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 <jcmvb...@gmail.com>
Acked-by: Paolo Bonzini <pbonz...@redhat.com>
---
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) {
--
1.7.2.5
