From: Paul Brook <paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
To: qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org
Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
jeremy.kerr-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org
Subject: Re: [Qemu-devel] [RFC PATCH 1/7] devicetree: Add 8k instead of double dtb size when reserving extra memory
Date: Fri, 9 Apr 2010 13:00:57 +0100 [thread overview]
Message-ID: <201004091300.57740.paul@codesourcery.com> (raw)
In-Reply-To: <20100407041002.20274.51604.stgit@angua>
> If a small 'seed' dtb file is loaded into qemu and then heavily modified
> (say for runtime population of all the device nodes), then 2x the dtb
> size turns out not to be very much.
>
> This patch changes the device tree loading code to add a fixed 8k of
> additional space to the dtb buffer.
In that case you almost certainly want double+8k. Or have the calleee tell you
how much they're expecting to grow the tree.
Paul
WARNING: multiple messages have this Message-ID (diff)
From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Grant Likely <grant.likely@secretlab.ca>,
devicetree-discuss@lists.ozlabs.org, jeremy.kerr@canonical.com
Subject: Re: [Qemu-devel] [RFC PATCH 1/7] devicetree: Add 8k instead of double dtb size when reserving extra memory
Date: Fri, 9 Apr 2010 13:00:57 +0100 [thread overview]
Message-ID: <201004091300.57740.paul@codesourcery.com> (raw)
In-Reply-To: <20100407041002.20274.51604.stgit@angua>
> If a small 'seed' dtb file is loaded into qemu and then heavily modified
> (say for runtime population of all the device nodes), then 2x the dtb
> size turns out not to be very much.
>
> This patch changes the device tree loading code to add a fixed 8k of
> additional space to the dtb buffer.
In that case you almost certainly want double+8k. Or have the calleee tell you
how much they're expecting to grow the tree.
Paul
next prev parent reply other threads:[~2010-04-09 12:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-07 4:09 [RFC PATCH 0/7] QEMU patches to generate FDT from qdevs Grant Likely
2010-04-07 4:09 ` [Qemu-devel] " Grant Likely
2010-04-07 4:10 ` [RFC PATCH 1/7] devicetree: Add 8k instead of double dtb size when reserving extra memory Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-09 12:00 ` Paul Brook [this message]
2010-04-09 12:00 ` Paul Brook
[not found] ` <201004091300.57740.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2010-04-09 14:55 ` Grant Likely
2010-04-09 14:55 ` Grant Likely
2010-04-07 4:10 ` [RFC PATCH 2/7] devicetree: auto-populate the device tree with qdev data Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-07 4:10 ` [RFC PATCH 3/7] devicetree: add helper for determining IRQ properties in the device tree Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-07 4:10 ` [RFC PATCH 4/7] devicetree: Add sysbus fdt populate hooks Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-07 4:10 ` [RFC PATCH 5/7] devicetree: Add helper to register devices with an fdt_populate hook Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-07 4:10 ` [RFC PATCH 6/7] devicetree: Add fdt_populate hook to pl011 device Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-07 4:10 ` [RFC PATCH 7/7] devicetree: Add fdt_populate hook to smc91x device Grant Likely
2010-04-07 4:10 ` [Qemu-devel] " Grant Likely
2010-04-07 7:01 ` [RFC PATCH 0/7] QEMU patches to generate FDT from qdevs Jeremy Kerr
2010-04-07 7:01 ` [Qemu-devel] " Jeremy Kerr
[not found] ` <201004071501.34711.jeremy.kerr-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2010-04-07 20:58 ` Grant Likely
2010-04-07 20:58 ` [Qemu-devel] " Grant Likely
2010-04-07 19:10 ` [Qemu-devel] " Blue Swirl
2010-04-07 19:10 ` Blue Swirl
[not found] ` <k2kf43fc5581004071210v810be251nf77b7ab469004e5c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-07 20:57 ` Grant Likely
2010-04-07 20:57 ` Grant Likely
2010-04-09 12:07 ` Paul Brook
2010-04-09 12:07 ` Paul Brook
[not found] ` <201004091307.22473.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2010-04-09 14:47 ` Grant Likely
2010-04-09 14:47 ` Grant Likely
[not found] ` <h2ofa686aa41004090747w2422cedasb6f4b51633637816-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-09 15:57 ` Paul Brook
2010-04-09 15:57 ` Paul Brook
[not found] ` <201004091657.10684.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2010-04-09 16:35 ` Grant Likely
2010-04-09 16:35 ` Grant Likely
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