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kvm tools: Add guest compatability warning to virtio-blk

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Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Sasha Levin
2015-06-01 16:39:47 +01:00
committed by Will Deacon
parent c75b037f39
commit 404d164b08
1 changed files with 10 additions and 0 deletions
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virtio/blk.c
+10
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@@ -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)