---

yaml
---
r: 255297
b: refs/heads/master
c: e2cbc11
h: refs/heads/master
i:
  255295: 21a91ee
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e11ec900cfbea3d8f6a188674ee6fcb65f2a73d6
+refs/heads/master: e2cbc11c0e1225bd5fe183a967fc80df3db10745

trunk/Documentation/virtual/lguest/Makefile

@@ -1,5 +1,5 @@
 # This creates the demonstration utility "lguest" which runs a Linux guest.
-# Missing headers?  Add "-I../../../include -I../../../arch/x86/include"
+# Missing headers?  Add "-I../../include -I../../arch/x86/include"
 CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE
 
 all: lguest

trunk/Documentation/virtual/lguest/lguest.c

@@ -49,7 +49,7 @@
 #include <linux/virtio_rng.h>
 #include <linux/virtio_ring.h>
 #include <asm/bootparam.h>
-#include "../../../include/linux/lguest_launcher.h"
+#include "../../include/linux/lguest_launcher.h"
 /*L:110
  * We can ignore the 42 include files we need for this program, but I do want
  * to draw attention to the use of kernel-style types.
@@ -135,6 +135,9 @@ struct device {
 	/* Is it operational */
 	bool running;
 
+	/* Does Guest want an intrrupt on empty? */
+	bool irq_on_empty;
+
 	/* Device-specific data. */
 	void *priv;
 };
@@ -634,7 +637,10 @@ static void trigger_irq(struct virtqueue *vq)
 
 	/* If they don't want an interrupt, don't send one... */
 	if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT) {
-		return;
+		/* ... unless they've asked us to force one on empty. */
+		if (!vq->dev->irq_on_empty
+		    || lg_last_avail(vq) != vq->vring.avail->idx)
+			return;
 	}
 
 	/* Send the Guest an interrupt tell them we used something up. */
@@ -1051,6 +1057,15 @@ static void create_thread(struct virtqueue *vq)
 	close(vq->eventfd);
 }
 
+static bool accepted_feature(struct device *dev, unsigned int bit)
+{
+	const u8 *features = get_feature_bits(dev) + dev->feature_len;
+
+	if (dev->feature_len < bit / CHAR_BIT)
+		return false;
+	return features[bit / CHAR_BIT] & (1 << (bit % CHAR_BIT));
+}
+
 static void start_device(struct device *dev)
 {
 	unsigned int i;
@@ -1064,6 +1079,8 @@ static void start_device(struct device *dev)
 		verbose(" %02x", get_feature_bits(dev)
 			[dev->feature_len+i]);
 
+	dev->irq_on_empty = accepted_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY);
+
 	for (vq = dev->vq; vq; vq = vq->next) {
 		if (vq->service)
 			create_thread(vq);
@@ -1547,6 +1564,7 @@ static void setup_tun_net(char *arg)
 	/* Set up the tun device. */
 	configure_device(ipfd, tapif, ip);
 
+	add_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY);
 	/* Expect Guest to handle everything except UFO */
 	add_feature(dev, VIRTIO_NET_F_CSUM);
 	add_feature(dev, VIRTIO_NET_F_GUEST_CSUM);

trunk/arch/ia64/include/asm/unistd.h

@@ -320,12 +320,11 @@
 #define __NR_clock_adjtime		1328
 #define __NR_syncfs			1329
 #define __NR_setns			1330
-#define __NR_sendmmsg			1331
 
 #ifdef __KERNEL__
 
 
-#define NR_syscalls			308 /* length of syscall table */
+#define NR_syscalls			307 /* length of syscall table */
 
 /*
  * The following defines stop scripts/checksyscalls.sh from complaining about

trunk/arch/ia64/kernel/entry.S

@@ -1776,7 +1776,6 @@ sys_call_table:
 	data8 sys_clock_adjtime
 	data8 sys_syncfs
 	data8 sys_setns				// 1330
-	data8 sys_sendmmsg
 
