Re: [PATCH 1/2] drm/i915/dmabuf: fix broken build

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On Wed, 27 Oct 2021, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
> On Wed, 27 Oct 2021, Matthew Auld <matthew.william.auld@xxxxxxxxx> wrote:
>> On Thu, 21 Oct 2021 at 13:54, Matthew Auld <matthew.auld@xxxxxxxxx> wrote:
>>>
>>> wbinvd_on_all_cpus() is only defined on x86 it seems, plus we need to
>>> include asm/smp.h here.
>>>
>>> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>>> Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
>>> Cc: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
>>
>> Jani, would it make sense to cherry-pick this to -fixes? The offending
>> commit is in drm-next, and there have been a few reports around this.
>>
>> Fixes: a035154da45d ("drm/i915/dmabuf: add paranoid flush-on-acquire")
>
> If the Fixes: tag is in place, our tooling will cherry-pick it where it
> belongs. (In this case, drm-intel-next-fixes, not drm-intel-fixes.)
>
> Cc: Rodrigo who covers drm-intel-next-fixes atm.

PS. 'dim tc a035154da45d' tells you where that commit is:

drm/drm-next
drm-intel/drm-intel-gt-next
drm-misc/drm-misc-next
drm-misc/topic/amdgpu-dp2.0-mst

So we see it's not in Linus' tree.



>
>
>> ---
>>  drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
>> index 1adcd8e02d29..a45d0ec2c5b6 100644
>> --- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
>> +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
>> @@ -12,6 +12,13 @@
>>  #include "i915_gem_object.h"
>>  #include "i915_scatterlist.h"
>>>
>>> +#if defined(CONFIG_X86)
>>> +#include <asm/smp.h>
>>> +#else
>>> +#define wbinvd_on_all_cpus() \
>>> +       pr_warn(DRIVER_NAME ": Missing cache flush in %s\n", __func__)
>>> +#endif
>>> +
>>>  I915_SELFTEST_DECLARE(static bool force_different_devices;)
>>>
>>>  static struct drm_i915_gem_object *dma_buf_to_obj(struct dma_buf *buf)
>>> --
>>> 2.26.3
>>>

-- 
Jani Nikula, Intel Open Source Graphics Center




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