At 10/24/2011 11:30 PM, Avi Kivity Write: > On 10/24/2011 05:25 PM, Dave Anderson wrote: >> >> ----- Original Message ----- >>> On 10/24/2011 04:25 PM, Dave Anderson wrote: >>>>> The question is that: 'virsh dump' can not be used when host pci device >>>>> is used by guest. We are discussing how to fix the problem. We have >>>>> determined >>>>> that introduce a new monitor command dump. Jan suggested that the core >>>>> file's >>>>> format is gdb standard core format. Does crash support such format? If >>>>> no, >>>>> is it possible to support such format? >>>> >>>> If you are talking about an ELF core dump of the user-space qemu-kvm >>>> process >>>> running on the host, then it's certainly not supported. >>> >>> No, an ELF image of the guest's physical memory. >> >> Well then that should be pretty straight forward to support. Depending upon >> how similar it would be to the "standard" kdump ELF format, the only other >> issue is how to determine the physical base address at which the kernel is >> loaded, in order to be able to translate the mapped kernel-text/static-data >> virtual region of the x86_64 arch (the __START_KERNEL_map region). >> > > I guess an elf note would work for that?
Hi, Avi Kivity, Dave Anderson I have two questions about it: 1. How to know the guest's physical base address in qemu? 2. Does kdump format(not ELF) include such information in its head? Thanks Wen Congyang