GMP 6.0.0a on AMD A8-6600K
kevin.m.buckley at gmail.com
Thu Apr 9 11:53:05 UTC 2015
On 9 April 2015 at 22:12, <tg at gmplib.org> wrote:
> I've lost track, did you try a GMP snapshot in a Xen guest?
Not in a domU, no.
When I saw that the Xen host (dom0) - itself a kind of "Xen guest"
as I think of it - was exhibiting the problems, I stopped.
My assumption there was that if Xen wasn't passing opcodes through
to the dom0, then it wasn't going to pass them through to any domU.
> Did you try Niels' suggested gdb commands on a failing system?
> Another way which might be easier is to re-configire with --disable-shared, then build,
> then do
> $ gdb some-problem-testcase
> (gdb) run
> [expect illop]
> (gdb) x/5i
> (gdb) bt
> This will show us the "illegal" instruction and the call chain which
> took us there.
> The goal of this exercise is to (1) properly understand the problem, and
> (2) to make sure we've fixed it.
Will certainly give that a go.
It'll probably be the weekend before I get to add more info into the mix
for you, though.
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