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Date:   Mon, 21 Jun 2021 13:14:48 +0900
From:   'Dominique MARTINET' <dominique.martinet@atmark-techno.com>
To:     Chanho Park <chanho61.park@samsung.com>
Cc:     'Jianxiong Gao' <jxgao@google.com>,
        'Christoph Hellwig' <hch@lst.de>,
        'Konrad Rzeszutek Wilk' <konrad@darnok.org>,
        'Konrad Rzeszutek Wilk' <konrad.wilk@oracle.com>,
        'Linus Torvalds' <torvalds@linux-foundation.org>,
        'Horia =?utf-8?Q?Geant=C4=83'?= <horia.geanta@nxp.com>,
        linux-kernel@vger.kernel.org, 'Lukas Hartmann' <lukas@mntmn.com>,
        'Aymen Sghaier' <aymen.sghaier@nxp.com>,
        'Herbert Xu' <herbert@gondor.apana.org.au>,
        "'David S. Miller'" <davem@davemloft.net>,
        linux-crypto@vger.kernel.org, iommu@lists.linux-foundation.org,
        'Marc Orr' <marcorr@google.com>,
        'Erdem Aktas' <erdemaktas@google.com>,
        'Peter Gonda' <pgonda@google.com>,
        'Bumyong Lee' <bumyong.lee@samsung.com>
Subject: Re: swiotlb/caamjr regression (Was: [GIT PULL] (swiotlb)
 stable/for-linus-5.12)
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Chanho Park wrote on Mon, Jun 21, 2021 at 11:55:22AM +0900:
> Sure. No problem. But, the patch was already stacked on Konrad's tree
> and linux-next as well.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb.git/commit/?h=devel/for-linus-5.14&id=33d1641f38f0c327bc3e5c21de585c77a6512bc6 

That patch is slightly different, it's a rewrite Konrad did that mixes
in Linus' suggestion[1], which breaks things for the NVMe usecase
Jianxiong Gao has.

[1] offset = (tlb_addr - mem->start) & (IO_TLB_SIZE - 1)


Konrad is aware so I think it shouldn't be submitted :)

-- 
Dominique