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vl.c: prohibit simultaneous use of -icount with kvm or xen

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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>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Max Filippov 2011-11-10 15:38:42 +04:00 committed by Anthony Liguori
parent ee71c98434
commit 0abe905d29
1 changed files with 5 additions and 0 deletions
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5
vl.c
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@ -3231,6 +3231,11 @@ int main(int argc, char **argv, char **envp)
fprintf(stderr, "could not initialize alarm timer\n"); fprintf(stderr, "could not initialize alarm timer\n");
exit(1); 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); configure_icount(icount_option);
if (net_init_clients() < 0) { if (net_init_clients() < 0) {