95bef686e4
If the PCI BAR isn't yet mapped or was unmapped, QXL_IO_SET_MODE will assert(). Instead, report a guest bug and keep going. This can be reproduced with: cat << EOF | ./qemu-system-x86_64 -vga qxl -m 2048 -nodefaults -qtest stdio outl 0xcf8 0x8000101c outl 0xcfc 0xc000 outl 0xcf8 0x80001001 outl 0xcfc 0x01000000 outl 0xc006 0x00 EOF Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1829 Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Cc: qemu-stable@nongnu.org Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>