diff options
| author | Stefano Stabellini <sstabellini@kernel.org> | 2026-01-13 15:24:20 -0800 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2026-01-14 14:43:57 +0100 |
| commit | 763baca7bf8b36b8ff0e1ec6eb30dbfe99b18fd8 (patch) | |
| tree | 6e528f8967dd9e941cb13ea3b22bc601718d667f /Documentation/admin-guide | |
| parent | dc8ea8714311e549ee93a2b0bdd5487d20bfadbf (diff) | |
xen: introduce xen_console_io option
Xen can support console_io hypercalls for any domains, not just dom0,
depending on DEBUG and XSM policies. These hypercalls can be very useful
for development and debugging.
Introduce a kernel command line option xen_console_io to enable the
usage of console_io hypercalls for any domain upon request. When
xen_console_io is not specified, the current behavior is retained.
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Message-ID: <alpine.DEB.2.22.394.2601131522540.992863@ubuntu-linux-20-04-desktop>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a8d0afde7f85..68ab6fa72b68 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -8414,6 +8414,11 @@ Kernel parameters save/restore/migration must be enabled to handle larger domains. + xen_console_io [XEN,EARLY] + Boolean option to enable/disable the usage of the Xen + console_io hypercalls to read and write to the console. + Mostly useful for debugging and development. + xen_emul_unplug= [HW,X86,XEN,EARLY] Unplug Xen emulated devices Format: [unplug0,][unplug1] |