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<ayaka> ndufresne, good to know that, I was planning to do the same thing
<ndufresne> ayaka: btw, I notice that from 4.8-rc6, the IOMMU builds boots, the drm-exynos driver is miss-behaving though
<ndufresne> it solves the memory allocation issue we get into all the time
<ayaka> ndufresne, yes, I have tested sysiommu, it works fine
<ndufresne> though dma-buf importation in drm-exynos crash for me, if you have any idea, I'm a bit blocked ont his subject
* ndufresne is missing some knowledge on page fault debugging
<ayaka> I didn't use drm-exynos, what it is used for? graphics?
<ndufresne> yes, it's the display driver
<ayaka> I just bought a LCD panel and try to make it work now
<ndufresne> I'm testing kmssink, so basically I'm testing true zero-copy to scannout
<ndufresne> I'm over HDMI
<ayaka> but I think I mistake some part in panel timing, so I can't even make the framebuffer have effect on it
<ayaka> I would try HDMI next time
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<ayaka> that does currently issue with exynos drm?
<ayaka> the graphics can output nothing or something else?
<ndufresne> ayaka: it works in general, though as soon as I pass a DMABuf (when SYSIOMMU is enabled), it results in page fault
<ndufresne> that prevents zero copy
<ayaka> I think the X won't use it right?
<javier__> ayaka: ndufresne is using kmssink, so is not using X
<javier__> ayaka: I asked sylwester about the v4l2-jpeg-codec-test app that he mentions in the thread you pointed out yesterday
<ayaka> javier__, I see thank you
<ayaka> then I could use it to test the driver
<javier__> ayaka: yes, the commit is a bit old though so the mainline driver may had bit rot
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<mixfix41> Do you guys install kernel-sources package? I see I avoid it probably cause it breaks the system assumingly
<LiquidAcid> liquid@leena ~ $ eix kernel-sources
<LiquidAcid> No matches found
<mixfix41> affirmative
<LiquidAcid> roger that
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