[xen staging] docs: correct "gnttab=" documented default

[patchbot@xxxxxxx]

commit da5827fff31c401132879130398a974a18befacb
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Wed Mar 2 09:28:06 2022 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Mar 2 09:28:06 2022 +0100

    docs: correct "gnttab=" documented default
    
    Defaults differ for Arm and x86, not the least because of v2 not even
    being security supported on Arm.
    
    Also drop a bogus sentence from gnttab_max_maptrack_frames, which was
    presumably mistakenly cloned from gnttab_max_frames (albeit even there
    what is being said is neither very precise nor very useful imo).
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 docs/misc/xen-command-line.pandoc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/docs/misc/xen-command-line.pandoc 
b/docs/misc/xen-command-line.pandoc
index efda335652..eda92ce29e 100644
--- a/docs/misc/xen-command-line.pandoc
+++ b/docs/misc/xen-command-line.pandoc
@@ -1177,7 +1177,9 @@ Specify which console gdbstub should use. See **console**.
 ### gnttab
 > `= List of [ max-ver:<integer>, transitive=<bool>, transfer=<bool> ]`
 
-> Default: `gnttab=max-ver:2,transitive,transfer`
+> Default (Arm): `gnttab=max-ver:1`
+> Default (x86,PV): `gnttab=max-ver:2,transitive,transfer`
+> Default (x86,HVM): `gnttab=max-ver:2,transitive`
 
 Control various aspects of the grant table behaviour available to guests.
 
@@ -1217,8 +1219,6 @@ Specify the maximum number of frames to use as part of a 
domains
 maptrack array. This value is an upper boundary of the per-domain
 value settable via Xen tools.
 
-Dom0 is using this value for sizing its maptrack table.
-
 ### global-pages
     = <boolean>
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging