linux-kernel - Re: [PATCH v2] iommu/vt-d: Force to flush iotlb before creating superpage

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Message-Id: <3D6CEB0B-101D-4C40-9BFB-68ABC85B084D@gmail.com>
Date:   Fri, 30 Apr 2021 15:50:14 -0700
From:   Nadav Amit <nadav.amit@...il.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     "Longpeng(Mike)" <longpeng2@...wei.com>,
        iommu@...ts.linux-foundation.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Gonglei <arei.gonglei@...wei.com>, stable@...r.kernel.org
Subject: Re: [PATCH v2] iommu/vt-d: Force to flush iotlb before creating
 superpage



> On Apr 15, 2021, at 7:13 AM, Joerg Roedel <joro@...tes.org> wrote:
> 
> On Thu, Apr 15, 2021 at 08:46:28AM +0800, Longpeng(Mike) wrote:
>> Fixes: 6491d4d02893 ("intel-iommu: Free old page tables before creating superpage")
>> Cc: <stable@...r.kernel.org> # v3.0+
>> Link: https://lore.kernel.org/linux-iommu/670baaf8-4ff8-4e84-4be3-030b95ab5a5e@huawei.com/
>> Suggested-by: Lu Baolu <baolu.lu@...ux.intel.com>
>> Signed-off-by: Longpeng(Mike) <longpeng2@...wei.com>
>> ---
>> v1 -> v2:
>>  - add Joerg
>>  - reconstruct the solution base on the Baolu's suggestion
>> ---
>> drivers/iommu/intel/iommu.c | 52 +++++++++++++++++++++++++++++++++------------
>> 1 file changed, 38 insertions(+), 14 deletions(-)
> 
> Applied, thanks.
> 

Err.. There is a bug in my patch, and some other problem. I will
investigate and get back to you.


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