From 0abe905d29f556128c5fb2ea8d93e982e94aaa67 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 10 Nov 2011 15:38:42 +0400 Subject: vl.c: prohibit simultaneous use of -icount with kvm or xen 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 Acked-by: Paolo Bonzini Signed-off-by: Anthony Liguori --- vl.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/vl.c b/vl.c index 16fa222f1a..f5afed4c49 100644 --- a/vl.c +++ b/vl.c @@ -3231,6 +3231,11 @@ 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) { -- cgit v1.2.1