Messages in this thread | | | From | Linus Torvalds <> | Date | Mon, 19 Feb 2018 16:43:50 -0800 | Subject | Re: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs |
| |
On Mon, Feb 19, 2018 at 4:13 PM, Alan Cox <gnomes@lxorguk.ukuu.org.uk> wrote: > > In theory there's nothing stopping a guest getting a 'you are about to > gain/lose IBRS' message or having a new 'CPU' hotplugged and the old one > removed.
I'm not convinced we handle the case of hotplug CPU's with different CPU models correctly.
In fact, I'd be very surprised it it worked in the general case.
Linus
| |