Comment # 4 on bug 1179538 from Borislav Petkov

Kernel 5.10 on the host and guest works fine:

+ gdb -batch a.out -ex start -ex 'p /x $mxcsr = 0x9f80' -ex 'p /x $mxcsr' -ex
stepi -ex 'p /x $mxcsr'
Temporary breakpoint 1 at 0x401001: file amd64-init-x87-values.S, line 27.

Temporary breakpoint 1, main () at amd64-init-x87-values.S:27
27              nop
$1 = 0x9f80
$2 = 0x9f80
28              fwait
$3 = 0x9f80

I *think* this will trigger with the OBS host kernel. Considering how the
upstream reporter stopped seeing this after a while, this looks like it "got
fixed" in kvm/qemu recently. Just how it looks from here though - I have no
hard evidence yet.

Thx.