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From: Vinod Koul <vkoul@kernel.org>
To: Dave Jiang <dave.jiang@intel.com>
Cc: dmaengine@vger.kernel.org
Subject: Re: [PATCH] dmaengine: idxd: rotate portal address for better performance
Date: Wed, 28 Jul 2021 17:57:10 +0530	[thread overview]
Message-ID: <YQFNHjGoW8Ah+iv8@matsya> (raw)
In-Reply-To: <162681372446.1968485.10634280461681015569.stgit@djiang5-desk3.ch.intel.com>

On 20-07-21, 13:42, Dave Jiang wrote:
> The device submission portal is on a 4k page and any of those 64bit aligned
> address on the page can be used for descriptor submission. By rotating the
> offset through the 4k range and prevent successive writes to the same MMIO
> address, performance improvement is observed through testing.

Applied, thanks

-- 
~Vinod

      reply	other threads:[~2021-07-28 12:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 20:42 Dave Jiang
2021-07-28 12:27 ` Vinod Koul [this message]

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