Re: [MINI-OS PATCH 00/12] kexec: add kexec support to Mini-OS

[Juergen Gross <jgross@xxxxxxxx>]

Ping?

On 21.03.25 10:24, Juergen Gross wrote:
> Add basic kexec support to Mini-OS for running in x86 PVH mode.
>
> With this series applied it is possible to activate another kernel
> from within Mini-OS.
>
> Right now no Xen related teardown is done (so no reset of grant table,
> event channels, PV devices). These should be added via kexec callbacks
> which are added as a framework.
>
> This is a major building block for support of Xenstore-stubdom live
> update (in fact I've tested the kexec path to work using the PVH
> variant of Xenstore-stubdom).
>
> Juergen Gross (12):
>    add kexec framework
>    Mini-OS: add final kexec stage
>    mini-os: add elf.h
>    mini-os: analyze new kernel for kexec
>    mini-os: kexec: finalize parameter location and size
>    mini-os: reserve memory below boundary
>    mini-os: kexec: build parameters for new kernel
>    mini-os: kexec: move used pages away for new kernel
>    Mini-OS: mm: change set_readonly() to change_readonly()
>    Mini-OS: kexec: switch read-only area to be writable again
>    mini-os: kexec: add kexec callback functionality
>    mini-os: kexec: do the final kexec step
>
>   Config.mk                  |   1 +
>   Makefile                   |   1 +
>   arch/x86/kexec.c           | 273 +++++++++++++++++++++++++++++
>   arch/x86/minios-x86.lds.S  |  16 ++
>   arch/x86/mm.c              | 238 ++++++++++++++++++++------
>   arch/x86/testbuild/all-no  |   1 +
>   arch/x86/testbuild/all-yes |   2 +
>   arch/x86/testbuild/kexec   |   4 +
>   arch/x86/x86_hvm.S         |  46 +++++
>   include/elf.h              | 340 +++++++++++++++++++++++++++++++++++++
>   include/kexec.h            |  63 +++++++
>   include/mm.h               |   8 +
>   include/x86/os.h           |   5 +
>   kexec.c                    | 253 +++++++++++++++++++++++++++
>   mm.c                       |  89 +++++++++-
>   15 files changed, 1289 insertions(+), 51 deletions(-)
>   create mode 100644 arch/x86/kexec.c
>   create mode 100644 arch/x86/testbuild/kexec
>   create mode 100644 include/elf.h
>   create mode 100644 include/kexec.h
>   create mode 100644 kexec.c

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