>>> On 04.08.16 at 11:24, <andrew.coop...@citrix.com> wrote:
> On 04/08/16 08:13, Jan Beulich wrote:
>>>>> On 03.08.16 at 22:44, <andrew.coop...@citrix.com> wrote:
>>> --- a/xen/arch/x86/hvm/hvm.c
>>> +++ b/xen/arch/x86/hvm/hvm.c
>>> @@ -5194,8 +5194,14 @@ int hvm_do_hypercall(struct cpu_user_regs *regs)
>>> switch ( mode )
>>> {
>>> case 8:
>>> + if ( eax == __HYPERVISOR_hvm_op &&
>>> + regs->rdi == HVMOP_guest_request_vm_event )
>>> + break;
>>> case 4:
>>> case 2:
>>> + if ( eax == __HYPERVISOR_hvm_op &&
>>> + regs->ebx == HVMOP_guest_request_vm_event )
>> I think you really mean _ebx here.
>
> True, but it is very hard in 32 or 16bit code to have upper bits set in
> the 64bit register.
But it's not impossible.
Jan
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
