provide a stub version of kvm-all.c if !CONFIG_KVM

This allows limited use of kvm functions (which will return ENOSYS)
even in once-compiled modules.  The patch also improves a bit the error
messages for KVM initialization.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[blauwirbel@gmail.com: fixed Win32 build]
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/kvm-all.c b/kvm-all.c
index 065fd6a250..2ede4b9ea7 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1157,9 +1157,9 @@ int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset)
     return r;
 }
 
-#ifdef KVM_IOEVENTFD
 int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign)
 {
+#ifdef KVM_IOEVENTFD
     struct kvm_ioeventfd kick = {
         .datamatch = val,
         .addr = addr,
@@ -1176,5 +1176,7 @@ int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign)
     if (r < 0)
         return r;
     return 0;
-}
+#else
+    return -ENOSYS;
 #endif
+}