You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
3.8 KiB
105 lines
3.8 KiB
1 year ago
|
From 3022cc31bca5a5441e285c971eaf72b7643b9be0 Mon Sep 17 00:00:00 2001
|
||
|
|
From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
|
||
|
|
Date: Wed, 12 Jul 2023 17:46:56 +0200
|
||
|
|
Subject: [PATCH 03/37] vfio/pci: add support for VF token
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=UTF-8
|
||
|
|
Content-Transfer-Encoding: 8bit
|
||
|
|
|
||
|
|
RH-Author: Cédric Le Goater <clg@redhat.com>
|
||
|
|
RH-MergeRequest: 179: vfio: live migration support
|
||
|
|
RH-Bugzilla: 2192818
|
||
|
|
RH-Acked-by: Eric Auger <eric.auger@redhat.com>
|
||
|
|
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
|
||
|
|
RH-Commit: [1/28] ff24284ede2806e21f4f6709d8abd4c4029b7d5c (clegoate/qemu-kvm-c9s)
|
||
|
|
|
||
|
|
Bugzilla: https://bugzilla.redhat.com/2192818
|
||
|
|
|
||
|
|
commit 2dca1b37a760
|
||
|
|
Author: Minwoo Im <minwoo.im@samsung.com>
|
||
|
|
Date: Mon Mar 20 16:35:22 2023 +0900
|
||
|
|
|
||
|
|
vfio/pci: add support for VF token
|
||
|
|
|
||
|
|
VF token was introduced [1] to kernel vfio-pci along with SR-IOV
|
||
|
|
support [2]. This patch adds support VF token among PF and VF(s). To
|
||
|
|
passthu PCIe VF to a VM, kernel >= v5.7 needs this.
|
||
|
|
|
||
|
|
It can be configured with UUID like:
|
||
|
|
|
||
|
|
-device vfio-pci,host=DDDD:BB:DD:F,vf-token=<uuid>,...
|
||
|
|
|
||
|
|
[1] https://lore.kernel.org/linux-pci/158396393244.5601.10297430724964025753.stgit@gimli.home/
|
||
|
|
[2] https://lore.kernel.org/linux-pci/158396044753.5601.14804870681174789709.stgit@gimli.home/
|
||
|
|
|
||
|
|
Cc: Alex Williamson <alex.williamson@redhat.com>
|
||
|
|
Signed-off-by: Minwoo Im <minwoo.im@samsung.com>
|
||
|
|
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
|
||
|
|
Link: https://lore.kernel.org/r/20230320073522epcms2p48f682ecdb73e0ae1a4850ad0712fd780@epcms2p4
|
||
|
|
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
|
||
|
|
|
||
|
|
Conflicts:
|
||
|
|
- hw/vfio/pci.c
|
||
|
|
context changes in vfio_realize () due to redhat commit 267071d16b23
|
||
|
|
("vfio: cap number of devices that can be assigned")
|
||
|
|
|
||
|
|
Signed-off-by: Cédric Le Goater <clg@redhat.com>
|
||
|
|
---
|
||
|
|
hw/vfio/pci.c | 13 ++++++++++++-
|
||
|
|
hw/vfio/pci.h | 1 +
|
||
|
|
2 files changed, 13 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
|
||
|
|
index a779053be3..579b92a6ed 100644
|
||
|
|
--- a/hw/vfio/pci.c
|
||
|
|
+++ b/hw/vfio/pci.c
|
||
|
|
@@ -2859,6 +2859,8 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
|
||
|
|
int groupid;
|
||
|
|
int ret, i = 0;
|
||
|
|
bool is_mdev;
|
||
|
|
+ char uuid[UUID_FMT_LEN];
|
||
|
|
+ char *name;
|
||
|
|
|
||
|
|
if (device_limit && device_limit != vdev->assigned_device_limit) {
|
||
|
|
error_setg(errp, "Assigned device limit has been redefined. "
|
||
|
|
@@ -2960,7 +2962,15 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
- ret = vfio_get_device(group, vbasedev->name, vbasedev, errp);
|
||
|
|
+ if (!qemu_uuid_is_null(&vdev->vf_token)) {
|
||
|
|
+ qemu_uuid_unparse(&vdev->vf_token, uuid);
|
||
|
|
+ name = g_strdup_printf("%s vf_token=%s", vbasedev->name, uuid);
|
||
|
|
+ } else {
|
||
|
|
+ name = vbasedev->name;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ ret = vfio_get_device(group, name, vbasedev, errp);
|
||
|
|
+ g_free(name);
|
||
|
|
if (ret) {
|
||
|
|
vfio_put_group(group);
|
||
|
|
goto error;
|
||
|
|
@@ -3292,6 +3302,7 @@ static void vfio_instance_init(Object *obj)
|
||
|
|
|
||
|
|
static Property vfio_pci_dev_properties[] = {
|
||
|
|
DEFINE_PROP_PCI_HOST_DEVADDR("host", VFIOPCIDevice, host),
|
||
|
|
+ DEFINE_PROP_UUID_NODEFAULT("vf-token", VFIOPCIDevice, vf_token),
|
||
|
|
DEFINE_PROP_STRING("sysfsdev", VFIOPCIDevice, vbasedev.sysfsdev),
|
||
|
|
DEFINE_PROP_ON_OFF_AUTO("x-pre-copy-dirty-page-tracking", VFIOPCIDevice,
|
||
|
|
vbasedev.pre_copy_dirty_page_tracking,
|
||
|
|
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
|
||
|
|
index 45235d38ba..10530743ad 100644
|
||
|
|
--- a/hw/vfio/pci.h
|
||
|
|
+++ b/hw/vfio/pci.h
|
||
|
|
@@ -137,6 +137,7 @@ struct VFIOPCIDevice {
|
||
|
|
VFIOVGA *vga; /* 0xa0000, 0x3b0, 0x3c0 */
|
||
|
|
void *igd_opregion;
|
||
|
|
PCIHostDeviceAddress host;
|
||
|
|
+ QemuUUID vf_token;
|
||
|
|
EventNotifier err_notifier;
|
||
|
|
EventNotifier req_notifier;
|
||
|
|
int (*resetfn)(struct VFIOPCIDevice *);
|
||
|
|
--
|
||
|
|
2.39.3
|
||
|
|
|