linux-kernel - Re: [PATCH v2 0/4] iommu/iova: Add CPU hotplug handler to flush rcaches to core code

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Message-ID: <9aad6e94-ecb7-ca34-7f7d-3df6e43e9c42@huawei.com>
Date:   Tue, 6 Apr 2021 09:29:50 +0100
From:   John Garry <john.garry@...wei.com>
To:     Will Deacon <will@...nel.org>
CC:     <joro@...tes.org>, <dwmw2@...radead.org>,
        <baolu.lu@...ux.intel.com>, <robin.murphy@....com>,
        <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>
Subject: Re: [PATCH v2 0/4] iommu/iova: Add CPU hotplug handler to flush
 rcaches to core code

On 25/03/2021 17:53, Will Deacon wrote:
> On Thu, Mar 25, 2021 at 08:29:57PM +0800, John Garry wrote:
>> The Intel IOMMU driver supports flushing the per-CPU rcaches when a CPU is
>> offlined.
>>
>> Let's move it to core code, so everyone can take advantage.
>>
>> Also throw in a patch to stop exporting free_iova_fast().
>>
>> Differences to v1:
>> - Add RB tags (thanks!)
>> - Add patch to stop exporting free_iova_fast()
>> - Drop patch to correct comment
>> - Add patch to delete iommu_dma_free_cpu_cached_iovas() and associated
>>    changes
>>
>> John Garry (4):
>>    iova: Add CPU hotplug handler to flush rcaches
>>    iommu/vt-d: Remove IOVA domain rcache flushing for CPU offlining
>>    iommu: Delete iommu_dma_free_cpu_cached_iovas()
>>    iommu: Stop exporting free_iova_fast()
> Looks like this is all set for 5.13, so hopefully Joerg can stick it in
> -next for a bit more exposure.
> 


Hi Joerg,

Can you kindly consider picking this up now?

Thanks,
John