On Sun, Jul 15, 2018 at 09:22:16PM +0000, Andy Smith wrote:
On Sat, Jul 14, 2018 at 02:52:31PM +0000, Andy Smith
wrote:
It looks like the recent Debian stretch updated
kernel doesn't boot
under Xen:
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903767>
According to this bug report the kernel in jessie-backports has this
fixed:
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903821#36>
That should have read stretch-backports of course.
Another workaround, with the current stable (stretch) kernel, is to
boot with pti=off kernel command line parameter.
64-bit PV guests have their PTI protection in the hypervisor anyway,
so the KPTI stuff in the kernel is not being used. It is there where
this bug lies, and pti=off avoids it.
Cheers,
Andy
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