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Date:	Fri, 08 Jun 2012 03:56:49 +0200
From:	Andreas Hartmann <andihartmann@...19freenet.de>
To:	Alex Williamson <alex.williamson@...hat.com>
CC:	Andreas Hartmann <andihartmann@...19freenet.de>,
	bhelgaas@...gle.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	jan.kiszka@...mens.com
Subject: Re: [PATCH] PCI: Add Ralink RT2800 broken INTx masking quirk

Alex Williamson wrote:
> On Thu, 2012-06-07 at 23:42 +0200, Andreas Hartmann wrote:
>> Alex Williamson wrote:
>>> On Thu, 2012-06-07 at 23:01 +0200, Andreas Hartmann wrote:
[...]
>>>> May I have please another question? 
>>>> Unfortunately I can't cleanly unmount filesystems during shutdown with your 
>>>> kernel (this problem doesn't happen with the patched 3.4 suse kernel).
>>>
>>> Hmm, are you using my kernel that's based on the next branch?  Could be
>>> any number of things broken in next.
>>>
>>>> I applied your vfio-patches from your git-repository to an openSUSE 3.4 
>>>> kernel (plus one other to get the patches applied):
>>>>
>>>> iommu_core:_pass_a_user-provided_token_to_fault_handlers.patch
>>>> 0ca4120cbaeaa2aecdccc5043b309fe1808aae2a.patch [PATCH] pci: Add PCI DMA source ID quirk
>>>> db47c1f7313ad863818261f62f1babaf0b564e55.patch [PATCH] pci: Add ACS validation utility
>>>> a89edb6943102d4519860bca5671740c1b7364cc.patch [PATCH] pci: export pci_user functions for use by other drivers
>>>> 38fdda7327b6cf50c1265a6332e94b97100aa10e.patch [PATCH] pci: Create common pcibios_err_to_errno
>>>> cb6e045625e5a217df3cebcb4585b40cbcad6c96.patch [PATCH] pci: Misc pci_reg additions
>>>> c6985f9b501903f5c707a1711fa53dc94c72f999.patch [PATCH] driver core: Add iommu_group tracking to struct device
>>>> 581187e853620c52e4b78db643161cc3be2f3388.patch [PATCH] iommu: IOMMU Groups
>>>> 635e48574089f4c8205a2fd7b1d85edd02344fe5.patch [PATCH] amd_iommu: Support IOMMU groups
>>>> 37f2d6d5217fdd2facd9641b83fde683263adcaf.patch [PATCH] intel-iommu: Support IOMMU groups
>>>> 351d849a51787140736e04f261ae9db09c980868.patch [PATCH] amd_iommu: Make use of DMA quirks and ACS checks in IOMMU
>>>> 92eef0a72193ef8504eea10b4ccbdb2e1ee9f4b3.patch [PATCH] intel-iommu: Make use of DMA quirks and ACS checks in IOMMU groups
>>>> dd2886fe0a8936d649a365162658406e7a18d274.patch [PATCH] iommu: Remove group_mf
>>>> 6891b9a7d56841e592cfb444a7f4b2b02831f866.patch [PATCH] vfio: VFIO core
>>>> 51b06ff680d8bc30d1bd627e2dd24641789be55d.patch [PATCH] vfio: Add documentation
>>>> 4b36b306122a225d33e947e7f9e6d1117a4fb699.patch [PATCH] vfio: Type1 IOMMU implementation
>>>> 91e4950e482b142dd9ab46f0ec386c5eed9f1470.patch [PATCH] vfio: Add PCI device driver
>>>> PCI:_Mark_INTx_masking_support_of_Chelsio_T310_10GbE_NIC_as_broken.patch 
>>>> PCI:_Add_Ralink_RT2800_broken_INTx_masking_quirk.patch 
>>>> IRQF_ONESHOT.patch"
>>>>
>>>>
>>>> The VM does work as expected, but fglrx isn't happy any
>>>> more (but worked fine with your kernel and works fine, too, with the
>>>> unpatched suse 3.4 kernel). fglrx says:
>>>
>>> So you're saying:
>>>
>>> kernel built from my tree: fglrx works
>>> opensuse kernel: fglrx works
>>> opensuse kernel + above patches: failure below?

