From: Olaf Hering <redacted> Sent: Friday, September 23, 2022 2:09 PM

Fri, 23 Sep 2022 19:42:59 +0800 Li kunyu [off-list ref]:

quoted

+++ b/include/asm-generic/mshyperv.h
+#include <linux/version.h>

A very long time ago I removed most usage of version.h AFAIR,
so that changing uname -r will dirty just a tiny amount of objects.

But, this header is always coming back, like bad weed.

Please reconsider the suggested approach.

Could you elaborate?  This code is getting the Linux kernel version
to pass to the hypervisor for later diagnostic purposes.  In a large
cloud environment like Azure, it's helpful sometimes to be able to
correlate emerging fleet-wide issues to particular kernel versions.
The Hyper-V code in Linux has been using LINUX_VERSION_CODE
this way for the past 10 years, so this isn't new.

Is there a more preferred mechanism for kernel code to get its version? 

Michael

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