[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 3/3] [GSOC14] FIX:- Race condition between initializing shared ring and mempaging.
On Mon, Jul 21, 2014 at 5:01 AM, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
It's deja vu all over again! Note that the XSA commmit, 6ae2df93c27, does exactly that. Enable paging/access/sharing, and only after that decrease reservation (and after that unpause). So the window is open ... methinks? At some point the assertion "xen side ... not robust" has to be declared false, because it's either FUD, or untenable to ship a hypervisor that can be crashed by guest input. You fixed an important bug with the vcpu run off, so I'll refrain from saying "I don't see any problems there". But I think I don't see any problems there ....
Likely not a problem, you are referring to pause count? Looks like different things. Thanks Andres
_______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |