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Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig
From: |
Daniel Thompson |
Subject: |
Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig |
Date: |
Tue, 22 Apr 2014 10:44:14 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
On 17/04/14 21:35, Jason Gunthorpe wrote:
>>> The above is useful for loading the raw uncompressed Image without
>>> carrying the full ELF baggage.
>>
>> What exactly is the full ELF baggage? Aren't there existing mechanisms to
>> omit
>> debugging symbols, for example, if size is of concern?
>
> FWIW, it is a small non-intrusive change to produce ELFs with the
> proper LMA, if it is useful for specialized tooling, here is the 3.14
> version of the patch I created (I see it needs a bit of cleanup..)
> You must also force PATCH_PHYS_VIRT off.
>
> The ELF also has the correct entry point address, so ELF tooling can
> just jump into it, after setting the proper register values according
> to the boot protocol.
That might be a useful approach for single platform kernels but I don't
think such an approach can work for multi-arch kernels since, because
the RAM can be located anywhere in the address map, the physical load
address is platform dependant.
Daniel.
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, (continued)
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Peter Maydell, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Jason Gunthorpe, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Michal Simek, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Jason Gunthorpe, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Jason Gunthorpe, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Arnd Bergmann, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Arnd Bergmann, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig,
Daniel Thompson <=
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Jason Gunthorpe, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Nicolas Pitre, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/22
Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Rob Herring, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Nicolas Pitre, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Rob Herring, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Rob Herring, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Nicolas Pitre, 2014/04/18