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From: Christoph Hellwig <hch@lst.de>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Roger Quadros <rogerq@ti.com>, Tony Lindgren <tony@atomide.com>,
	Christoph Hellwig <hch@lst.de>,
	yan-liu@ti.com, linux-omap@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Rob Herring <robh+dt@kernel.org>, "Nori, Sekhar" <nsekhar@ti.com>
Subject: Re: [PATCH] dra7: sata: Fix SATA with CONFIG_ARM_LPAE enabled
Date: Thu, 5 Mar 2020 16:16:36 +0100	[thread overview]
Message-ID: <20200305151636.GA4870@lst.de> (raw)
In-Reply-To: <00951cc4-6cbf-a3cf-5f2c-007d5b43ac5b@arm.com>

On Thu, Mar 05, 2020 at 12:30:56PM +0000, Robin Murphy wrote:
> Right - LPAE configs should be getting dma-direct ops since 5.3, which 
> already respect the limit. For non-LPAE configs it means you go from being 
> broken from having no limit at all, to having a limit set but not 
> respected, which is still equally broken, but no *more* so than before.

Actually, dma-direct doesn't automatically respect the bus limit.  For
various architectures including arm it uses the arch_dma_alloc callout,
which for arm just uses the existing arm coherent allocator.

Thay being said I'm still looking for reviewers for the arm dma coherent
allocator bus limit fix..

  reply	other threads:[~2020-03-05 15:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-04  9:00 Roger Quadros
2020-03-04 16:20 ` Tony Lindgren
2020-03-05 12:05   ` Roger Quadros
2020-03-05 12:30     ` Robin Murphy
2020-03-05 15:16       ` Christoph Hellwig [this message]
2020-03-05 16:04 ` Robin Murphy
2020-03-05 16:46   ` Roger Quadros
2020-03-06 15:08     ` Tony Lindgren

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