|
 |
586cba |
From 3a5d325fcb2958318262efac31d5fd25fb062523 Mon Sep 17 00:00:00 2001
|
|
|
586cba |
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
|
|
|
586cba |
Date: Thu, 21 Jul 2022 15:38:55 +0200
|
|
|
586cba |
Subject: [PATCH 21/32] vdpa: Export vhost_vdpa_dma_map and unmap calls
|
|
|
586cba |
MIME-Version: 1.0
|
|
|
586cba |
Content-Type: text/plain; charset=UTF-8
|
|
|
586cba |
Content-Transfer-Encoding: 8bit
|
|
|
586cba |
|
|
|
586cba |
RH-Author: Eugenio Pérez <eperezma@redhat.com>
|
|
|
586cba |
RH-MergeRequest: 108: Net Control Virtqueue shadow Support
|
|
|
586cba |
RH-Commit: [21/27] 97e7a583bbd3c12a0786d53132812ec41702c190 (eperezmartin/qemu-kvm)
|
|
|
586cba |
RH-Bugzilla: 1939363
|
|
|
586cba |
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
|
|
|
586cba |
RH-Acked-by: Cindy Lu <lulu@redhat.com>
|
|
|
586cba |
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
|
|
|
586cba |
|
|
|
586cba |
Bugzilla: https://bugzilla.redhat.com/1939363
|
|
|
586cba |
|
|
|
586cba |
Upstream Status: git://git.qemu.org/qemu.git
|
|
|
586cba |
|
|
|
586cba |
commit 463ba1e3b8cf080812895c5f26d95d8d7db2e692
|
|
|
586cba |
Author: Eugenio Pérez <eperezma@redhat.com>
|
|
|
586cba |
Date: Wed Jul 20 08:59:40 2022 +0200
|
|
|
586cba |
|
|
|
586cba |
vdpa: Export vhost_vdpa_dma_map and unmap calls
|
|
|
586cba |
|
|
|
586cba |
Shadow CVQ will copy buffers on qemu VA, so we avoid TOCTOU attacks from
|
|
|
586cba |
the guest that could set a different state in qemu device model and vdpa
|
|
|
586cba |
device.
|
|
|
586cba |
|
|
|
586cba |
To do so, it needs to be able to map these new buffers to the device.
|
|
|
586cba |
|
|
|
586cba |
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
|
|
|
586cba |
Acked-by: Jason Wang <jasowang@redhat.com>
|
|
|
586cba |
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
|
|
|
586cba |
Signed-off-by: Jason Wang <jasowang@redhat.com>
|
|
|
586cba |
|
|
|
586cba |
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
|
|
|
586cba |
---
|
|
|
586cba |
hw/virtio/vhost-vdpa.c | 7 +++----
|
|
|
586cba |
include/hw/virtio/vhost-vdpa.h | 4 ++++
|
|
|
586cba |
2 files changed, 7 insertions(+), 4 deletions(-)
|
|
|
586cba |
|
|
|
586cba |
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
|
|
|
586cba |
index 28df57b12e..14b02fe079 100644
|
|
|
586cba |
--- a/hw/virtio/vhost-vdpa.c
|
|
|
586cba |
+++ b/hw/virtio/vhost-vdpa.c
|
|
|
586cba |
@@ -71,8 +71,8 @@ static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section,
|
|
|
586cba |
return false;
|
|
|
586cba |
}
|
|
|
586cba |
|
|
|
586cba |
-static int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
|
|
|
586cba |
- void *vaddr, bool readonly)
|
|
|
586cba |
+int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
|
|
|
586cba |
+ void *vaddr, bool readonly)
|
|
|
586cba |
{
|
|
|
586cba |
struct vhost_msg_v2 msg = {};
|
|
|
586cba |
int fd = v->device_fd;
|
|
|
586cba |
@@ -97,8 +97,7 @@ static int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
|
|
|
586cba |
return ret;
|
|
|
586cba |
}
|
|
|
586cba |
|
|
|
586cba |
-static int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova,
|
|
|
586cba |
- hwaddr size)
|
|
|
586cba |
+int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size)
|
|
|
586cba |
{
|
|
|
586cba |
struct vhost_msg_v2 msg = {};
|
|
|
586cba |
int fd = v->device_fd;
|
|
|
586cba |
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
|
|
|
586cba |
index a29dbb3f53..7214eb47dc 100644
|
|
|
586cba |
--- a/include/hw/virtio/vhost-vdpa.h
|
|
|
586cba |
+++ b/include/hw/virtio/vhost-vdpa.h
|
|
|
586cba |
@@ -39,4 +39,8 @@ typedef struct vhost_vdpa {
|
|
|
586cba |
VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
|
|
|
586cba |
} VhostVDPA;
|
|
|
586cba |
|
|
|
586cba |
+int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
|
|
|
586cba |
+ void *vaddr, bool readonly);
|
|
|
586cba |
+int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size);
|
|
|
586cba |
+
|
|
|
586cba |
#endif
|
|
|
586cba |
--
|
|
|
586cba |
2.31.1
|
|
|
586cba |
|