Re: [Crash-utility] [PATCH] xen: Add support for dom0 with Linux kernel 3.19 and newer

Linux kernel commit 054954eb051f35e74b75a566a96fe756015352c8 (xen: switch to linear virtual mapped sparse p2m list), which appeared in 3.19, introduced linear virtual mapped sparse p2m list. If readmem() reads p2m then it access this list using physical addresses. Sadly, VMA to physical address translation in crash requires access to p2m list. This means that we have a chicken and egg problem. In general this issue must be solved by introducing some changes in libxl, Linux kernel and crash (I have added this task to my long TODO list). However, in dom0 case we can use crash_xen_info_t.dom0_pfn_to_mfn_frame_list_list which is available out of the box. So, let's use it and make at least some users happy. Signed-off-by: Daniel Kiper <daniel.kiper(a)oracle.com&gt;