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From: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
To: Sherry Sun <sherry.sun@nxp.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	"sudeep.dutt@intel.com" <sudeep.dutt@intel.com>,
	"ashutosh.dixit@intel.com" <ashutosh.dixit@intel.com>,
	"arnd@arndb.de" <arnd@arndb.de>, "kishon@ti.com" <kishon@ti.com>,
	"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	dl-linux-imx <linux-imx@nxp.com>
Subject: Re: [PATCH V3 2/4] misc: vop: do not allocate and reassign the used ring
Date: Tue, 27 Oct 2020 07:28:02 +0100
Message-ID: <20201027062802.GC207971@kroah.com> (raw)
In-Reply-To: <VI1PR04MB4960E9ECD7310B8CA1E053DC92190@VI1PR04MB4960.eurprd04.prod.outlook.com>

On Mon, Oct 26, 2020 at 03:04:45AM +0000, Sherry Sun wrote:
> Hi Greg & Christoph,
> 
> > Subject: Re: [PATCH V3 2/4] misc: vop: do not allocate and reassign the used
> > ring
> > 
> > On Thu, Oct 22, 2020 at 01:06:36PM +0800, Sherry Sun wrote:
> > > We don't need to allocate and reassign the used ring here and remove
> > > the used_address_updated flag.Since RC has allocated the entire vring,
> > > including the used ring. Simply add the corresponding offset can get
> > > the used ring address.
> > 
> > Someone needs to verify this vs the existing intel implementations.
> 
> Hi Greg, @gregkh@linuxfoundation.org, sorry I don't have the Intel MIC devices so cannot test it, do you know anyone who can help test this patch changes on the Intel MIC platform? Thanks.

Why not ask the authors/maintainers of that code?

greg k-h

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-22  5:06 [PATCH V3 0/4] Change vring space from nomal memory to dma coherent memory Sherry Sun
2020-10-22  5:06 ` [PATCH V3 1/4] misc: vop: change the way of allocating vring and device page Sherry Sun
2020-10-22  7:58   ` kernel test robot
2020-10-23  9:25   ` Christoph Hellwig
2020-10-26  2:54     ` Sherry Sun
2020-10-22  5:06 ` [PATCH V3 2/4] misc: vop: do not allocate and reassign the used ring Sherry Sun
2020-10-22  8:53   ` kernel test robot
2020-10-23  9:26   ` Christoph Hellwig
2020-10-26  3:04     ` Sherry Sun
2020-10-27  6:28       ` gregkh [this message]
2020-10-22  5:06 ` [PATCH V3 3/4] misc: vop: simply return the saved dma address instead of virt_to_phys Sherry Sun
2020-10-22  5:06 ` [PATCH V3 4/4] misc: vop: mapping kernel memory to user space as noncached Sherry Sun
2020-10-23  9:28   ` Christoph Hellwig

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