[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] x86-64 Xen development
> Sounds awesome! I'll be looking into supporting 32-bit apps. I am also > getting the current tool ready for x86-64 to be able to lauch 64-bit > domains. Great. > Supporting 32-bit apps (as well as 32bit domains) are going to require > an ioctl conversion layer as some syscall conversion stuff. Not 100% > sure yet on how things are going to be just yet. I'll figure something > out and get back to the list. Supporting 32bit domains on 64 bit Xen is going to be ugly (requiring shadow page tables), so I wouldn't count it as a priority. 32 bit user space is certainly very important. Ian > > On Thu, 2005-03-03 at 09:03 -0800, Nakajima, Jun wrote: > > Ian Pratt wrote: > > >> What is Intel's status on x86-64 work for Xen? Do require any > > >> assistance on any remaining work to get Xen x86-64 > enabled? We want > > >> to have more public discussion on x86-64 Xen development. > > > > > > Jun, > > > > > > Please can you post the x86_64 dom0 domain builder so > that Jerone can > > > get to work on the user space builder. > > > > > > Are there any fixes we need to do to x86_64 xen? Have you > an ETA on > > > the dom0 checkin? > > > > Ian, > > > > I'm shooting the next week, in a week or so. We've been > making steady > > progress despite _numerous_ minor issus/problems. Jerone, > it would be > > helpful if you take a look at 32-bit apps support (i.e. what does it > > take for us to support those in xenolinux64) because we are not > > proactively looking at the area at this point. > > > > There are a couple of minor fixes required in the hypervisor. For > > example, check_descriptor() in arch/x86/x86-64/mm.c needs > to shift bits > > when comparing the value. > > /* The guest can only safely be executed in ring 3. */ > > if ( ((b & _SEGMENT_DPL) >> 13) != 3) { > > goto bad; > > } > > I'll send patches this week. > > > > Jun > > > > > -- > Jerone Young > Open Virtualization > IBM Linux Technology Center > jyoung5@xxxxxxxxxx > 512-838-1157 (T/L: 678-1157) > > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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