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Commit ab8cd818 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  lguest: notify on empty
  virtio: force callback on empty.
  virtio_blk: fix endianess annotations
  virtio_config: fix len calculation of config elements
  virtio_net: another race with virtio_net and enable_cb
  virtio: An entropy device, as suggested by hpa.
  virtio_blk: allow read-only disks
  lguest: fix ugly <NULL> in /proc/interrupts
  virtio: set device index in common code.
  virtio: virtio_pci should not set bus_id.
  virtio: bus_id for devices should contain 'virtio'
  Fix crash in virtio_blk during modprobe ; rmmod ; modprobe
  lguest: use ioremap_cache, not ioremap
parents f8356ed0 20887611

Documentation/lguest/lguest.c

+10 −2
Original line number Diff line number Diff line
@@ -157,6 +157,9 @@ struct virtqueue 


	/* The routine to call when the Guest pings us. */

	void (*handle_output)(int fd, struct virtqueue *me);



	/* Outstanding buffers */

	unsigned int inflight;

};



/* Remember the arguments to the program so we can "reboot" */
@@ -702,6 +705,7 @@ static unsigned get_vq_desc(struct virtqueue *vq, 
			errx(1, "Looped descriptor");

	} while ((i = next_desc(vq, i)) != vq->vring.num);



	vq->inflight++;

	return head;

}
@@ -719,6 +723,7 @@ static void add_used(struct virtqueue *vq, unsigned int head, int len) 
	/* Make sure buffer is written before we update index. */

	wmb();

	vq->vring.used->idx++;

	vq->inflight--;

}



/* This actually sends the interrupt for this virtqueue */
@@ -726,8 +731,9 @@ static void trigger_irq(int fd, struct virtqueue *vq) 
{

	unsigned long buf[] = { LHREQ_IRQ, vq->config.irq };



	/* If they don't want an interrupt, don't send one. */

	if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT)

	/* If they don't want an interrupt, don't send one, unless empty. */

	if ((vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT)

	    && vq->inflight)

		return;



	/* Send the Guest an interrupt tell them we used something up. */
@@ -1107,6 +1113,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs, 
	vq->next = NULL;

	vq->last_avail_idx = 0;

	vq->dev = dev;

	vq->inflight = 0;



	/* Initialize the configuration. */

	vq->config.num = num_descs;
@@ -1368,6 +1375,7 @@ static void setup_tun_net(const char *arg) 


	/* Tell Guest what MAC address to use. */

	add_feature(dev, VIRTIO_NET_F_MAC);

	add_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY);

	set_config(dev, sizeof(conf), &conf);



	/* We don't need the socket any more; setup is done. */

arch/x86/lguest/boot.c

+3 −2
Original line number Diff line number Diff line
@@ -582,8 +582,9 @@ static void __init lguest_init_IRQ(void) 
		int vector = FIRST_EXTERNAL_VECTOR + i;

		if (vector != SYSCALL_VECTOR) {

			set_intr_gate(vector, interrupt[i]);

			set_irq_chip_and_handler(i, &lguest_irq_controller,

						 handle_level_irq);

			set_irq_chip_and_handler_name(i, &lguest_irq_controller,

						      handle_level_irq,

						      "level");

		}

	}

	/* This call is required to set up for 4k stacks, where we have

drivers/block/virtio_blk.c

+6 −1
Original line number Diff line number Diff line
@@ -260,6 +260,10 @@ static int virtblk_probe(struct virtio_device *vdev) 
	if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))

		blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);



	/* If disk is read-only in the host, the guest should obey */

	if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))

		set_disk_ro(vblk->disk, 1);



	/* Host must always specify the capacity. */

	vdev->config->get(vdev, offsetof(struct virtio_blk_config, capacity),

			  &cap, sizeof(cap));
@@ -311,6 +315,7 @@ static void virtblk_remove(struct virtio_device *vdev) 
	/* Stop all the virtqueues. */

	vdev->config->reset(vdev);



	del_gendisk(vblk->disk);

	blk_cleanup_queue(vblk->disk->queue);

	put_disk(vblk->disk);

	mempool_destroy(vblk->pool);
@@ -325,7 +330,7 @@ static struct virtio_device_id id_table[] = { 


static unsigned int features[] = {

	VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,

	VIRTIO_BLK_F_GEOMETRY,

	VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO,

};



static struct virtio_driver virtio_blk = {

drivers/char/hw_random/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -112,3 +112,12 @@ config HW_RANDOM_PASEMI 


	  If unsure, say Y.



config HW_RANDOM_VIRTIO

	tristate "VirtIO Random Number Generator support"

	depends on HW_RANDOM && VIRTIO

	---help---

	  This driver provides kernel-side support for the virtual Random Number

	  Generator hardware.



	  To compile this driver as a module, choose M here: the

	  module will be called virtio-rng.  If unsure, say N.

drivers/char/hw_random/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -11,3 +11,4 @@ obj-$(CONFIG_HW_RANDOM_VIA) += via-rng.o 
obj-$(CONFIG_HW_RANDOM_IXP4XX) += ixp4xx-rng.o

obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o

obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o

obj-$(CONFIG_HW_RANDOM_VIRTIO) += virtio-rng.o