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Date:   Thu, 17 Dec 2020 17:21:02 +0100
From:   Mike Galbraith <>
To:     LKML <>
Cc:     Dave Airlie <>,
        virtualization <>,
        Christian König <>
Subject: [bisected] Re: drm, qxl: post 5.11 merge warning+explosion

ee5d2a8e549e90325fcc31825269f89647cd6fac is the first bad commit
commit ee5d2a8e549e90325fcc31825269f89647cd6fac
Author: Christian König <>
Date:   Sat Oct 24 13:10:28 2020 +0200

    drm/ttm: wire up the new pool as default one v2

    Provide the necessary parameters by all drivers and use the new pool alloc
    when no driver specific function is provided.

    v2: fix the GEM VRAM helpers

    Signed-off-by: Christian König <>
    Reviewed-by: Dave Airlie <>
    Reviewed-by: Madhav Chauhan <>
    Tested-by: Huang Rui <>

 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c |  4 ++--
 drivers/gpu/drm/drm_gem_vram_helper.c   |  4 ++--
 drivers/gpu/drm/nouveau/nouveau_ttm.c   | 14 +++++++++-----
 drivers/gpu/drm/qxl/qxl_ttm.c           |  5 ++---
 drivers/gpu/drm/radeon/radeon_ttm.c     |  4 ++--
 drivers/gpu/drm/ttm/ttm_bo.c            |  8 ++++++--
 drivers/gpu/drm/ttm/ttm_memory.c        |  2 +-
 drivers/gpu/drm/ttm/ttm_tt.c            |  5 ++---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c     |  5 +++--
 include/drm/ttm/ttm_bo_driver.h         | 11 +++++++----
 10 files changed, 36 insertions(+), 26 deletions(-)

git bisect start 'drivers/gpu/drm/qxl'
# good: [2c85ebc57b3e1817b6ce1a6b703928e113a90442] Linux 5.10
git bisect good 2c85ebc57b3e1817b6ce1a6b703928e113a90442
# bad: [accefff5b547a9a1d959c7e76ad539bf2480e78b] Merge tag 'arm-soc-omap-genpd-5.11' of git://
git bisect bad accefff5b547a9a1d959c7e76ad539bf2480e78b
# bad: [d635a69dd4981cc51f90293f5f64268620ed1565] Merge tag 'net-next-5.11' of git://
git bisect bad d635a69dd4981cc51f90293f5f64268620ed1565
# bad: [0ca2ce81eb8ee30f3ba8ac7967fef9cfbb44dbdb] Merge tag 'arm64-upstream' of git://
git bisect bad 0ca2ce81eb8ee30f3ba8ac7967fef9cfbb44dbdb
# bad: [f8aab60422c371425365d386dfd51e0c6c5b1041] drm/amdgpu: Initialise drm_gem_object_funcs for imported BOs
git bisect bad f8aab60422c371425365d386dfd51e0c6c5b1041
# bad: [c0f98d2f8b076bf3e3183aa547395f919c943a14] Merge tag 'drm-misc-next-2020-11-05' of git:// into drm-next
git bisect bad c0f98d2f8b076bf3e3183aa547395f919c943a14
# good: [6a6e5988a2657cd0c91f6f1a3e7d194599248b6d] drm/ttm: replace last move_notify with delete_mem_notify
git bisect good 6a6e5988a2657cd0c91f6f1a3e7d194599248b6d
# good: [f566fdcd6cc49a9d5b5d782f56e3e7cb243f01b8] drm/i915: Force VT'd workarounds when running as a guest OS
git bisect good f566fdcd6cc49a9d5b5d782f56e3e7cb243f01b8
# good: [e76ab2cf21c38331155ea613cdf18582f011c30f] drm/i915: Remove per-platform IIR HPD masking
git bisect good e76ab2cf21c38331155ea613cdf18582f011c30f
# bad: [268af50f38b1f2199a2e85e38073d7a25c20190c] drm/panfrost: Support cache-coherent integrations
git bisect bad 268af50f38b1f2199a2e85e38073d7a25c20190c
# good: [e000650375b65ff77c5ee852b5086f58c741179e] fbdev/atafb: Remove unused extern variables
git bisect good e000650375b65ff77c5ee852b5086f58c741179e
# bad: [461619f5c3242aaee9ec3f0b7072719bd86ea207] drm/nouveau: switch to new allocator
git bisect bad 461619f5c3242aaee9ec3f0b7072719bd86ea207
# good: [d099fc8f540add80f725014fdd4f7f49f3c58911] drm/ttm: new TT backend allocation pool v3
git bisect good d099fc8f540add80f725014fdd4f7f49f3c58911
# bad: [e93b2da9799e5cb97760969f3e1f02a5bdac29fe] drm/amdgpu: switch to new allocator v2
git bisect bad e93b2da9799e5cb97760969f3e1f02a5bdac29fe
# bad: [ee5d2a8e549e90325fcc31825269f89647cd6fac] drm/ttm: wire up the new pool as default one v2
git bisect bad ee5d2a8e549e90325fcc31825269f89647cd6fac
# first bad commit: [ee5d2a8e549e90325fcc31825269f89647cd6fac] drm/ttm: wire up the new pool as default one v2

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