From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
To: John Garry <john.garry@huawei.com>,
joro@8bytes.org, will@kernel.org, jejb@linux.ibm.com,
martin.petersen@oracle.com, hch@lst.de, m.szyprowski@samsung.com,
robin.murphy@arm.com
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-ide@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-scsi@vger.kernel.org, liyihang6@hisilicon.com,
chenxiang66@hisilicon.com, thunder.leizhen@huawei.com
Subject: Re: [PATCH 2/4] dma-iommu: Add iommu_dma_opt_mapping_size()
Date: Mon, 23 May 2022 16:32:52 +0900 [thread overview]
Message-ID: <2b4426a6-88ac-1bce-ea80-52902897cd0f@opensource.wdc.com> (raw)
In-Reply-To: <655b915c-e8d2-d65b-676a-a51e788f1695@huawei.com>
On 2022/05/23 16:01, John Garry wrote:
> On 21/05/2022 00:33, Damien Le Moal wrote:
>
> Hi Damien,
>
>>> +unsigned long iova_rcache_range(void)
>> Why not a size_t return type ?
>
> The IOVA code generally uses unsigned long for size/range while
> dam-iommu uses size_t as appropiate, so I'm just sticking to that.
OK.
>
>>
>>> +{
>>> + return PAGE_SIZE << (IOVA_RANGE_CACHE_MAX_SIZE - 1);
>>> +}
>>> +
>
> Thanks,
> John
--
Damien Le Moal
Western Digital Research
next prev parent reply other threads:[~2022-05-23 7:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-20 8:23 [PATCH 0/4] DMA mapping changes for SCSI core John Garry
2022-05-20 8:23 ` [PATCH 1/4] dma-mapping: Add dma_opt_mapping_size() John Garry
2022-05-20 23:32 ` Damien Le Moal
2022-05-20 8:23 ` [PATCH 2/4] dma-iommu: Add iommu_dma_opt_mapping_size() John Garry
2022-05-20 23:33 ` Damien Le Moal
2022-05-23 7:01 ` John Garry
2022-05-23 7:32 ` Damien Le Moal [this message]
2022-05-23 7:34 ` Damien Le Moal
2022-05-20 8:23 ` [PATCH 3/4] scsi: core: Cap shost max_sectors according to DMA optimum mapping limits John Garry
2022-05-20 23:30 ` Damien Le Moal
2022-05-23 6:53 ` John Garry
2022-05-23 7:33 ` Damien Le Moal
2022-05-23 11:08 ` Dan Carpenter
2022-05-23 11:56 ` John Garry
2022-05-20 8:23 ` [PATCH 4/4] libata-scsi: Cap ata_device->max_sectors according to shost->max_sectors John Garry
2022-05-20 23:34 ` Damien Le Moal
2022-05-22 13:13 ` [PATCH 0/4] DMA mapping changes for SCSI core Christoph Hellwig
2022-05-22 22:22 ` Damien Le Moal
2022-05-23 12:00 ` John Garry
2022-05-24 2:41 ` Martin K. Petersen
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