[Bug 207173] kvm compiling problem 5.6.x kvm_main.c:2236:42: error: ‘nr_pages_avail’ may be used uninitialized in this function

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=207173

--- Comment #5 from zoran.davidovac@gmail.com ---
I've back-ported kvm and instead loop changed to while as in 5.4 
and I could compile it.

But I found what the problem is. 

In short I can compile it with -O2 , -O2 -march=native, but NOT with -O3 with
or without -march=native.
Further more in kernel menuconfig optimization I see only O2 an Os(ize) now!?

How to reproduce:
-use my config
-edit Makefile and replace -O2 to -O3 and you will get this error.


I always compile stock kernel with -O3 -march=native for servers 
and my laptop with -Ofast -march=native for ages without any problem :)

On error .kvm_main.o.cmd is not generated, thank you Sean, 
you made me look to something that I would never suspect
as I had same compile problem on server, laptop and virtual server.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.