[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH]Fix the bug of guest os installationfailure and win2k boot failure
On 18/3/08 10:02, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote: >> In your last sentence, do you mean that we still >> need to do an entire I/O permission check (including CPL, IOPL, and TSS I/O >> bitmap) in x86_emulate() for safety consideration? Thanks! :-) > > Yes. Like I said: the CPL-IOPL check is very cheap, the TSS bitmap check is a > little more expensive but probably relatively rare. And in any case the I/O > port access latency is largely dominated by the VMEXIT/VMENTRY times. Also the > devices we emulate are mostly managed by mmio. I'll cook up a patch for this myself, by the way. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |