On 6/18/2026 11:38 AM, Cédric Le Goater wrote:
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diff --git a/hw/core/machine.c b/hw/core/machine.c
index 4d8b15d99e..8219f13779 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -43,6 +43,7 @@ GlobalProperty hw_compat_11_0[] = {
       { "chardev-vc", "encoding", "cp437" },
       { "tpm-crb", "cap-chunk", "off" },
       { "tpm-crb", "x-allow-chunk-migration", "off" },
+    { "migration", "switchover-ack-legacy", "on" },
   };
This line needs to be moved to the last patch, or people will get very confused on last patch flipping default without caring about old behavior..
This patch Implements the compatibility flows for legacy switchover-ack which use this property, so moving this line to last patch sounds even more
confusing IMHO.
My comment only applies to this one line to change hw_compat_11_0[], not the property itself.  It won't affect this patch.  It's common pattern to
do this in one patch to "update default value, but let's keep the old
machines unaffected".

Btw, since this value still has a default value ON in this patch, moving this line to the last patch won't change anything except making last patch
clearer.

Alright, I'll move it to last patch.

Cedric, would you like me to send v4 for this?

Yes please.

I think this series is ready for merge. So I have asked our QE
to test it a bit. Should be done next week. Once done, I will
send a vfio MR.

Thanks, Cedric. I will send v4 shortly.


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