From: Gonglei <[email protected]> when configure a invalid vram size for cirrus card, such as less 2 MB, which will crash qemu. Follow the real hardware, the cirrus card has 4 MB video memory. Also for backward compatibility, accept 8 MB and 16 MB vram size.
Signed-off-by: Gonglei <[email protected]> --- v2: fix checkpatch fails. "WARNING: suspect code indent for conditional statements (5, 9)" maybe not a real warning. hw/display/cirrus_vga.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c index d1afc76..399a2ef 100644 --- a/hw/display/cirrus_vga.c +++ b/hw/display/cirrus_vga.c @@ -2959,6 +2959,14 @@ static int pci_cirrus_vga_initfn(PCIDevice *dev) PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); int16_t device_id = pc->device_id; + /* follow real hardware, cirrus card emulated has 4 MB video memory. + Also accept 8 MB/16 MB for backward compatibility. */ + if (s->vga.vram_size_mb != 4 || s->vga.vram_size_mb != 8 || + s->vga.vram_size_mb != 16) { + error_report("Invalid cirrus_vga ram size '%u'\n", + s->vga.vram_size_mb); + return -1; + } /* setup VGA */ vga_common_init(&s->vga, OBJECT(dev), true); cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev), -- 1.7.12.4