 	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls
 #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */

trunk/arch/powerpc/platforms/powermac/pic.c

@@ -715,8 +715,7 @@ static struct syscore_ops pmacpic_syscore_ops = {
 
 static int __init init_pmacpic_syscore(void)
 {
-	if (pmac_irq_hw[0])
-		register_syscore_ops(&pmacpic_syscore_ops);
+	register_syscore_ops(&pmacpic_syscore_ops);
 	return 0;
 }
 

trunk/arch/x86/kernel/Makefile

@@ -8,7 +8,6 @@ CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
 
 ifdef CONFIG_FUNCTION_TRACER
 # Do not profile debug and lowlevel utilities
-CFLAGS_REMOVE_tsc.o = -pg
 CFLAGS_REMOVE_rtc.o = -pg
 CFLAGS_REMOVE_paravirt-spinlocks.o = -pg
 CFLAGS_REMOVE_pvclock.o = -pg
@@ -29,7 +28,6 @@ CFLAGS_paravirt.o	:= $(nostackp)
 GCOV_PROFILE_vsyscall_64.o	:= n
 GCOV_PROFILE_hpet.o		:= n
 GCOV_PROFILE_tsc.o		:= n
-GCOV_PROFILE_vread_tsc_64.o	:= n
 GCOV_PROFILE_paravirt.o		:= n
 
 # vread_tsc_64 is hot and should be fully optimized:

trunk/arch/x86/kernel/process.c

@@ -642,7 +642,7 @@ static int __init idle_setup(char *str)
 		boot_option_idle_override = IDLE_POLL;
 	} else if (!strcmp(str, "mwait")) {
 		boot_option_idle_override = IDLE_FORCE_MWAIT;
-		WARN_ONCE(1, "\"idle=mwait\" will be removed in 2012\n");
+		WARN_ONCE(1, "\idle=mwait\" will be removed in 2012\"\n");
 	} else if (!strcmp(str, "halt")) {
 		/*
 		 * When the boot option of idle=halt is added, halt is

trunk/arch/x86/kernel/smpboot.c

@@ -1332,7 +1332,7 @@ static inline void mwait_play_dead(void)
 	void *mwait_ptr;
 	struct cpuinfo_x86 *c = __this_cpu_ptr(&cpu_info);
 
-	if (!(this_cpu_has(X86_FEATURE_MWAIT) && mwait_usable(c)))
+	if (!this_cpu_has(X86_FEATURE_MWAIT) && mwait_usable(c))
 		return;
 	if (!this_cpu_has(X86_FEATURE_CLFLSH))
 		return;

trunk/arch/x86/lguest/boot.c

@@ -993,7 +993,6 @@ static void lguest_time_irq(unsigned int irq, struct irq_desc *desc)
 static void lguest_time_init(void)
 {
 	/* Set up the timer interrupt (0) to go to our simple timer routine */
-	lguest_setup_irq(0);
 	irq_set_handler(0, lguest_time_irq);
 
 	clocksource_register_hz(&lguest_clock, NSEC_PER_SEC);

trunk/drivers/block/virtio_blk.c

@@ -6,13 +6,10 @@
 #include <linux/virtio.h>
 #include <linux/virtio_blk.h>
 #include <linux/scatterlist.h>
-#include <linux/string_helpers.h>
-#include <scsi/scsi_cmnd.h>
 
 #define PART_BITS 4
 
 static int major, index;
-struct workqueue_struct *virtblk_wq;
 
 struct virtio_blk
 {
@@ -29,9 +26,6 @@ struct virtio_blk
 
 	mempool_t *pool;
 
-	/* Process context for config space updates */
-	struct work_struct config_work;
-
 	/* What host tells us, plus 2 for header & tailer. */
 	unsigned int sg_elems;
 
@@ -147,7 +141,7 @@ static bool do_req(struct request_queue *q, struct virtio_blk *vblk,
 	num = blk_rq_map_sg(q, vbr->req, vblk->sg + out);
 
 	if (vbr->req->cmd_type == REQ_TYPE_BLOCK_PC) {
-		sg_set_buf(&vblk->sg[num + out + in++], vbr->req->sense, SCSI_SENSE_BUFFERSIZE);
+		sg_set_buf(&vblk->sg[num + out + in++], vbr->req->sense, 96);
 		sg_set_buf(&vblk->sg[num + out + in++], &vbr->in_hdr,
 			   sizeof(vbr->in_hdr));
 	}
@@ -297,46 +291,6 @@ static ssize_t virtblk_serial_show(struct device *dev,
 }
 DEVICE_ATTR(serial, S_IRUGO, virtblk_serial_show, NULL);
 
