Advertise bi-endianness support in the feature flags, and provide
byte-swapping of the config structure depending on the guest selection.
Cc: Pekka Enberg <penb...@kernel.org>
Cc: Will Deacon <will.dea...@arm.com>
Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
---
tools/kvm/virtio/console.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/tools/kvm/virtio/console.c b/tools/kvm/virtio/console.c
index f982dab7..ac041df 100644
--- a/tools/kvm/virtio/console.c
+++ b/tools/kvm/virtio/console.c
@@ -126,12 +126,19 @@ static u8 *get_config(struct kvm *kvm, void *dev)
static u32 get_host_features(struct kvm *kvm, void *dev)
{
- return 0;
+ return VIRTIO_RING_ENDIAN;
}
static void set_guest_features(struct kvm *kvm, void *dev, u32 features)
{
- /* Unused */
+ struct con_dev *cdev = dev;
+ struct virtio_console_config *conf = &cdev->config;
+
+ cdev->features = features;
+
+ conf->cols = htole16(conf->cols);
+ conf->rows = htole16(conf->rows);
+ conf->max_nr_ports = htole32(conf->max_nr_ports);
}
static int init_vq(struct kvm *kvm, void *dev, u32 vq, u32 page_size, u32
align,
@@ -149,6 +156,7 @@ static int init_vq(struct kvm *kvm, void *dev, u32 vq, u32
page_size, u32 align,
p = virtio_get_vq(kvm, queue->pfn, page_size);
vring_init(&queue->vring, VIRTIO_CONSOLE_QUEUE_SIZE, p, align);
+ virt_queue__init(queue, cdev.features);
if (vq == VIRTIO_CONSOLE_TX_QUEUE) {
thread_pool__init_job(&cdev.jobs[vq], kvm,
virtio_console_handle_callback, queue);
--
1.8.2.3
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