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From: Greg KH <greg@kroah.com>
To: Jianxiong Gao <jxgao@google.com>
Cc: stable@vger.kernel.org
Subject: Re: [PATCH v5.10 0/8] preserve DMA offsets when using swiotlb
Date: Wed, 7 Apr 2021 14:51:53 +0200	[thread overview]
Message-ID: <YG2q6Tm58tWRBtmK@kroah.com> (raw)
In-Reply-To: <20210405210230.1707074-1-jxgao@google.com>

On Mon, Apr 05, 2021 at 09:02:22PM +0000, Jianxiong Gao wrote:
> Hi all,
> 
> This series of backports fixes the SWIOTLB library to maintain the
> page offset when mapping a DMA address. The bug that motivated this
> patch series manifested when running a 5.4 kernel as a SEV guest with
> an NVMe device. However, any device that infers information from the
> page offset and is accessed through the SWIOTLB will benefit from this
> bug fix.

But this is 5.10, not 5.4, why mention 5.4 here?

And you are backporting a 5.12-rc feature to 5.10, what happened to
5.11?

Why not just use 5.12 to get this new feature instead of using an older
kernel?  It's not like this has ever worked before, right?

thanks,

greg k-h

  parent reply	other threads:[~2021-04-07 12:51 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-05 21:02 [PATCH v5.10 0/8] preserve DMA offsets when using swiotlb Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 1/8] driver core: add a min_align_mask field to struct device_dma_parameters Jianxiong Gao
2021-04-07 12:50   ` Greg KH
2021-04-05 21:02 ` [PATCH v5.10 2/8] swiotlb: factor out an io_tlb_offset helper Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 3/8] swiotlb: factor out a nr_slots helper Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 4/8] swiotlb: clean up swiotlb_tbl_unmap_single Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 5/8] swiotlb: refactor swiotlb_tbl_map_single Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 6/8] swiotlb: don't modify orig_addr in swiotlb_tbl_sync_single Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 7/8] swiotlb: respect min_align_mask Jianxiong Gao
2021-04-05 21:02 ` [PATCH v5.10 8/8] nvme-pci: set min_align_mask Jianxiong Gao
2021-04-07 12:51 ` Greg KH [this message]
2021-04-20 23:38   ` [PATCH v5.10 0/8] preserve DMA offsets when using swiotlb Jianxiong Gao
2021-04-23 15:14     ` Greg KH
2021-04-23 17:28       ` Jianxiong Gao
2021-04-23 22:10         ` Jianxiong Gao
2021-04-23 22:33           ` Marc Orr
2021-04-24 14:43         ` Greg KH
2021-04-26 18:00           ` Jianxiong Gao
2021-04-28 16:18             ` Sasha Levin

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