-static void virtblk_config_changed_work(struct work_struct *work)
-{
-	struct virtio_blk *vblk =
-		container_of(work, struct virtio_blk, config_work);
-	struct virtio_device *vdev = vblk->vdev;
-	struct request_queue *q = vblk->disk->queue;
-	char cap_str_2[10], cap_str_10[10];
-	u64 capacity, size;
-
-	/* Host must always specify the capacity. */
-	vdev->config->get(vdev, offsetof(struct virtio_blk_config, capacity),
-			  &capacity, sizeof(capacity));
-
-	/* If capacity is too big, truncate with warning. */
-	if ((sector_t)capacity != capacity) {
-		dev_warn(&vdev->dev, "Capacity %llu too large: truncating\n",
-			 (unsigned long long)capacity);
-		capacity = (sector_t)-1;
-	}
-
-	size = capacity * queue_logical_block_size(q);
-	string_get_size(size, STRING_UNITS_2, cap_str_2, sizeof(cap_str_2));
-	string_get_size(size, STRING_UNITS_10, cap_str_10, sizeof(cap_str_10));
-
-	dev_notice(&vdev->dev,
-		  "new size: %llu %d-byte logical blocks (%s/%s)\n",
-		  (unsigned long long)capacity,
-		  queue_logical_block_size(q),
-		  cap_str_10, cap_str_2);
-
-	set_capacity(vblk->disk, capacity);
-}
-
-static void virtblk_config_changed(struct virtio_device *vdev)
-{
-	struct virtio_blk *vblk = vdev->priv;
-
-	queue_work(virtblk_wq, &vblk->config_work);
-}
-
 static int __devinit virtblk_probe(struct virtio_device *vdev)
 {
 	struct virtio_blk *vblk;
@@ -373,7 +327,6 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
 	vblk->vdev = vdev;
 	vblk->sg_elems = sg_elems;
 	sg_init_table(vblk->sg, vblk->sg_elems);
-	INIT_WORK(&vblk->config_work, virtblk_config_changed_work);
 
 	/* We expect one virtqueue, for output. */
 	vblk->vq = virtio_find_single_vq(vdev, blk_done, "requests");
@@ -524,8 +477,6 @@ static void __devexit virtblk_remove(struct virtio_device *vdev)
 {
 	struct virtio_blk *vblk = vdev->priv;
 
-	flush_work(&vblk->config_work);
-
 	/* Nothing should be pending. */
 	BUG_ON(!list_empty(&vblk->reqs));
 
@@ -557,47 +508,27 @@ static unsigned int features[] = {
  * Use __refdata to avoid this warning.
  */
 static struct virtio_driver __refdata virtio_blk = {
-	.feature_table		= features,
-	.feature_table_size	= ARRAY_SIZE(features),
-	.driver.name		= KBUILD_MODNAME,
-	.driver.owner		= THIS_MODULE,
-	.id_table		= id_table,
-	.probe			= virtblk_probe,
-	.remove			= __devexit_p(virtblk_remove),
-	.config_changed		= virtblk_config_changed,
+	.feature_table = features,
+	.feature_table_size = ARRAY_SIZE(features),
+	.driver.name =	KBUILD_MODNAME,
+	.driver.owner =	THIS_MODULE,
+	.id_table =	id_table,
+	.probe =	virtblk_probe,
+	.remove =	__devexit_p(virtblk_remove),
 };
 
 static int __init init(void)
 {
-	int error;
-
-	virtblk_wq = alloc_workqueue("virtio-blk", 0, 0);
-	if (!virtblk_wq)
-		return -ENOMEM;
-
 	major = register_blkdev(0, "virtblk");
-	if (major < 0) {
-		error = major;
-		goto out_destroy_workqueue;
-	}
-
-	error = register_virtio_driver(&virtio_blk);
-	if (error)
-		goto out_unregister_blkdev;
-	return 0;
-
-out_unregister_blkdev:
-	unregister_blkdev(major, "virtblk");
-out_destroy_workqueue:
-	destroy_workqueue(virtblk_wq);
-	return error;
+	if (major < 0)
+		return major;
+	return register_virtio_driver(&virtio_blk);
 }
 
