linux-kernel - Re: [PATCH] iommu/amd: Fix event counter availability check

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Date:   Tue, 23 Feb 2021 00:59:41 +0700
From:   Suravee Suthikulpanit <suravee.suthikulpanit@....com>
To:     Paul Menzel <pmenzel@...gen.mpg.de>
Cc:     linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
        Alexander Monakov <amonakov@...ras.ru>,
        Joerg Roedel <joro@...tes.org>
Subject: Re: [PATCH] iommu/amd: Fix event counter availability check

This fix has been accepted in the upstream recently.

https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/commit/?h=x86/amd

Could you please give this a try?

Thanks,
Suravee

On 2/21/21 8:49 PM, Paul Menzel wrote:
> Dear Suravee,
> 
> 
> Am 17.09.20 um 19:55 schrieb Alexander Monakov:
>> On Tue, 16 Jun 2020, Suravee Suthikulpanit wrote:
>>
>>>>> Instead of blindly moving the code around to a spot that would just work,
>>>>> I am trying to understand what might be required here. In this case,
>>>>> the init_device_table_dma()should not be needed. I suspect it's the IOMMU
>>>>> invalidate all command that's also needed here.
>>>>>
>>>>> I'm also checking with the HW and BIOS team. Meanwhile, could you please
>>>>> give
>>>>> the following change a try:
>>>> Hello. Can you give any update please?
> 
> […]
> 
>>> Sorry for late reply. I have a reproducer and working with the HW team to
>>> understand the issue.
>>> I should be able to provide update with solution by the end of this week.
>>
>> Hello, hope you are doing well. Has this investigation found anything?
> 
> I am wondering the same. It’d be great to have this fixed in the upstream Linux kernel.
> 
> 
> Kind regards,
> 
> Paul