Re: [Xen-devel] [PATCH] x86/amd: fix crash as Xen Dom0 on AMD Trinity systems

["H. Peter Anvin" <hpa@xxxxxxxxx>]

On 05/30/2012 07:23 AM, Jan Beulich wrote:
> 
> I see - the Xen code blindly overwrites pv_cpu_ops, despite not
> having initialized all members. That's an obvious oversight of the
> patch that introduced the _regs variants.
> 
> Plus having secondary instances of things like rdmsrl_amd_safe()
> in asm/paravirt.h seems pretty strange an approach (which was
> why initially I didn't spot how a crash could happen there) - only
> the lowest level functions should get re-implemented here.
> 

This kinds of things are part of why Xen makes me want to cry regularly.

        -hpa


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