Commit 10df38ca 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: (44 commits)
  Add MAINTAINERS entry for virtio_console
  virtio: console: Fill ports' entire in_vq with buffers
  virtio: console: Error out if we can't allocate buffers for control queue
  virtio: console: Add ability to remove module
  virtio: console: Ensure no memleaks in case of unused buffers
  virtio: console: show error message if hvc_alloc fails for console ports
  virtio: console: Add debugfs files for each port to expose debug info
  virtio: console: Add ability to hot-unplug ports
  virtio: console: Handle port hot-plug
  virtio: console: Remove cached data on port close
  virtio: console: Register with sysfs and create a 'name' attribute for ports
  virtio: console: Ensure only one process can have a port open at a time
  virtio: console: Add file operations to ports for open/read/write/poll
  virtio: console: Associate each port with a char device
  virtio: console: Prepare for writing to userspace buffers
  virtio: console: Add a new MULTIPORT feature, support for generic ports
  virtio: console: Introduce a send_buf function for a common path for sending data to host
  virtio: console: Introduce function to hand off data from host to readers
  virtio: console: Separate out find_vqs operation into a different function
  virtio: console: Separate out console init into a new function
  ...
parents dbd00429 c6100286

Documentation/lguest/lguest.c

+0 −1
Original line number Diff line number Diff line
@@ -34,7 +34,6 @@ 
#include <sys/uio.h>

#include <termios.h>

#include <getopt.h>

#include <zlib.h>

#include <assert.h>

#include <sched.h>

#include <limits.h>

MAINTAINERS

+6 −0
Original line number Diff line number Diff line
@@ -2393,6 +2393,12 @@ L: linuxppc-dev@ozlabs.org 
S:	Odd Fixes

F:	drivers/char/hvc_*



VIRTIO CONSOLE DRIVER

M:	Amit Shah <amit.shah@redhat.com>

L:	virtualization@lists.linux-foundation.org

S:	Maintained

F:	drivers/char/virtio_console.c



GSPCA FINEPIX SUBDRIVER

M:	Frank Zago <frank@zago.net>

L:	linux-media@vger.kernel.org

drivers/block/virtio_blk.c

+46 −15
Original line number Diff line number Diff line
@@ -243,10 +243,12 @@ static int index_to_minor(int index) 
static int __devinit virtblk_probe(struct virtio_device *vdev)

{

	struct virtio_blk *vblk;

	struct request_queue *q;

	int err;

	u64 cap;

	u32 v;

	u32 blk_size, sg_elems;

	u32 v, blk_size, sg_elems, opt_io_size;

	u16 min_io_size;

	u8 physical_block_exp, alignment_offset;



	if (index_to_minor(index) >= 1 << MINORBITS)

		return -ENOSPC;
@@ -293,13 +295,13 @@ static int __devinit virtblk_probe(struct virtio_device *vdev) 
		goto out_mempool;

	}



	vblk->disk->queue = blk_init_queue(do_virtblk_request, &vblk->lock);

	if (!vblk->disk->queue) {

	q = vblk->disk->queue = blk_init_queue(do_virtblk_request, &vblk->lock);

	if (!q) {

		err = -ENOMEM;

		goto out_put_disk;

	}



	vblk->disk->queue->queuedata = vblk;

	q->queuedata = vblk;



	if (index < 26) {

		sprintf(vblk->disk->disk_name, "vd%c", 'a' + index % 26);
@@ -323,10 +325,10 @@ static int __devinit virtblk_probe(struct virtio_device *vdev) 


	/* If barriers are supported, tell block layer that queue is ordered */

	if (virtio_has_feature(vdev, VIRTIO_BLK_F_FLUSH))

		blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_DRAIN_FLUSH,

		blk_queue_ordered(q, QUEUE_ORDERED_DRAIN_FLUSH,

				  virtblk_prepare_flush);

	else if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))

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

		blk_queue_ordered(q, 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))
@@ -345,14 +347,14 @@ static int __devinit virtblk_probe(struct virtio_device *vdev) 
	set_capacity(vblk->disk, cap);



