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Thread: Radeon PRIME Import/Export Support For Libdrm

  1. #1
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    Default Radeon PRIME Import/Export Support For Libdrm

    Phoronix: Radeon PRIME Import/Export Support For Libdrm

    Support within the DRM user-space library for handling PRIME import and export of GEM buffer objects has been committed for the open-source Radeon Linux graphics driver...

    http://www.phoronix.com/vr.php?view=MTE1OTY

  2. #2
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    All this work is very exciting! What should be done to enable GPU-switching (with MUXless cards)? When it will be possible?

  3. #3
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    I will be buying a notebook with enduro soon so I am a bit interested in that work but there is surprisingly little information "out there".

    As I understand it the whole GPU offloading and output slave will come with randr 1.5 but my xrandr --version says with xorg-git master:
    Code:
    xrandr program version       1.3.5
    Server reports RandR version 1.3
    So it's not even in Xorg yet?

    According to phoronix the prime/dmabuf stuff should be in linux 3.5. But is it ready? Is it ready in 3.6-rc1?

    Is there xf86-video-ati needed at all?

    And how long will it take until it is ready at least in git? I don't need to know it exactly, but days, weeks or months?

  4. #4
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    Default GPU recovery

    Does PRIME support GPU crash/lock-up recovery?
    What if a device driver crash?

    Then the whole system crashes?

  5. #5
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    What driver combo's will be possible with the PRIME technology?

    Intel(FOSS) + (NON-FOSS) ATi/NVidia
    Intel(FOSS) + (FOSS) ATi/NVidia

    I know there is no NON-FOSS optimus support, but is there any NON-FOSS ATi support for dual-card laptops, is it decent?

  6. #6
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    I think the Linux Catalyst driver (aka fglrx) allows manual switching between GPUs, but requires that X be restarted for the switch to take effect.

  7. #7
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    Quote Originally Posted by bridgman View Post
    I think the Linux Catalyst driver (aka fglrx) allows manual switching between GPUs, but requires that X be restarted for the switch to take effect.
    And that makes this feature useless

  8. #8
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    Um... no, but I know you already knew that

  9. #9
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    Quote Originally Posted by bridgman View Post
    Um... no, but I know you already knew that
    My point is that something like that should not involve user interaction or even an automated restart. The user must have no idea -not even the slightest blink must disrupt his work- when the system goes from one card to another. OK maybe a notification but thats all.

  10. #10
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    Ahh, you mean "makes Catalyst's switching useless". I thought you were talking about making radeon Prime useless.

    At least I understand what you're saying now, even if I still don't agree with it

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