[Xen-changelog] [xen staging] x86/save: reserve HVM save record numbers that have been consumed...

[patchbot@xxxxxxx]

commit 6e99520bf47f9de2dc59b9fbbc5f932fca3a8086
Author:     Paul Durrant <pdurrant@xxxxxxxxxx>
AuthorDate: Fri Jan 3 17:06:03 2020 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Jan 3 17:06:03 2020 +0100

    x86/save: reserve HVM save record numbers that have been consumed...
    
    ...for patches not (yet) upstream.
    
    This patch is simply adding a comment to reserve save record number space
    to avoid the risk of clashes between existent downstream changes made by
    Amazon and future upstream changes which may be incompatible.
    
    Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
    Reviewed-by: Wei Liu <wl@xxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/include/public/arch-x86/hvm/save.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/include/public/arch-x86/hvm/save.h 
b/xen/include/public/arch-x86/hvm/save.h
index b2ad3fcd74..468c28dedb 100644
--- a/xen/include/public/arch-x86/hvm/save.h
+++ b/xen/include/public/arch-x86/hvm/save.h
@@ -639,6 +639,8 @@ struct hvm_msr {
 
 #define CPU_MSR_CODE  20
 
+/* Range 22 - 34 (inclusive) reserved for Amazon */
+
 /*
  * Largest type-code in use
  */
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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