On Thu, Dec 14, 2017 at 02:50:17PM +0000, Paul Durrant wrote: >> -----Original Message----- >> > >> > Hmm. That looks like it is because the ioreq server pages are not owned by >> > the correct domain. The Xen patch series underwent some changes later in >> > review and I did not re-test my QEMU patch after that so I wonder if >> > mapping IOREQ pages has simply become broken. I'll investigate. >> > >> >> I have reproduced the problem locally now. Will try to figure out the bug >> tomorrow. >> > >Chao, > > Can you try my new branch > http://xenbits.xen.org/gitweb/?p=people/pauldu/xen.git;a=shortlog;h=refs/heads/ioreq24? > > The problem was indeed that the ioreq pages were owned by the emulating > domain rather than the target domain, which is no longer compatible with > privcmd's use of HYPERVISOR_mmu_update.
Of course. I tested this branch. It works well. But, I think your privcmd patch couldn't set 'err_ptr' to NULL when calling xen_remap_domain_mfn_array(). It works for the ioreq page is allocated right before the bufioreq page, and then they happen to be continuous. Thanks Chao _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
