* [Xen-devel] [PATCH v3] x86/save: reserve HVM save record numbers that have been consumed...
@ 2019-12-19 17:38 Paul Durrant
2019-12-20 10:43 ` Jan Beulich
0 siblings, 1 reply; 2+ messages in thread
From: Paul Durrant @ 2019-12-19 17:38 UTC (permalink / raw)
To: xen-devel
Cc: Andrew Cooper, Paul Durrant, Jan Beulich, Wei Liu,
Roger Pau Monné
...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@amazon.com>
Reviewed-by: Wei Liu <wl@xen.org>
---
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>
v3:
- Reduced range and clarified inclusivity
v2:
- Reduce patch to just a comment
---
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
*/
--
2.20.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [Xen-devel] [PATCH v3] x86/save: reserve HVM save record numbers that have been consumed...
2019-12-19 17:38 [Xen-devel] [PATCH v3] x86/save: reserve HVM save record numbers that have been consumed Paul Durrant
@ 2019-12-20 10:43 ` Jan Beulich
0 siblings, 0 replies; 2+ messages in thread
From: Jan Beulich @ 2019-12-20 10:43 UTC (permalink / raw)
To: Paul Durrant; +Cc: xen-devel, Roger Pau Monné, Wei Liu, Andrew Cooper
On 19.12.2019 18:38, Paul Durrant wrote:
> ...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@amazon.com>
> Reviewed-by: Wei Liu <wl@xen.org>
Acked-by: Jan Beulich <jbeulich@suse.com>
(albeit somewhat reluctantly)
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Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
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