On Mon, Jan 07, 2013 at 09:48:20AM +0000, Jan Beulich wrote: > >>> On 04.01.13 at 18:25, Daniel Kiper <daniel.kiper at oracle.com> wrote: > > Right, so where is virtual mapping of control page established? > > I could not find relevant code in SLES kernel which does that. > > In the hypervisor (xen/arch/x86/machine_kexec.c:machine_kexec_load()). > xen/arch/x86/machine_kexec.c:machine_kexec() then simply uses > image->page_list[1]. This (xen/arch/x86/machine_kexec.c:machine_kexec_load()) maps relevant page (allocated earlier by dom0) in hypervisor fixmap area. However, it does not make relevant mapping in transition page table which leads to crash when %cr3 is switched from Xen page table to transition page table. Daniel
