linux-kernel - Re: [PATCH v2 3/3] xen/swiotlb: remember having called xen_create_contiguous

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Message-ID: <eebb0275-9418-717f-97d7-5e55917f46fd@oracle.com>
Date:   Thu, 30 May 2019 08:46:39 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Christoph Hellwig <hch@...radead.org>,
        Juergen Gross <jgross@...e.com>
Cc:     linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH v2 3/3] xen/swiotlb: remember having called
 xen_create_contiguous_region()

On 5/30/19 5:04 AM, Christoph Hellwig wrote:
> Please don't add your private flag to page-flags.h.  The whole point of
> the private flag is that you can use it in any way you want withou
> touching the common code.


There is already a bunch of aliases for various sub-components
(including Xen) in page-flags.h for private flags, which is why I
suggested we do the same for the new use case. Adding this new alias
will keep flag usage consistent.

-boris