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[Qemu-devel] [PATCH v4 17/17] vfio/pci: Handle host oversight
From: |
Eric Auger |
Subject: |
[Qemu-devel] [PATCH v4 17/17] vfio/pci: Handle host oversight |
Date: |
Mon, 3 Oct 2016 12:41:17 +0000 |
In case the end-user calls qemu with -vfio-pci option without passing
either sysfsdev or host property value, the device is interpreted as
0000:00:00.0. Let's create a specific error message to guide the end-user.
Signed-off-by: Eric Auger <address@hidden>
---
hw/vfio/pci.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index eb08d01..e339790 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2520,6 +2520,13 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
int i, ret;
if (!vdev->vbasedev.sysfsdev) {
+ if (!(~vdev->host.domain || ~vdev->host.bus ||
+ ~vdev->host.slot || ~vdev->host.function)) {
+ error_setg(errp, "No provided host device");
+ error_append_hint(errp, "Use -vfio-pci,host=DDDD:BB:DD.F "
+ "or -vfio-pci,sysfsdev=PATH_TO_DEVICE\n");
+ return;
+ }
vdev->vbasedev.sysfsdev =
g_strdup_printf("/sys/bus/pci/devices/%04x:%02x:%02x.%01x",
vdev->host.domain, vdev->host.bus,
@@ -2828,6 +2835,10 @@ static void vfio_instance_init(Object *obj)
device_add_bootindex_property(obj, &vdev->bootindex,
"bootindex", NULL,
&pci_dev->qdev, NULL);
+ vdev->host.domain = ~0U;
+ vdev->host.bus = ~0U;
+ vdev->host.slot = ~0U;
+ vdev->host.function = ~0U;
}
static Property vfio_pci_dev_properties[] = {
--
1.9.1
- Re: [Qemu-devel] [PATCH v4 15/17] vfio/pci: Remove vfio_msix_early_setup returned value, (continued)
[Qemu-devel] [PATCH v4 14/17] vfio/pci: Conversion to realize, Eric Auger, 2016/10/03
[Qemu-devel] [PATCH v4 16/17] vfio/pci: Remove vfio_populate_device returned value, Eric Auger, 2016/10/03
[Qemu-devel] [PATCH v4 13/17] vfio/platform: Pass an error object to vfio_base_device_init, Eric Auger, 2016/10/03
[Qemu-devel] [PATCH v4 17/17] vfio/pci: Handle host oversight,
Eric Auger <=
Re: [Qemu-devel] [PATCH v4 00/17] Convert VFIO-PCI to realize, Markus Armbruster, 2016/10/04