Signed-off-by: Sasha Levin <levinsasha...@gmail.com>
---
tools/kvm/virtio/console.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/tools/kvm/virtio/console.c b/tools/kvm/virtio/console.c
index e5d59c0..ef9b1fc 100644
--- a/tools/kvm/virtio/console.c
+++ b/tools/kvm/virtio/console.c
@@ -10,6 +10,7 @@
#include "kvm/pci.h"
#include "kvm/threadpool.h"
#include "kvm/irq.h"
+#include "kvm/guest_compat.h"
#include <linux/virtio_console.h>
#include <linux/virtio_ring.h>
@@ -50,6 +51,7 @@ struct con_dev {
u8 isr;
u16 queue_selector;
u16 base_addr;
+ int compat_id;
struct thread_pool__job jobs[VIRTIO_CONSOLE_NUM_QUEUES];
};
@@ -196,6 +198,8 @@ static bool virtio_console_pci_io_out(struct ioport
*ioport, struct kvm *kvm, u1
assert(cdev.queue_selector < VIRTIO_CONSOLE_NUM_QUEUES);
+ compat__remove_message(cdev.compat_id);
+
queue = &cdev.vqs[cdev.queue_selector];
queue->pfn = ioport__read32(data);
p = guest_pfn_to_host(kvm, queue->pfn);
@@ -254,4 +258,10 @@ void virtio_console__init(struct kvm *kvm)
virtio_console_pci_device.bar[0] = console_base_addr |
PCI_BASE_ADDRESS_SPACE_IO;
cdev.base_addr = console_base_addr;
pci__register(&virtio_console_pci_device, dev);
+
+ cdev.compat_id = compat__add_message("virtio-console device was not
detected",
+ "While you have requested a
virtio-console device, "
+ "the guest kernel didn't seem
to detect it.\n"
+ "Please make sure that the
kernel was compiled"
+ "with CONFIG_VIRTIO_CONSOLE.");
}
--
1.7.6
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