[xen stable-4.21] docs: Update console=pv requirement

[patchbot@xxxxxxx]

commit 3928945562505ebb0f7af525b4b3c01087e74d39
Author:     Teddy Astie <teddy.astie@xxxxxxxxxx>
AuthorDate: Wed Jun 3 11:36:46 2026 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Jun 3 11:36:46 2026 +0200

    docs: Update console=pv requirement
    
    PV console doesn't require Xen to be running as a shim and only
    requires CONFIG_XEN_GUEST and running as a Xen guest. Update the
    documentation accordingly.
    
    Fixes: 4f6609d6a665 ("x86/guest: use PV console for Xen/Dom0 I/O")
    Signed-off-by: Teddy Astie <teddy.astie@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: f47c2e96ab9b61debe18fc0c52faa1672a5d24f9
    master date: 2026-05-21 09:13:42 +0200
---
 docs/misc/xen-command-line.pandoc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/docs/misc/xen-command-line.pandoc 
b/docs/misc/xen-command-line.pandoc
index 34004ce282..9607aa77d4 100644
--- a/docs/misc/xen-command-line.pandoc
+++ b/docs/misc/xen-command-line.pandoc
@@ -446,8 +446,9 @@ the converse; transmitted and received characters will have 
their MSB
 cleared.  This allows a single port to be shared by two subsystems
 (e.g. console and debugger).
 
-`pv` indicates that Xen should use Xen's PV console. This option is
-only available when used together with `pv-in-pvh`.
+`pv` indicates that Xen should use Xen's PV console. This option requires
+Xen running as a Xen guest. and is only available if the hypervisor was
+compiled with `CONFIG_XEN_GUEST` enabled.
 
 `dbgp` or `ehci` indicates that Xen should use a USB2 debug port.
 
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.21