Re: [Xen-devel] ARM: Adjusting guest memory size through xl mem-{set|max} fails

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Jul 17, 2017 at 06:19:09PM +0200, Sergej Proskurin wrote:
> Hi Julien,
> 
> 
> On 07/17/2017 03:53 PM, Julien Grall wrote:
> > (+Wei and Ian)
> >
> > Hi Sergej
> >
> > On 17/07/17 13:04, Sergej Proskurin wrote:
> >> Hi all,
> >>
> >> My setup comprises an ARMv7 (Arndale, Linux kernel v4.11.6) and an ARMv8
> >> (LeMaker HiKey, Linux kernel v4.9.0) development board. On both boards,
> >> I have Xen version 4.10-unstable running with the associated tools to
> >> manage a domu.
> >>
> >> Currently, I am trying to get xl mem-{set|max} to work on both
> >> architectures. Unfortunately, both command invocations fail with the
> >> following message (I remember using xl mem-{set|max} on ARMv7 before
> >> with Xen version 4.7 and 4.8):
> >>
> >> ---
> >> xl: libxl.c:339: libxl_defbool_val: Assertion
> >> `!libxl_defbool_is_default(db)' failed.
> >> Aborted
> >> ---
> >
> > I haven't myself tried to use xl mem-{set|max}. Looking at the assert,
> > you hit because a boolean is not initialized. It would be interesting
> > to know which one.
> >
> > I have CCed the tools maintainers to get more feedback.
> >

Can you provide a backtrace?

$ ulimit -c unlimited
$ xl mem-set

That should generate a coredump, on which you can use gdb to get a
backtrace.

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