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[PATCH 0/3] kexec: Add support for UKI format kernel #9

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[PATCH 0/3] kexec: Add support for UKI format kernel #9

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Commits on Oct 14, 2024

  1. kexec: Introduce implicit_initrd_fd to pass internal initrd information 

    At present, initrd information is passed through --initrd args, and
handled until image load. But for the UKI case, the initrd may be stored
implicitly in the .initrd section.

It means that initrd is perceived at the probe stage. And there should
be a way to carry this information forward to the load stage. In oder to
implement that, introducing a global implicit_initrd_fd.

Signed-off-by: Pingfan Liu <[email protected]>
    Pingfan Liu committed Oct 14, 2024
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  2. kexec: Introduce UKI image parser 

    A UKI image is a PE file that consists of several sections, typically
including: .text, .data, .linux, .initrd, .cmdline, and others.

The kernel image is stored in the .linux section, which is one of the
formats currently recognized by kexec-tools. Therefore, the UKI parser
can be used to strip away the UKI layer, allowing the other parser to
continue the procession of the kernel image.

Signed-off-by: Pingfan Liu <[email protected]>
    Pingfan Liu committed Oct 14, 2024
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  3. arm64: Support UKI image format 

    Signed-off-by: Pingfan Liu <[email protected]>
    Pingfan Liu committed Oct 14, 2024
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