Table descriptors were being installed without properly formatting the
address using paddr_to_iopte, which does not match up with the
iopte_deref in __arm_lpae_map. This is incorrect for the LPAE pte
format, as it does not handle the high bits properly.
This was found on Apple T6000 DARTs, which
On Fri, Nov 19, 2021 at 04:06:12PM +0100, Jörg Rödel wrote:
> This change came to be because the iommu_attach/detach_device()
> interface doesn't fit well into a world with iommu-groups. Devices
> within a group are by definition not isolated between each other, so
> they must all be in the same
On 19 Nov 2021, at 7:33, Vlastimil Babka wrote:
> On 11/15/21 20:37, Zi Yan wrote:
>> From: Zi Yan
>>
>> Hi David,
>>
>> You suggested to make alloc_contig_range() deal with pageblock_order instead
>> of
>> MAX_ORDER - 1 and get rid of MAX_ORDER - 1 dependency in virtio_mem[1]. This
>> patchset
On Fri, Nov 19, 2021 at 07:14:10PM +0800, Lu Baolu wrote:
> The singleton group requirement for iommu_attach/detach_device() was
> added by below commit:
>
> commit 426a273834eae65abcfc7132a21a85b3151e0bce
> Author: Joerg Roedel
> Date: Thu May 28 18:41:30 2015 +0200
>
> iommu: Limit
On 11/17/2021 10:00 PM, Tianyu Lan wrote:
On 11/17/2021 6:01 PM, Christoph Hellwig wrote:
This doesn't really have much to do with normal DMA mapping,
so why does this direct through the dma ops?
According to the previous discussion, dma_alloc_noncontigous()
and dma_vmap_noncontiguous() may
On Fri, Nov 19, 2021 at 05:44:35AM +, Tian, Kevin wrote:
> Well, the difference is just in literal. I don't know the background
> why the existing iommu_attach_device() users want to do it this
> way. But given the condition in iommu_attach_device() it could
> in theory imply some unknown
On 11/15/21 20:37, Zi Yan wrote:
> From: Zi Yan
>
> Hi David,
>
> You suggested to make alloc_contig_range() deal with pageblock_order instead
> of
> MAX_ORDER - 1 and get rid of MAX_ORDER - 1 dependency in virtio_mem[1]. This
> patchset is my attempt to achieve that. Please take a look and
On 2021/11/19 13:44, Tian, Kevin wrote:
From: Jason Gunthorpe
Sent: Thursday, November 18, 2021 9:33 PM
In concept a singleton group is different from a
multi-devices group which has only one device bound to driver...
Really? Why? I don't see it that way..
A singleton group is just a
