> From: Jan Beulich [mailto:jbeul...@suse.com]
> Sent: Monday, December 08, 2014 5:13 PM
>
> PVH guests accessing I/O ports via string ops is not supported yet.
>
> Reported-by: Roger Pau Monné<roger....@citrix.com>
> Signed-off-by: Jan Beulich <jbeul...@suse.com>
Acked-by: Kevin Tian <kevin.t...@intel.com>
> ---
> v2: handle_pio() is already safe (pointed out by Mukesh), so only refuse
> entering handle_mmio().
> Note: Only compile tested so far.
>
> --- unstable.orig/xen/arch/x86/hvm/vmx/vmx.c 2014-11-27
> 09:37:27.000000000 +0100
> +++ unstable/xen/arch/x86/hvm/vmx/vmx.c 2014-12-08
> 10:04:27.000000000 +0100
> @@ -3086,7 +3086,8 @@ void vmx_vmexit_handler(struct cpu_user_
> if ( exit_qualification & 0x10 )
> {
> /* INS, OUTS */
> - if ( !handle_mmio() )
> + if ( unlikely(is_pvh_vcpu(v)) /* PVH fixme */ ||
> + !handle_mmio() )
> hvm_inject_hw_exception(TRAP_gp_fault, 0);
> }
> else
>
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