Until now, I wasn't able to get the opensuse 4.1 kernel running.

>>
>> Exactly.
>>
>>>
>>>> Jun  7 14:21:42 host kernel: [  105.103610] [fglrx:firegl_cail_init] *ERROR* CAIL: CAILInitialize failed, error 1
>>>> Jun  7 14:21:42 host kernel: [  105.103613] [fglrx:hal_init_asic] *ERROR* Failed to initialize ASIC.
>>>> Jun  7 14:21:42 host kernel: [  105.103645] [fglrx:firegl_init_pcie] *ERROR* Can not get FB size
>>>> Jun  7 14:21:42 host kernel: [  105.103653] [fglrx:IRQMGR_alloc_context] *ERROR* IRQMGR_GetExtensionSize returned 0
>>>> Jun  7 14:21:42 host kernel: [  105.103654] [fglrx:irqmgr_wrap_initialize] *ERROR* Fail to allocate IRQMGR context! 
>>>> Jun  7 14:21:42 host kernel: [  105.109151] [fglrx:firegl_irq_enable] *ERROR* interrupt source ff000032 is not supported on this hardware (return code = 2)
>>>> Jun  7 14:21:42 host kernel: [  105.109173] [fglrx:firegl_irq_enable] *ERROR* interrupt source 10000000 is not supported on this hardware (return code = 2)
>>>> Jun  7 14:21:42 host kernel: [  105.169073] [fglrx:firegl_irq_enable] *ERROR* interrupt source 60000001 is not supported on this hardware (return code = 2)
>>>> Jun  7 14:21:42 host kernel: [  105.169107] [fglrx:firegl_irq_enable] *ERROR* interrupt source ff00002c is not supported on this hardware (return code = 2)
>>>> Jun  7 14:21:42 host kernel: [  105.169125] [fglrx:firegl_irq_enable] *ERROR* interrupt source ff00004e is not supported on this hardware (return code = 2)
>>>> Jun  7 14:21:42 host kernel: [  105.169142] [fglrx:firegl_irq_enable] *ERROR* interrupt source 20000400 is not supported on this hardware (return code = 2)
>>>> Jun  7 14:21:42 host kernel: [  105.172906] [fglrx:firegl_cmmqs_init] *ERROR* CMMQS init:GAL is not initialized.
>>>> Jun  7 14:21:42 host kernel: [  105.172909] [fglrx:firegl_cmmqs_createdriver] *ERROR* CMMQS Initialization failed: firegl_cmmqs_createdriver
>>>> Jun  7 14:21:42 host kernel: [  105.172940] [fglrx:firegl_cmmqs_BIOSControl] *ERROR* CMMQS BIOS Control: CMMQS handle is not valid.
>>>> Jun  7 14:21:42 host kernel: [  105.172942] [fglrx:firegl_bios_control] *ERROR* CMMQS BIOS Control is failed: firegl_bios_control
>>>> Jun  7 14:21:42 host kernel: [  105.195648] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0017 address=0x0000000f00268a00 flags=0x0010]
>>>> Jun  7 14:21:42 host kernel: [  105.195651] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0017 address=0x0000000f0026a300 flags=0x0010]
>>>> ...
>>>>
>>>> Do you have by chance an idea which other patch is missing to get
>>>> it working again?
>>>
>>> Does this happen regardless of whether you've done anything with a VM or
>>> even loaded the vfio modules?
>>
>> vfio modules aren't loaded at all at this moment. They cannot be the
>> problem ... . But there are some changes in iommu, too, aren't there?
> 
> Yes, we're creating the iommu groups.
> 
>>>  If so, please bisect the patch set and
>>> report where it starts to fail.  None of these patches should have any
>>> effect on existing DMA paths or drivers.  Testing stock v3.4 vs 3.4 +
>>> patches would also be an interesting exercise. 
>>
>> Yes, this is the next thing I have to do.
> 
> I just pushed a vfio-3.4 branch to my tree at
> git://github.com/awilliam/linux-vfio.git.  Please let me know what you
> find with this.

Works fine :-) vfio and fglrx and PCIe passthrough.


Thanks,
Andreas
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