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Re: [PATCH] xen/public: increment domctl interface version
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Mon, 14 Oct 2024 10:00:57 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 14 Oct 2024 08:01:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 14.10.24 09:46, Jan Beulich wrote:
On 14.10.2024 09:36, Jürgen Groß wrote:
On 14.10.24 09:14, Jan Beulich wrote:
On 14.10.2024 09:06, Juergen Gross wrote:
The recent addition of the XEN_DOMCTL_dt_overlay function was missing
the related update of XEN_DOMCTL_INTERFACE_VERSION, as it has been the
first interface change of the 4.20 release cycle.
Fixes: 4c733873b5c2 ("xen/arm: Add XEN_DOMCTL_dt_overlay and device attachment to
domains")
I'm confused: That change (a) pre-dates the branching of 4.20 and (b)
bumped the version ...
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -21,7 +21,7 @@
#include "hvm/save.h"
#include "memory.h"
-#define XEN_DOMCTL_INTERFACE_VERSION 0x00000017
+#define XEN_DOMCTL_INTERFACE_VERSION 0x00000018
... from 0x16 to 0x17. And for no apparent reason, as plain additions don't
require a bump. Did you maybe mean to reference a different commit?
Oh, indeed. I wanted to reference d6e9a2aab39e.
And regarding to "plain additions don't require a bump": 4c733873b5c2 did
a plain addition and bumped the version.
Right, hence why I said "for no apparent reason".
There seems to be a lack of documentation in this regard.
Julien explicitly asked for the bump for that addition.
I'm fine with dropping my patch if others agree that the bump isn't needed.
In that case I'll send another one adding a comment for the mechanics of
interface version bump in domctl.h and sysctl.h.
Juergen
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