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


  • To: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>, minios-devel@xxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Jürgen Groß <jgross@xxxxxxxx>
  • Date: Sun, 23 Mar 2025 08:01:10 +0100
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  • Delivery-date: Sun, 23 Mar 2025 07:01:29 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 23.03.25 00:54, Samuel Thibault wrote:
Hello,

Juergen Gross, le ven. 21 mars 2025 10:24:39 +0100, a ecrit:
Add basic kexec support to Mini-OS for running in x86 PVH mode.

I am wondering if you had considered using libxc to implement this?
The original pv-grub1 is doing it (xen/stubdom/grub/kexec.c)

The libxc (or more precise: libxenguest) usage is needed there only for
construction of the PV specific parts like the initial page tables and
the p2m map. The main kexec functionality as I need it for PVH stubdom
is in grub itself.

Additionally I've worked hard to get rid of non-stable Xen libraries in
Xenstore-stubdom. Adding them again just after removal would be weird.


Juergen

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