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-rw-r--r--arch/um/drivers/Kconfig69
-rw-r--r--arch/um/drivers/Makefile2
-rw-r--r--arch/um/drivers/chan.h1
-rw-r--r--arch/um/drivers/chan_kern.c10
-rw-r--r--arch/um/drivers/chan_user.c9
-rw-r--r--arch/um/drivers/daemon_kern.c2
-rw-r--r--arch/um/drivers/line.c22
-rw-r--r--arch/um/drivers/line.h4
-rw-r--r--arch/um/drivers/mconsole_kern.c12
-rw-r--r--arch/um/drivers/mmapper_kern.c2
-rw-r--r--arch/um/drivers/net_kern.c2
-rw-r--r--arch/um/drivers/port_user.c18
-rw-r--r--arch/um/drivers/random.c2
-rw-r--r--arch/um/drivers/ssl.c4
-rw-r--r--arch/um/drivers/stdio_console.c4
-rw-r--r--arch/um/drivers/ubd_kern.c21
-rw-r--r--arch/um/drivers/vector_kern.c112
-rw-r--r--arch/um/drivers/vector_kern.h3
-rw-r--r--arch/um/drivers/vector_user.c2
-rw-r--r--arch/um/drivers/vector_user.h2
-rw-r--r--arch/um/drivers/virt-pci.c21
-rw-r--r--arch/um/drivers/virtio_uml.c155
-rw-r--r--arch/um/drivers/xterm.c7
23 files changed, 295 insertions, 191 deletions
diff --git a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig
index f145842c40b9..5903e2b598aa 100644
--- a/arch/um/drivers/Kconfig
+++ b/arch/um/drivers/Kconfig
@@ -64,6 +64,13 @@ config XTERM_CHAN
its own xterm.
It is safe to say 'Y' here.
+config XTERM_CHAN_DEFAULT_EMULATOR
+ string "xterm channel default terminal emulator"
+ depends on XTERM_CHAN
+ default "xterm"
+ help
+ This option allows changing the default terminal emulator.
+
config NOCONFIG_CHAN
bool
default !(XTERM_CHAN && TTY_CHAN && PTY_CHAN && PORT_CHAN && NULL_CHAN)
@@ -231,42 +238,50 @@ config UML_NET_DAEMON
If unsure, say N.
+config UML_NET_DAEMON_DEFAULT_SOCK
+ string "Default socket for daemon transport"
+ default "/tmp/uml.ctl"
+ depends on UML_NET_DAEMON
+ help
+ This option allows setting the default socket for the daemon
+ transport, normally it defaults to /tmp/uml.ctl.
+
config UML_NET_VECTOR
bool "Vector I/O high performance network devices"
depends on UML_NET
select MAY_HAVE_RUNTIME_DEPS
help
- This User-Mode Linux network driver uses multi-message send
- and receive functions. The host running the UML guest must have
- a linux kernel version above 3.0 and a libc version > 2.13.
- This driver provides tap, raw, gre and l2tpv3 network transports
- with up to 4 times higher network throughput than the UML network
- drivers.
+ This User-Mode Linux network driver uses multi-message send
+ and receive functions. The host running the UML guest must have
+ a linux kernel version above 3.0 and a libc version > 2.13.
+ This driver provides tap, raw, gre and l2tpv3 network transports
+ with up to 4 times higher network throughput than the UML network
+ drivers.
config UML_NET_VDE
bool "VDE transport (obsolete)"
depends on UML_NET
select MAY_HAVE_RUNTIME_DEPS
help
- This User-Mode Linux network transport allows one or more running
- UMLs on a single host to communicate with each other and also
- with the rest of the world using Virtual Distributed Ethernet,
- an improved fork of uml_switch.
+ This User-Mode Linux network transport allows one or more running
+ UMLs on a single host to communicate with each other and also
+ with the rest of the world using Virtual Distributed Ethernet,
+ an improved fork of uml_switch.
- You must have libvdeplug installed in order to build the vde
- transport into UML.
+ You must have libvdeplug installed in order to build the vde
+ transport into UML.
- To use this form of networking, you will need to run vde_switch
- on the host.
+ To use this form of networking, you will need to run vde_switch
+ on the host.
- For more information, see <http://wiki.virtualsquare.org/>
- That site has a good overview of what VDE is and also examples
- of the UML command line to use to enable VDE networking.
+ For more information, see <http://wiki.virtualsquare.org/>
+ That site has a good overview of what VDE is and also examples
+ of the UML command line to use to enable VDE networking.
- NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
- migrate to UML_NET_VECTOR.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
- If unsure, say N.
+ If unsure, say N.
config UML_NET_MCAST
bool "Multicast transport (obsolete)"
@@ -296,19 +311,19 @@ config UML_NET_PCAP
depends on UML_NET
select MAY_HAVE_RUNTIME_DEPS
help
- The pcap transport makes a pcap packet stream on the host look
- like an ethernet device inside UML. This is useful for making
- UML act as a network monitor for the host. You must have libcap
- installed in order to build the pcap transport into UML.
