Re: Nouveau crashes in 4.6-rc on arm64

On 20/04/16 11:44, Robin Murphy wrote: Hi Alex, On 20/04/16 05:35, Alexandre Courbot wrote: [...] Bisection came down to 1733a2ad3674("drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"), and sure enough reverting that removes the crash. Thanks for taking the time to bisect this. And

Re: Nouveau crashes in 4.6-rc on arm64

On 20/04/16 11:44, Robin Murphy wrote: Hi Alex, On 20/04/16 05:35, Alexandre Courbot wrote: [...] Bisection came down to 1733a2ad3674("drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"), and sure enough reverting that removes the crash. Thanks for taking the time to bisect this. And

Re: Nouveau crashes in 4.6-rc on arm64

Hi Alex, On 20/04/16 05:35, Alexandre Courbot wrote: [...] Bisection came down to 1733a2ad3674("drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"), and sure enough reverting that removes the crash. Thanks for taking the time to bisect this. And apologies as it seems my commit is the

Re: Nouveau crashes in 4.6-rc on arm64

Hi Alex, On 20/04/16 05:35, Alexandre Courbot wrote: [...] Bisection came down to 1733a2ad3674("drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"), and sure enough reverting that removes the crash. Thanks for taking the time to bisect this. And apologies as it seems my commit is the

Re: Nouveau crashes in 4.6-rc on arm64

On 04/11/2016 04:22 PM, Alexandre Courbot wrote: Hi Robin, On 04/09/2016 03:46 AM, Robin Murphy wrote: Hi Alex, On 08/04/16 05:47, Alexandre Courbot wrote: Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the

Re: Nouveau crashes in 4.6-rc on arm64

On 04/11/2016 04:22 PM, Alexandre Courbot wrote: Hi Robin, On 04/09/2016 03:46 AM, Robin Murphy wrote: Hi Alex, On 08/04/16 05:47, Alexandre Courbot wrote: Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the

Re: Nouveau crashes in 4.6-rc on arm64

On 04/11/2016 04:22 PM, Alexandre Courbot wrote: ... or maybe we could just unconditionally sync all buffers and let the DMA API abstract this away. My concern is that on coherent architectures we would still need to loop over all the pages for nothing, as I don't think the loop (see e.g.

Re: Nouveau crashes in 4.6-rc on arm64

On 04/11/2016 04:22 PM, Alexandre Courbot wrote: ... or maybe we could just unconditionally sync all buffers and let the DMA API abstract this away. My concern is that on coherent architectures we would still need to loop over all the pages for nothing, as I don't think the loop (see e.g.

Re: Nouveau crashes in 4.6-rc on arm64

Hi Robin, On 04/09/2016 03:46 AM, Robin Murphy wrote: Hi Alex, On 08/04/16 05:47, Alexandre Courbot wrote: Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL

Re: Nouveau crashes in 4.6-rc on arm64

Hi Robin, On 04/09/2016 03:46 AM, Robin Murphy wrote: Hi Alex, On 08/04/16 05:47, Alexandre Courbot wrote: Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL

Re: Nouveau crashes in 4.6-rc on arm64

Hi Alex, On 08/04/16 05:47, Alexandre Courbot wrote: Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL inside nouveau_fbcon_imageblit(). My setup is an old XFX

Re: Nouveau crashes in 4.6-rc on arm64

Hi Alex, On 08/04/16 05:47, Alexandre Courbot wrote: Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL inside nouveau_fbcon_imageblit(). My setup is an old XFX

Re: Nouveau crashes in 4.6-rc on arm64

On Fri, Apr 8, 2016 at 12:47 AM, Alexandre Courbot wrote: > Hi Robin, > > On 04/07/2016 08:50 PM, Robin Murphy wrote: >> >> Hello, >> >> With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the >> look of it by dereferencing some offset from NULL inside >>

Re: Nouveau crashes in 4.6-rc on arm64

On Fri, Apr 8, 2016 at 12:47 AM, Alexandre Courbot wrote: > Hi Robin, > > On 04/07/2016 08:50 PM, Robin Murphy wrote: >> >> Hello, >> >> With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the >> look of it by dereferencing some offset from NULL inside >>

Re: Nouveau crashes in 4.6-rc on arm64

Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL inside nouveau_fbcon_imageblit(). My setup is an old XFX 7600GT card plugged into an ARM Juno r1 board, which

Re: Nouveau crashes in 4.6-rc on arm64

Hi Robin, On 04/07/2016 08:50 PM, Robin Murphy wrote: Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL inside nouveau_fbcon_imageblit(). My setup is an old XFX 7600GT card plugged into an ARM Juno r1 board, which

Nouveau crashes in 4.6-rc on arm64

Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL inside nouveau_fbcon_imageblit(). My setup is an old XFX 7600GT card plugged into an ARM Juno r1 board, which works fine with 4.5 and earlier. Attached are a

Nouveau crashes in 4.6-rc on arm64

Hello, With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the look of it by dereferencing some offset from NULL inside nouveau_fbcon_imageblit(). My setup is an old XFX 7600GT card plugged into an ARM Juno r1 board, which works fine with 4.5 and earlier. Attached are a