On Mon, 05 Mar 2012 17:12:00 +0800 Wen Congyang <we...@cn.fujitsu.com> wrote:
> At 03/02/2012 05:59 PM, Wen Congyang Wrote: > > Hi, all > > > > 'virsh dump' can not work when host pci device is used by guest. We have > > discussed this issue here: > > http://lists.nongnu.org/archive/html/qemu-devel/2011-10/msg00736.html > > > > The last version is here: > > http://lists.nongnu.org/archive/html/qemu-devel/2012-02/msg04228.html > > > > We have determined to introduce a new command dump to dump memory. The core > > file's format can be elf. > > > > Note: > > 1. The guest should be x86 or x86_64. The other arch is not supported now. > > 2. If you use old gdb, gdb may crash. I use gdb-7.3.1, and it does not > > crash. > > 3. If the OS is in the second kernel, gdb may not work well, and crash can > > work by specifying '--machdep phys_addr=xxx' in the command line. The > > reason is that the second kernel will update the page table, and we can > > not get the page table for the first kernel. > > 4. The cpu's state is stored in QEMU note. You neet to modify crash to use > > it to calculate phys_base. > > 5. If the guest OS is 32 bit and the memory size is larger than 4G, the > > vmcore > > is elf64 format. You should use the gdb which is built with > > --enable-64-bit-bfd. > > 6. This patchset is based on the upstream tree, and apply one patch that is > > still > > in Luiz Capitulino's tree, because I use the API qemu_get_fd() in this > > patchset. > > > > Hi, Jan, Luiz Capitulino > Do you have any comments? I haven't had a chance to review it yet, will do in the next few days.