+ The pcap transport makes a pcap packet stream on the host look
+ like an ethernet device inside UML. This is useful for making
+ UML act as a network monitor for the host. You must have libcap
+ installed in order to build the pcap transport into UML.
For more information, see
<http://user-mode-linux.sourceforge.net/old/networking.html> That site
has examples of the UML command line to use to enable this option.
- NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
- migrate to UML_NET_VECTOR.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
- If unsure, say N.
+ If unsure, say N.
config UML_NET_SLIRP
bool "SLiRP transport (obsolete)"
diff --git a/arch/um/drivers/Makefile b/arch/um/drivers/Makefile
index 803666e85414..e1dc4292bd22 100644
--- a/arch/um/drivers/Makefile
+++ b/arch/um/drivers/Makefile
@@ -70,4 +70,6 @@ obj-$(CONFIG_UML_PCI_OVER_VIRTIO) += virt-pci.o
USER_OBJS := fd.o null.o pty.o tty.o xterm.o slip_common.o pcap_user.o vde_user.o vector_user.o
CFLAGS_null.o = -DDEV_NULL=$(DEV_NULL_PATH)
+CFLAGS_xterm.o += '-DCONFIG_XTERM_CHAN_DEFAULT_EMULATOR="$(CONFIG_XTERM_CHAN_DEFAULT_EMULATOR)"'
+
include arch/um/scripts/Makefile.rules
diff --git a/arch/um/drivers/chan.h b/arch/um/drivers/chan.h
index c37cc4f26f91..3fec3b8406e9 100644
--- a/arch/um/drivers/chan.h
+++ b/arch/um/drivers/chan.h
@@ -36,7 +36,6 @@ extern int console_write_chan(struct chan *chan, const char *buf,
int len);
extern int console_open_chan(struct line *line, struct console *co);
extern void deactivate_chan(struct chan *chan, int irq);
-extern void reactivate_chan(struct chan *chan, int irq);
extern void chan_enable_winch(struct chan *chan, struct tty_port *port);
extern int enable_chan(struct line *line);
extern void close_chan(struct line *line);
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 62997055c454..26a702a06515 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -133,7 +133,7 @@ static void line_timer_cb(struct work_struct *work)
struct line *line = container_of(work, struct line, task.work);
if (!line->throttled)
- chan_interrupt(line, line->driver->read_irq);
+ chan_interrupt(line, line->read_irq);
}
int enable_chan(struct line *line)
@@ -195,9 +195,9 @@ void free_irqs(void)
chan = list_entry(ele, struct chan, free_list);
if (chan->input && chan->enabled)
- um_free_irq(chan->line->driver->read_irq, chan);
+ um_free_irq(chan->line->read_irq, chan);
if (chan->output && chan->enabled)
- um_free_irq(chan->line->driver->write_irq, chan);
+ um_free_irq(chan->line->write_irq, chan);
chan->enabled = 0;
}
}
@@ -215,9 +215,9 @@ static void close_one_chan(struct chan *chan, int delay_free_irq)
spin_unlock_irqrestore(&irqs_to_free_lock, flags);
} else {
if (chan->input && chan->enabled)
- um_free_irq(chan->line->driver->read_irq, chan);
+ um_free_irq(chan->line->read_irq, chan);
if (chan->output && chan->enabled)
- um_free_irq(chan->line->driver->write_irq, chan);
+ um_free_irq(chan->line->write_irq, chan);
chan->enabled = 0;
}
if (chan->ops->close != NULL)
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 6040817c036f..25727ed648b7 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -220,7 +220,7 @@ static int winch_tramp(int fd, struct tty_port *port, int *fd_out,
unsigned long *stack_out)
{
struct winch_data data;
- int fds[2], n, err;
+ int fds[2], n, err, pid;
char c;
err = os_pipe(fds, 1, 1);
@@ -238,8 +238,9 @@ static int winch_tramp(int fd, struct tty_port *port, int *fd_out,
* problem with /dev/net/tun, which if held open by this
* thread, prevents the TUN/TAP device from being reused.
