[PATCH v2] hw/riscv: virt: Warn the user if -bios is provided when using KVM

[Ralf Ramsauer]

The -bios option is silently ignored if used in combination with -enable-kvm.
The reason is that the machine starts in S-Mode, and the bios typically runs in
M-Mode.

Warn the user that the bios won't be loaded.

Signed-off-by: Ralf Ramsauer <ralf.ramsauer@oth-regensburg.de>
---
 hw/riscv/virt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index da50cbed43..0c477addbc 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -1312,6 +1312,10 @@ static void virt_machine_init(MachineState *machine)
      * when KVM is enabled.
      */
     if (kvm_enabled()) {
+        if (machine->firmware && strcmp(machine->firmware, "none")) {
+            warn_report("Machine mode firmware is not supported in combination 
"
+                        "with KVM. Ignoring -bios.");
+        }
         g_free(machine->firmware);
         machine->firmware = g_strdup("none");
     }
-- 
2.35.1