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Tsirkin" , Gerd Hoffmann Subject: [PATCH v2 1/2] virtio-vga: fix virtio-vga bar ordering Date: Wed, 22 Apr 2020 23:54:54 +0200 Message-Id: <20200422215455.10244-1-anthoine.bourgeois@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::442; envelope-from=anthoine.bourgeois@gmail.com; helo=mail-wr1-x442.google.com X-detected-operating-system: by eggs.gnu.org: Error: [-] PROGRAM ABORT : Malformed IPv6 address (bad octet value). Location : parse_addr6(), p0f-client.c:67 X-Received-From: 2a00:1450:4864:20::442 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" With virtio-vga, pci bar are reordered. Bar #2 is used for compatibility with stdvga. By default, bar #2 is used by virtio modern io bar. This bar is the last one introduce in the virtio pci bar layout and it's crushed by the virtio-vga reordering. So virtio-vga and modern-pio-notify are incompatible because virtio-vga failed to initialize with this option. This fix sets the modern io bar to the bar #5 to avoid conflict. Signed-off-by: Anthoine Bourgeois --- hw/display/virtio-vga.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c index 2b4c2aa126..95757a6619 100644 --- a/hw/display/virtio-vga.c +++ b/hw/display/virtio-vga.c @@ -114,6 +114,7 @@ static void virtio_vga_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) */ vpci_dev->modern_mem_bar_idx = 2; vpci_dev->msix_bar_idx = 4; + vpci_dev->modern_io_bar_idx = 5; if (!(vpci_dev->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ)) { /* -- 2.20.1