Re: [Qemu-devel] [PATCH v2] vl.c: prohibit simultaneous use of -icount with kvm or xen

["Andreas Färber" <afaerber@suse.de>]

Am 11.11.2011 20:45, schrieb Anthony Liguori:
> On 11/10/2011 05:38 AM, Max Filippov wrote:
>> With -icount, The vm_clock is updated with help from TCG (it counts
>> instructions at 2^ICOUNT ns/instructions). With KVM, the instruction
>> count is not available so KVM cannot provide this help.
>>
>> Signed-off-by: Max Filippov<jcmvbkbc@gmail.com>
>> Acked-by: Paolo Bonzini<pbonzini@redhat.com>
> 
> Applied.  Thanks.

Applied to stable-0.15. Thanks,

Andreas

> Regards,
> 
> Anthony Liguori
> 
>> ---
>> v1 ->  v2 changes:
>> - cover both kvm and xen;
>> - add explanation text.
>> ---
>>   vl.c |    5 +++++
>>   1 files changed, 5 insertions(+), 0 deletions(-)
>>
>> diff --git a/vl.c b/vl.c
>> index f169aac..bb601e2 100644
>> --- a/vl.c
>> +++ b/vl.c
>> @@ -3226,6 +3226,11 @@ int main(int argc, char **argv, char **envp)
>>           fprintf(stderr, "could not initialize alarm timer\n");
>>           exit(1);
>>       }
>> +
>> +    if (icount_option&&  (kvm_enabled() || xen_enabled())) {
>> +        fprintf(stderr, "-icount is not allowed with kvm or xen\n");
>> +        exit(1);
>> +    }
>>       configure_icount(icount_option);
>>
>>       if (net_init_clients()<  0) {

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