Signed-off-by: Sasha Levin <[email protected]>
---
tools/kvm/virtio/blk.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/tools/kvm/virtio/blk.c b/tools/kvm/virtio/blk.c
index f5ecdd9..856c418 100644
--- a/tools/kvm/virtio/blk.c
+++ b/tools/kvm/virtio/blk.c
@@ -11,6 +11,7 @@
#include "kvm/pci.h"
#include "kvm/threadpool.h"
#include "kvm/ioeventfd.h"
+#include "kvm/guest_compat.h"
#include <linux/virtio_ring.h>
#include <linux/virtio_blk.h>
@@ -48,6 +49,7 @@ struct blk_dev {
u16 config_vector;
u8 status;
u8 isr;
+ int compat_id;
/* virtio queue */
u16 queue_selector;
@@ -208,6 +210,8 @@ static bool virtio_blk_pci_io_out(struct ioport *ioport,
struct kvm *kvm, u16 po
struct virt_queue *queue;
void *p;
+ compat__remove_message(bdev->compat_id);
+
queue = &bdev->vqs[bdev->queue_selector];
queue->pfn = ioport__read32(data);
p = guest_pfn_to_host(kvm, queue->pfn);
@@ -322,6 +326,12 @@ void virtio_blk__init(struct kvm *kvm, struct disk_image
*disk)
ioeventfd__add_event(&ioevent);
}
+
+ bdev->compat_id = compat__add_message("virtio-blk device was not
detected",
+ "While you have requested a
virtio-blk device, "
+ "the guest kernel didn't seem
to detect it.\n"
+ "Please make sure that the
kernel was compiled"
+ "with CONFIG_VIRTIO_BLK.");
}
void virtio_blk__init_all(struct kvm *kvm)
--
1.7.6
--
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