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Re: [XEN PATCH 1/3] libxl: Implement QEMU command line probe
- To: Anthony PERARD <anthony.perard@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jason Andryuk <jason.andryuk@xxxxxxx>
- Date: Tue, 27 Aug 2024 18:17:05 -0400
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- Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>
- Delivery-date: Tue, 27 Aug 2024 23:26:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 2024-08-27 06:03, Anthony PERARD wrote:
From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Starting with QEMU 9.0, the option "-chroot", that we use for the
"dmrestrict" feature, is removed. We need to find out which to use
between "-chroot" and "-run-with chroot=dir".
This patch implement the machinery to spawn QEMU, and to run the QMP
command "query-command-line-options" but doesn't yet look at the
actual result. Whether or not to use "-run-with chroot=dir" will be
implemented in a follow up patch.
The command line used to spawn the qemu we want to probe is mostly
similar to the one we already use for the device model, "-machine
none" comes from libvirt.
This patch implement the probing on qemu-xen, even if we probably not
going to use the result. We could check the feature wanted for the
domain been created, but this could get complicated fairly quickly.
"domain being created"?
We already need to check the options "b_info->dm_restrict" for
"-chroot" and "state->dm_runas" for "-runas" (which is deprecated).
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
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