 static void __exit fini(void)
 {
 	unregister_blkdev(major, "virtblk");
 	unregister_virtio_driver(&virtio_blk);
-	destroy_workqueue(virtblk_wq);
 }
 module_init(init);
 module_exit(fini);

trunk/drivers/char/virtio_console.c

@@ -1677,12 +1677,17 @@ static int __devinit virtcons_probe(struct virtio_device *vdev)
 	portdev->config.max_nr_ports = 1;
 	if (virtio_has_feature(vdev, VIRTIO_CONSOLE_F_MULTIPORT)) {
 		multiport = true;
+		vdev->features[0] |= 1 << VIRTIO_CONSOLE_F_MULTIPORT;
+
 		vdev->config->get(vdev, offsetof(struct virtio_console_config,
 						 max_nr_ports),
 				  &portdev->config.max_nr_ports,
 				  sizeof(portdev->config.max_nr_ports));
 	}
 
+	/* Let the Host know we support multiple ports.*/
+	vdev->config->finalize_features(vdev);
+
 	err = init_vqs(portdev);
 	if (err < 0) {
 		dev_err(&vdev->dev, "Error %d initializing vqs\n", err);

trunk/drivers/net/3c509.c

@@ -185,7 +185,7 @@ static int max_interrupt_work = 10;
 static int nopnp;
 #endif
 
-static int __devinit el3_common_init(struct net_device *dev);
+static int el3_common_init(struct net_device *dev);
 static void el3_common_remove(struct net_device *dev);
 static ushort id_read_eeprom(int index);
 static ushort read_eeprom(int ioaddr, int index);
@@ -395,7 +395,7 @@ static struct isa_driver el3_isa_driver = {
 static int isa_registered;
 
 #ifdef CONFIG_PNP
-static struct pnp_device_id el3_pnp_ids[] = {
+static const struct pnp_device_id el3_pnp_ids[] __devinitconst = {
 	{ .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
 	{ .id = "TCM5091" }, /* 3Com Etherlink III */
 	{ .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
@@ -478,7 +478,7 @@ static int pnp_registered;
 #endif /* CONFIG_PNP */
 
 #ifdef CONFIG_EISA
-static struct eisa_device_id el3_eisa_ids[] = {
+static const struct eisa_device_id el3_eisa_ids[] __devinitconst = {
 		{ "TCM5090" },
 		{ "TCM5091" },
 		{ "TCM5092" },
@@ -508,7 +508,7 @@ static int eisa_registered;
 #ifdef CONFIG_MCA
 static int el3_mca_probe(struct device *dev);
 
-static short el3_mca_adapter_ids[] __initdata = {
+static const short el3_mca_adapter_ids[] __devinitconst = {
 		0x627c,
 		0x627d,
 		0x62db,
@@ -517,7 +517,7 @@ static short el3_mca_adapter_ids[] __initdata = {
 		0x0000
 };
 
-static char *el3_mca_adapter_names[] __initdata = {
+static const char *const el3_mca_adapter_names[] __devinitconst = {
 		"3Com 3c529 EtherLink III (10base2)",
 		"3Com 3c529 EtherLink III (10baseT)",
 		"3Com 3c529 EtherLink III (test mode)",
@@ -601,7 +601,7 @@ static void el3_common_remove (struct net_device *dev)
 }
 
 #ifdef CONFIG_MCA
-static int __init el3_mca_probe(struct device *device)
+static int __devinit el3_mca_probe(struct device *device)
 {
 	/* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch,
 	 * heavily modified by Chris Beauregard
@@ -671,7 +671,7 @@ static int __init el3_mca_probe(struct device *device)
 #endif /* CONFIG_MCA */
 
 #ifdef CONFIG_EISA
-static int __init el3_eisa_probe (struct device *device)
+static int __devinit el3_eisa_probe (struct device *device)
 {
 	short i;
 	int ioaddr, irq, if_port;