>
>
>I've updated this patch and switched to using a scale/shift
>like Xen is
>doing, but I must admit, I don't understand how it helps adjtime. I
>poked around a bit and it wasn't obvious.
I think the reason is that Xen can't use FP to avoid FP save/restore
at VM Exit time, while PV guest can use FP if want.
No matter scale/shift or FP, hypervisor need to guarantee the time
is accurate enough for years and no overflow. A server may
run for couple years:-)
>
>Why is having {mult=1<<22, shift=22} better for adjtime than {mult=1,
>shift=0}?
>
To avoid overflow after long run. (at least Xen/IA64 is for that
purpose).
thx,eddie
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
kvm-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/kvm-devel
