Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN

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To: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Damien Le Moal <dlemoal@xxxxxxxxxx>
Subject: Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
From: Yihang Li <liyihang9@xxxxxxxxxx>
Date: Thu, 28 Mar 2024 16:00:49 +0800
Cc: John Garry <john.g.garry@xxxxxxxxxx>, <yanaijie@xxxxxxxxxx>, <jejb@xxxxxxxxxxxxx>, <martin.petersen@xxxxxxxxxx>, <chenxiang66@xxxxxxxxxxxxx>, <linux-scsi@xxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, <linuxarm@xxxxxxxxxx>, <prime.zeng@xxxxxxxxxx>, <yangxingui@xxxxxxxxxx>, <liyihang9@xxxxxxxxxx>
In-reply-to: <ZgUgMcOC8DKbOVsN@infradead.org>
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1


On 2024/3/28 15:45, Christoph Hellwig wrote:
> On Thu, Mar 28, 2024 at 04:36:12PM +0900, Damien Le Moal wrote:
>> My bad: it is kmalloc() that can return something aligned to 8B...
> 
> Yes, that's new on arm64, and possibly soon riscv.

Thanks for the discussion, I will still aligned to ARCH_DMA_MINALIGN in v4.

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References:
- [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Yihang Li
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Damien Le Moal
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: John Garry
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Christoph Hellwig
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Yihang Li
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Damien Le Moal
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Christoph Hellwig
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Damien Le Moal
- Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN
  - From: Christoph Hellwig

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