	/* We can handle whatever the host told us to handle. */

	blk_queue_max_phys_segments(vblk->disk->queue, vblk->sg_elems-2);

	blk_queue_max_hw_segments(vblk->disk->queue, vblk->sg_elems-2);

	blk_queue_max_phys_segments(q, vblk->sg_elems-2);

	blk_queue_max_hw_segments(q, vblk->sg_elems-2);



	/* No need to bounce any requests */

	blk_queue_bounce_limit(vblk->disk->queue, BLK_BOUNCE_ANY);

	blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);



	/* No real sector limit. */

	blk_queue_max_sectors(vblk->disk->queue, -1U);

	blk_queue_max_sectors(q, -1U);



	/* Host can optionally specify maximum segment size and number of

	 * segments. */
@@ -360,16 +362,45 @@ static int __devinit virtblk_probe(struct virtio_device *vdev) 
				offsetof(struct virtio_blk_config, size_max),

				&v);

	if (!err)

		blk_queue_max_segment_size(vblk->disk->queue, v);

		blk_queue_max_segment_size(q, v);

	else

		blk_queue_max_segment_size(vblk->disk->queue, -1U);

		blk_queue_max_segment_size(q, -1U);



	/* Host can optionally specify the block size of the device */

	err = virtio_config_val(vdev, VIRTIO_BLK_F_BLK_SIZE,

				offsetof(struct virtio_blk_config, blk_size),

				&blk_size);

	if (!err)

		blk_queue_logical_block_size(vblk->disk->queue, blk_size);

		blk_queue_logical_block_size(q, blk_size);

	else

		blk_size = queue_logical_block_size(q);



	/* Use topology information if available */

	err = virtio_config_val(vdev, VIRTIO_BLK_F_TOPOLOGY,

			offsetof(struct virtio_blk_config, physical_block_exp),

			&physical_block_exp);

	if (!err && physical_block_exp)

		blk_queue_physical_block_size(q,

				blk_size * (1 << physical_block_exp));



	err = virtio_config_val(vdev, VIRTIO_BLK_F_TOPOLOGY,

			offsetof(struct virtio_blk_config, alignment_offset),

			&alignment_offset);

	if (!err && alignment_offset)

		blk_queue_alignment_offset(q, blk_size * alignment_offset);



	err = virtio_config_val(vdev, VIRTIO_BLK_F_TOPOLOGY,

			offsetof(struct virtio_blk_config, min_io_size),

			&min_io_size);

	if (!err && min_io_size)

		blk_queue_io_min(q, blk_size * min_io_size);



	err = virtio_config_val(vdev, VIRTIO_BLK_F_TOPOLOGY,

			offsetof(struct virtio_blk_config, opt_io_size),

			&opt_io_size);

	if (!err && opt_io_size)

		blk_queue_io_opt(q, blk_size * opt_io_size);





	add_disk(vblk->disk);

	return 0;
@@ -412,7 +443,7 @@ 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_RO, VIRTIO_BLK_F_BLK_SIZE,

	VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_FLUSH

	VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_FLUSH, VIRTIO_BLK_F_TOPOLOGY

};



/*

drivers/char/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -666,6 +666,14 @@ config VIRTIO_CONSOLE 
	help

	  Virtio console for use with lguest and other hypervisors.



	  Also serves as a general-purpose serial device for data

	  transfer between the guest and host.  Character devices at

	  /dev/vportNpn will be created when corresponding ports are

	  found, where N is the device number and n is the port number

	  within that device.  If specified by the host, a sysfs

	  attribute called 'name' will be populated with a name for

	  the port which can be used by udev scripts to create a

	  symlink to the device.



config HVCS

	tristate "IBM Hypervisor Virtual Console Server support"

drivers/char/hvc_beat.c

+1 −1
Original line number Diff line number Diff line
@@ -84,7 +84,7 @@ static int hvc_beat_put_chars(uint32_t vtermno, const char *buf, int cnt) 
	return cnt;

}



static struct hv_ops hvc_beat_get_put_ops = {

static const struct hv_ops hvc_beat_get_put_ops = {

	.get_chars = hvc_beat_get_chars,

	.put_chars = hvc_beat_put_chars,

};

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