From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Alexandre Courbot <gnurou@gmail.com>
Cc: "Stéphane Marchesin" <stephane.marchesin@gmail.com>,
"Lucas Stach" <l.stach@pengutronix.de>,
"Maarten Lankhorst" <maarten.lankhorst@canonical.com>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"Ben Skeggs" <bskeggs@redhat.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [Nouveau] [PATCH v2 2/3] drm/ttm: introduce dma cache sync helpers
Date: Thu, 26 Jun 2014 17:10:55 +0100 [thread overview]
Message-ID: <20140626161055.GX32514@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CAAVeFuLU04rk1DWMhVJV=ktVCpq4js38p1ipCr1jh1x72b=GZw@mail.gmail.com>
On Thu, Jun 26, 2014 at 11:53:20PM +0900, Alexandre Courbot wrote:
> We don't plan to rely on CMA for too long. IOMMU support is on the way
> and should make our life easier, although no matter the source of
> memory, we will still have the issue of the lowmem mappings.
When it comes to DMA memory, talking about lowmem vs highmem is utterly
meaningless.
The lowmem/highmem split is entirely a software concept and is completely
adjustable. An extreme example is that you can boot any platform with
more than 32MB of memory with 32MB of lowmem and the remainder as
highmem.
--
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
next prev parent reply other threads:[~2014-06-26 16:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-24 9:54 [PATCH v2 0/3] drm/ttm: nouveau: memory coherency for ARM Alexandre Courbot
2014-06-24 9:54 ` [PATCH v2 1/3] drm/ttm: recognize ARM arch in ioprot handler Alexandre Courbot
2014-06-24 9:54 ` [PATCH v2 2/3] drm/ttm: introduce dma cache sync helpers Alexandre Courbot
2014-06-24 10:02 ` Russell King - ARM Linux
2014-06-24 10:33 ` Alexandre Courbot
2014-06-24 10:55 ` Alexandre Courbot
2014-06-24 12:23 ` Alexandre Courbot
2014-06-24 12:27 ` [Nouveau] " Maarten Lankhorst
2014-06-24 13:25 ` Lucas Stach
2014-06-24 13:52 ` Alexandre Courbot
2014-06-24 13:58 ` Lucas Stach
2014-06-24 14:03 ` Alexandre Courbot
2014-06-26 14:50 ` Alexandre Courbot
2014-06-25 4:00 ` Stéphane Marchesin
2014-06-26 14:53 ` Alexandre Courbot
2014-06-26 16:10 ` Russell King - ARM Linux [this message]
2014-06-26 23:17 ` Alexandre Courbot
2014-06-27 12:08 ` Rob Clark
2014-06-24 13:09 ` Russell King - ARM Linux
2014-06-24 13:25 ` Alexandre Courbot
2014-06-24 9:54 ` [PATCH v2 3/3] drm/nouveau: hook up cache sync functions Alexandre Courbot
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