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Re: [Qemu-devel] [PATCH] loader: pad kernel size when loaded from a uIm
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [PATCH] loader: pad kernel size when loaded from a uImage |
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Date: |
Tue, 03 Aug 2010 13:09:05 -0700 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.7) Gecko/20100720 Fedora/3.1.1-1.fc13 Thunderbird/3.1.1 |
On 08/02/2010 01:35 PM, Hollis Blanchard wrote:
>> Of those archs, only 2 actually use the return value of load_uimage
>> to decide where to place blobs. PPC and MB. MB doesn't want any
>> magic applied to the return value. That leaves us with _ONE_ single
>> arch that needs magic that IMO is broken. You are trying to guess the
>> size of the loaded image's .bss area by adding a 16th of the uimage size?
>
> Accounting for BSS hardly counts as "magic", I think. :)
A 1/16 factor is not "accounting", it's guessing i.e. magic.
I'm not sure why the u-image format doesn't include the size
of the bss, but my guess is that it's expecting the kernel to
zero its bss segment at startup. File a bug with either the
kernel and/or the u-boot project if you like.
r~