Hi Gareth Handling big endian mode is an interesting topic. Frankly, In VTI side, we didn't handle big endian mode, and we knew this is an issue. I would like to look at this issue.
Did you run this application on domU or VTI-domain? Thanks Anthony >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Gareth >Knight >Sent: 2006?8?25? 7:58 >To: xen-ia64-devel@lists.xensource.com >Subject: [Xen-ia64-devel] unaligned access handler deadlock when a >userapplication runs in big endian mode ( psr.be is set ) > >All, > >Repost sans confidentiality notice ! > >I've got top of tree xen-ia64-unstable.hg running on my Tiger >system. I'm working on getting our (Transitive's) QuickTransit >dynamic binary translator working in a guest machine. QuickTransit >Sparc Solaris -> ia64 linux makes use of the big endian mode to speed >up its translation of Sparc applications. > >I've tried adding a "rum psr.be" in all the interrupt vectors near >the top and that certainly improves matters, but it also causes the >unaligned access handler to believe the user app is running in little >endian mode, which is not true. I've put together an example to >demonstrate the issue. The source is attached below. Basically the >example tries to do an unaligned access whilst in big endian mode, >which when running correctly currently produces a SIGBUS ( since the >Linux kernel currently has no big endian unaligned access >handling ). On the Xen kernel it currently deadlocks. > >Comments welcome, > >Gareth. _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@lists.xensource.com http://lists.xensource.com/xen-ia64-devel
