On 2022-03-03 03:43, yf.w...@mediatek.com wrote:
On Thu, 2022-03-03 at 07:52 +0800, Miles Chen wrote:
Thanks for your explanation.
YF showed me some numbers yesterday and maybe we can have a further
discussion in that test case. (It looks like that some iovas are
freed but
their pfn_lo(s) are l
From: yf.w...@mediatek.com
On Thu, 2022-03-03 at 07:52 +0800, Miles Chen wrote:
> Thanks for your explanation.
>
> YF showed me some numbers yesterday and maybe we can have a further
> discussion in that test case. (It looks like that some iovas are
> freed but
> their pfn_lo(s) are less than ca
>> If no cached iova is freed, resetting max32_alloc_size before
>> the retry allocation only give us a retry. Is it possible that
>> other users free their iovas during the additional retry?
>
> No, it's not possible, since everyone's serialised by iova_rbtree_lock.
> If the caches were already e
On 2022-03-01 23:29, Miles Chen via iommu wrote:
Hi Yunfei,
Since __alloc_and_insert_iova_range fail will set the current alloc
iova size to max32_alloc_size (iovad->max32_alloc_size = size),
when the retry is executed into the __alloc_and_insert_iova_range
function, the retry action will be bl
Hi Yunfei,
>> Since __alloc_and_insert_iova_range fail will set the current alloc
>> iova size to max32_alloc_size (iovad->max32_alloc_size = size),
>> when the retry is executed into the __alloc_and_insert_iova_range
>> function, the retry action will be blocked by the check condition
>> (size >=
On 2022-03-01 01:59, yf.wang--- via iommu wrote:
From: Yunfei Wang
In alloc_iova_fast function, if __alloc_and_insert_iova_range fail,
alloc_iova_fast will try flushing rcache and retry alloc iova, but
this has an issue:
Since __alloc_and_insert_iova_range fail will set the current alloc
iova
From: Yunfei Wang
In alloc_iova_fast function, if __alloc_and_insert_iova_range fail,
alloc_iova_fast will try flushing rcache and retry alloc iova, but
this has an issue:
Since __alloc_and_insert_iova_range fail will set the current alloc
iova size to max32_alloc_size (iovad->max32_alloc_size =
