Hi Marc,
On 2021/3/12 16:52, Marc Zyngier wrote:
> On Thu, 11 Mar 2021 14:28:17 +,
> Keqian Zhu wrote:
>>
>> Hi Marc,
>>
>> On 2021/3/11 16:43, Marc Zyngier wrote:
>>> Digging this patch back from my Inbox...
>> Yeah, thanks ;-)
>>
>>>
>>> On Fri, 22 Jan 2021 08:36:50 +,
>>> Keqian Zhu w
Hi Marc,
On 2021/3/11 16:43, Marc Zyngier wrote:
> Digging this patch back from my Inbox...
Yeah, thanks ;-)
>
> On Fri, 22 Jan 2021 08:36:50 +,
> Keqian Zhu wrote:
>>
>> The MMIO region of a device maybe huge (GB level), try to use block
>> mapping in stage2 to speedup both map and unmap.
Hi Marc,
Do you have further suggestion on this? Block mapping do bring obvious benefit.
Thanks,
Keqian
On 2021/1/25 19:25, Keqian Zhu wrote:
> Hi Marc,
>
> On 2021/1/22 17:45, Marc Zyngier wrote:
>> On 2021-01-22 08:36, Keqian Zhu wrote:
>>> The MMIO region of a device maybe huge (GB level), t
I forget to give the link of the bugfix I mentioned below :-).
[1] https://lkml.org/lkml/2020/5/1/1294
On 2021/1/25 19:25, Keqian Zhu wrote:
> Hi Marc,
>
> On 2021/1/22 17:45, Marc Zyngier wrote:
>> On 2021-01-22 08:36, Keqian Zhu wrote:
>>> The MMIO region of a device maybe huge (GB level), try
Hi Marc,
On 2021/1/22 17:45, Marc Zyngier wrote:
> On 2021-01-22 08:36, Keqian Zhu wrote:
>> The MMIO region of a device maybe huge (GB level), try to use block
>> mapping in stage2 to speedup both map and unmap.
>>
>> Especially for unmap, it performs TLBI right after each invalidation
>> of PTE.
On 2021-01-22 08:36, Keqian Zhu wrote:
The MMIO region of a device maybe huge (GB level), try to use block
mapping in stage2 to speedup both map and unmap.
Especially for unmap, it performs TLBI right after each invalidation
of PTE. If all mapping is of PAGE_SIZE, it takes much time to handle
GB
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