfa8a67dd435a25103b85bd4b1649c5190a3 prerequisite-patch-id: 813ecc9f94251c3d669155faf64c0c9e6a458393 prerequisite-patch-id: beb2b5000a1682cbd74a7e2ab1566fcae5bccbf0 prerequisite-patch-id: 754c8878611864475a0b75fd49ff38e71a21c795 prerequisite-patch-id: d7d4bac3c19f94ba9593143b3c147d83d82cb71f prerequisite-patch-id: 983d1efbe060743f5951e474961fa431d886d757 prerequisite-patch-id: 3c78b20c3b9315cd39e0ae9ea1510c6121bf9ca9 -- 2.32.0
On Sat, Jul 03, 2021 at 07:55:31PM +0200, Thomas Zimmermann wrote:
Hi
Am 02.07.21 um 21:51 schrieb Daniel Vetter:
On Thu, Jul 01, 2021 at 07:36:16PM +0200, Thomas Zimmermann wrote:
Fix a bug in the usage of IRQs and cleanup references to the DRM IRQ midlayer.
Preferably this patchset would be merged through drm-misc-next.
v5:
- go back to _hardirq() after CI tests reported atomic context in PCI probe; add rsp comment
v4:
- switch IRQ code to intel_synchronize_irq() (Daniel)
v3:
- also use intel_synchronize_hardirq() from other callsite
v2:
- split patch
- also fix comment
- add intel_synchronize_hardirq() (Ville)
- update Fixes tag (Daniel)
Ok now I actually pushed the right patch set.
Oh, I messed up. I forgot to reset the commit message in patch 1 v5. It's for v4 and contains the opposite of what's actually happening.
Is it too late to fix this? If you can force-push into the branch, maybe simply replace the current message with the one for v3. [1]
I already had to do a Fri-late-evening force push to fix my original mistake right after I pushed it. Now there's other stuff there, so too late unfortunately :-/
Anyway, not the worst screw-up and the Link: tag at least will point to this discussion here. -Daniel
Best regards Thomas
[1] https://patchwork.freedesktop.org/patch/441954/?series=92054&rev=2
-Daniel
Thomas Zimmermann (2): drm/i915: Use the correct IRQ during resume drm/i915: Drop all references to DRM IRQ midlayer
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +- drivers/gpu/drm/i915/gt/intel_ring_submission.c | 7 +++++-- drivers/gpu/drm/i915/i915_drv.c | 1 - drivers/gpu/drm/i915/i915_irq.c | 10 +++++----- drivers/gpu/drm/i915/i915_irq.h | 1 + 5 files changed, 12 insertions(+), 9 deletions(-)
base-commit: 67f5a18128770817e4218a9e496d2bf5047c51e8 prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: 0cca17365e65370fa95d193ed2f1c88917ee1aef prerequisite-patch-id: 12b9894350a0b56579d29542943465ef5134751c prerequisite-patch-id: 3e1c37d3425f4820fe36ea3da57c65e166fe0ee5 prerequisite-patch-id: 1017c860a0bf95ce370d82b8db1745f5548fb321 prerequisite-patch-id: dcc022baab7c172978de9809702c2f4f54323047 prerequisite-patch-id: 0d05ee247042b43d5ab8f3af216e708a8e09bee8 prerequisite-patch-id: 110c411161bed6072c32185940fcd052d0bdb09a prerequisite-patch-id: d2d1aeccffdfadf2b951487b8605f59c795d84cf prerequisite-patch-id: 85fe31e27ca13adc0d1bcc7c19b1ce238a77ee6a prerequisite-patch-id: c61fdacbe035ba5c17f1ff393bc9087f16aaea7b prerequisite-patch-id: c4821af5dbba4d121769f1da85d91fbb53020ec0 prerequisite-patch-id: 0b20ef3302abfe6dc123dbc54b9dd087865f935b prerequisite-patch-id: d34eb96cbbdeb91870ace4250ea75920b1653dc2 prerequisite-patch-id: 7f64fce347d15232134d7636ca7a8d9f5bf1a3a0 prerequisite-patch-id: c83be7a285eb6682cdae0df401ab5d4c208f036b prerequisite-patch-id: eb1a44d2eb2685cea154dd3f17f5f463dfafd39a prerequisite-patch-id: 92a8c37dae4b8394fd6702f4af58ac7815ac3069 prerequisite-patch-id: f0237988fe4ae6eba143432d1ace8beb52d935f8 prerequisite-patch-id: bcf4d29437ed7cb78225dec4c99249eb40c18302 prerequisite-patch-id: 6407b4c7f1b80af8d329d5f796b30da11959e936 prerequisite-patch-id: 4a69e6e49d691b555f0e0874d638cd204dcb0c48 prerequisite-patch-id: be09cfa8a67dd435a25103b85bd4b1649c5190a3 prerequisite-patch-id: 813ecc9f94251c3d669155faf64c0c9e6a458393 prerequisite-patch-id: beb2b5000a1682cbd74a7e2ab1566fcae5bccbf0 prerequisite-patch-id: 754c8878611864475a0b75fd49ff38e71a21c795 prerequisite-patch-id: d7d4bac3c19f94ba9593143b3c147d83d82cb71f prerequisite-patch-id: 983d1efbe060743f5951e474961fa431d886d757 prerequisite-patch-id: 3c78b20c3b9315cd39e0ae9ea1510c6121bf9ca9 -- 2.32.0
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
dri-devel@lists.freedesktop.org
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Daniel Vetter -
Thomas Zimmermann