vl: configure accelerators from -accel options

Drop the "accel" property from MachineState, and instead desugar
"-machine accel=" to a list of "-accel" options.

This has a semantic change due to removing merge_lists from -accel.
For example:

- "-accel kvm -accel tcg" all but ignored "-accel kvm".  This is a bugfix.

- "-accel kvm -accel thread=single" ignored "thread=single", since it
  applied the option to KVM.  Now it fails due to not specifying the
  accelerator on "-accel thread=single".

- "-accel tcg -accel thread=single" chose single-threaded TCG, while now
  it will fail due to not specifying the accelerator on "-accel
  thread=single".

Also, "-machine accel" and "-accel" become incompatible.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/prom-env-test.c b/tests/prom-env-test.c
index 61bc1d1e7b..9be52c766f 100644
--- a/tests/prom-env-test.c
+++ b/tests/prom-env-test.c
@@ -57,7 +57,7 @@ static void test_machine(const void *machine)
             " -machine cap-cfpc=broken,cap-sbbc=broken,cap-ibs=broken";
     }
 
-    qts = qtest_initf("-M %s,accel=tcg %s -prom-env 'use-nvramrc?=true' "
+    qts = qtest_initf("-M %s -accel tcg %s -prom-env 'use-nvramrc?=true' "
                       "-prom-env 'nvramrc=%x %x l!' ", (const char *)machine,
                       extra_args, MAGIC, ADDRESS);
     check_guest_memory(qts);