On Tue, 11 Apr 2017 19:20:08 +0200 Daniel Kiper <[email protected]> wrote:
> On Tue, Apr 11, 2017 at 04:59:16PM +0200, Petr Tesarik wrote: >[...] > > Tested-by: Petr Tesarik <[email protected]> > > > > I copied the complete /proc/vmcore to a directory on disk. Exactly > > as expected, crash works both without the patch and with the patch, as > > it does not use VMCOREINFO at all (instead, crash obtains the > > information from kernel debuginfo directly). > > Thanks for doing the tests. I suppose that you have tested HVM guests. Not really. I crashed Dom0, which is in turn sent to the hypervisor, so the result is a complete host dump, including Xen hypervisor data and all domains. > IIRC, PV guests are not supported by crash right now due to p2m VMA > mapping. At least it was an issue some time ago. Is it still valid? Yes, this is correct. I tested this behaviour a few weeks ago. > Anyway, one guy in Oracle works on fix for that issue and I do review. > We are going to post it in 2-3 weeks. All right. FYI I do not plan to put much effort into it, as my focus has shifted towards libkdumpfile (https://github.com/ptesarik/libkdumpfile), and this library can open PV guest dump files without any issues. Petr T
