Re: [Xen-users] Xen 4.1.2 HT disaware (?)

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2013-04-25 at 09:16 +0100, Vadim A. Misbakh-Soloviov wrote:
> > There is supposed to be some way to ask the hypervisor to set the RTC
> > time, but I'm afraid I don't recall how it fits together on a pvops
> > kernel. I know that on a classic Xen kernel if you ran ntpd (or
> > ntpdate?) it would get pushed down, but I don't think pvops kernels do
> > that.
> > 
> > Sorry, that's all I can remember.
> 
> Fortunatelly, all issues was fixed by booting Xen directly from EFI and
> passing
> acpi_rsdp (with Xen-reported value) to the dom0 kernel ;)
> 
> So, the only things I still discouraged is:
> 1) "xl shutdown -a" segfaults with SELinux enabled (even in permissive
> mode). While stopping each domU separately is okay.

Only with selinux enabled? How odd. Please can you report (in a separate
thread) with logs and a gdb backtrace. Since it is a segfault I think
you may as well go straight to xen-devel with the report.

> 2) efibootmgr doesn't work under Xen (which is common bug [1] too, but
> it seems, nobody wants to fix this thing in Xen.

Nobody "wants to" is a bit strong, although it is true that nobody
*has*. Patches which improve Xen under EFI (either directly booting or
via a boot manager) would be greatly appreciated.

> So, it is impossible to change path to Xen on EFI partition without
> booting to baremetal kernel (<3.8, btw, since =3.8 has issue preventing
> write to EFI table [2])
> 
> [1] http://lists.xen.org/archives/html/xen-devel/2012-05/msg02060.html
> [2] http://thread.gmane.org/gmane.linux.kernel.efi/1081
> 



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