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    SubjectRe: [Fastboot] [CFT] ELF Relocatable x86 and x86_64 bzImages
    On Mon, Jul 31, 2006 at 04:25:20PM -0400, Vivek Goyal wrote:
    > On Mon, Jul 31, 2006 at 10:19:04AM -0600, Eric W. Biederman wrote:
    > >
    > > I have spent some time and have gotten my relocatable kernel patches
    > > working against the latest kernels. I intend to push this upstream
    > > shortly.
    > >
    > > Could all of the people who care take a look and test this out
    > > to make certain that it doesn't just work on my test box?
    > >
    > Hi Eric,
    >
    > Currently I am testing your patches on i386. With CONFIG_RELOCATABLE=y
    > kernel boots fine and kexec also works.
    >
    > But my kernel hangs on kexec on panic case. It hangs early in
    > decompress_kernel(). Kernel hangs at following condition.
    >
    > + if (((u32)output - CONFIG_PHYSICAL_START) & 0x3fffff)
    > + error("Destination address not 4M aligned");
    >

    Ok. I am decompressing the kernel to 16MB and after reducing 1MB of
    CONFIG_PHYSICAL_START I am left with 15MB which is not 4M aligned
    hence I seems to be running into it.

    I changed it to

    if ((u32)output) & 0x3fffff)

    and kdump kernel booted fine. But this will run into issues if I load
    kernel at 1MB.

    I got a dump question. Why do I have to load the kernel at 4MB alignment?
    Existing kernel boots loads at 1MB, which is non 4MB aligned and it works
    fine?

    Thanks
    Vivek
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