Re: [Qemu-devel] [PATCH 1/4] Replace '-machine accel=xyz' with '-accel xyz'

[Thomas Huth <thuth@redhat.com>]

On 13.06.2018 14:48, Paolo Bonzini wrote:
> On 13/06/2018 07:05, Thomas Huth wrote:
>> diff --git a/tests/vmgenid-test.c b/tests/vmgenid-test.c
>> index 8d915c6..4324034 100644
>> --- a/tests/vmgenid-test.c
>> +++ b/tests/vmgenid-test.c
>> @@ -131,7 +131,7 @@ static void read_guid_from_monitor(QemuUUID *guid)
>>  static char disk[] = "tests/vmgenid-test-disk-XXXXXX";
>>  
>>  #define GUID_CMD(guid)                          \
>> -    "-machine accel=kvm:tcg "                   \
>> +    "-accel kvm:tcg "                           \
>>      "-device vmgenid,id=testvgid,guid=%s "      \
> 
> "-accel kvm:tcg" works, but it really shouldn't (and I think we can
> change it without a deprecation period).   The right syntax would be
> "-accel kvm -accel tcg", so that you can specify options that are valid
> only for KVM, or onlty for TCG.

I see your point, but this would break these qtests that are trying to
override the "-machine accel=qtest" from libqtest.c this way... and if
any other tool out there in the wild is already depending on this
behavior, too, we can not change it so easily anymore.

 Thomas