*/
- err = run_helper_thread(winch_thread, &data, CLONE_FILES, stack_out);
- if (err < 0) {
+ pid = run_helper_thread(winch_thread, &data, CLONE_FILES, stack_out);
+ if (pid < 0) {
+ err = pid;
printk(UM_KERN_ERR "fork of winch_thread failed - errno = %d\n",
-err);
goto out_close;
@@ -263,7 +264,7 @@ static int winch_tramp(int fd, struct tty_port *port, int *fd_out,
goto out_close;
}
- return err;
+ return pid;
out_close:
close(fds[1]);
diff --git a/arch/um/drivers/daemon_kern.c b/arch/um/drivers/daemon_kern.c
index fd2402669c49..afde1e82c056 100644
--- a/arch/um/drivers/daemon_kern.c
+++ b/arch/um/drivers/daemon_kern.c
@@ -65,7 +65,7 @@ static int daemon_setup(char *str, char **mac_out, void *data)
*init = ((struct daemon_init)
{ .sock_type = "unix",
- .ctl_sock = "/tmp/uml.ctl" });
+ .ctl_sock = CONFIG_UML_NET_DAEMON_DEFAULT_SOCK });
remain = split_if_spec(str, mac_out, &init->sock_type, &init->ctl_sock,
NULL);
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 8febf95da96e..02b0befd6763 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -139,7 +139,7 @@ static int flush_buffer(struct line *line)
count = line->buffer + LINE_BUFSIZE - line->head;
n = write_chan(line->chan_out, line->head, count,
- line->driver->write_irq);
+ line->write_irq);
if (n < 0)
return n;
if (n == count) {
@@ -156,7 +156,7 @@ static int flush_buffer(struct line *line)
count = line->tail - line->head;
n = write_chan(line->chan_out, line->head, count,
- line->driver->write_irq);
+ line->write_irq);
if (n < 0)
return n;
@@ -195,7 +195,7 @@ int line_write(struct tty_struct *tty, const unsigned char *buf, int len)
ret = buffer_data(line, buf, len);
else {
n = write_chan(line->chan_out, buf, len,
- line->driver->write_irq);
+ line->write_irq);
if (n < 0) {
ret = n;
goto out_up;
@@ -215,7 +215,7 @@ void line_throttle(struct tty_struct *tty)
{
struct line *line = tty->driver_data;
- deactivate_chan(line->chan_in, line->driver->read_irq);
+ deactivate_chan(line->chan_in, line->read_irq);
line->throttled = 1;
}
@@ -224,7 +224,7 @@ void line_unthrottle(struct tty_struct *tty)
struct line *line = tty->driver_data;
line->throttled = 0;
- chan_interrupt(line, line->driver->read_irq);
+ chan_interrupt(line, line->read_irq);
}
static irqreturn_t line_write_interrupt(int irq, void *data)
@@ -260,19 +260,23 @@ int line_setup_irq(int fd, int input, int output, struct line *line, void *data)
int err;
if (input) {
- err = um_request_irq(driver->read_irq, fd, IRQ_READ,
- line_interrupt, IRQF_SHARED,
+ err = um_request_irq(UM_IRQ_ALLOC, fd, IRQ_READ,
+ line_interrupt, 0,
driver->read_irq_name, data);
if (err < 0)
return err;
+
+ line->read_irq = err;
}
if (output) {
- err = um_request_irq(driver->write_irq, fd, IRQ_WRITE,
- line_write_interrupt, IRQF_SHARED,
+ err = um_request_irq(UM_IRQ_ALLOC, fd, IRQ_WRITE,
+ line_write_interrupt, 0,
driver->write_irq_name, data);
if (err < 0)
return err;
+
+ line->write_irq = err;
}
return 0;
diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
index bdb16b96e76f..f15be75a3bf3 100644
--- a/arch/um/drivers/line.h
+++ b/arch/um/drivers/line.h
@@ -23,9 +23,7 @@ struct line_driver {
const short minor_start;
const short type;
const short subtype;
- const int read_irq;
const char *read_irq_name;
- const int write_irq;
const char *write_irq_name;
struct mc_device mc;
struct tty_driver *driver;
@@ -35,6 +33,8 @@ struct line {
struct tty_port port;
int valid;
+ int read_irq, write_irq;
+
char *init_str;
struct list_head chan_list;
struct chan *chan_in, *chan_out;
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 6ead1e240457..5026e7b9adfe 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -224,7 +224,7 @@ void mconsole_go(struct mc_request *req)
void mconsole_stop(struct mc_request *req)
{
- deactivate_fd(req->originating_fd, MCONSOLE_IRQ);
+ block_signals();
os_set_fd_block(req->originating_fd, 1);
mconsole_reply(req, "stopped", 0, 0);
for (;;) {
@@ -247,6 +247,7 @@ void mconsole_stop(struct mc_request *req)
}
os_set_fd_block(req->originating_fd, 0);
mconsole_reply(req, "", 0, 0);
+ unblock_signals();
}
static DEFINE_SPINLOCK(mc_devices_lock);
@@ -282,7 +283,7 @@ struct unplugged_pages {
};
static DEFINE_MUTEX(plug_mem_mutex);
-static unsigned long long unplugged_pages_count = 0;
+static unsigned long long unplugged_pages_count;
static LIST_HEAD(unplugged_pages);
static int unplug_index = UNPLUGGED_PER_PAGE;
@@ -845,13 +846,12 @@ static int notify_panic(struct notifier_block *self, unsigned long unused1,
mconsole_notify(notify_socket, MCONSOLE_PANIC, message,
strlen(message) + 1);
- return 0;
+ return NOTIFY_DONE;
}
static struct notifier_block panic_exit_notifier = {
- .notifier_call = notify_panic,
- .next = NULL,
- .priority = 1
+ .notifier_call = notify_panic,
+ .priority = INT_MAX, /* run as soon as possible */
};
static int add_notifier(void)
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index 0bf78ff89011..807cd3358740 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -122,7 +122,7 @@ static int __init mmapper_init(void)
return 0;
}
-static void mmapper_exit(void)
+static void __exit mmapper_exit(void)
{
misc_deregister(&mmapper_dev);
}
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 59331384c2d3..3d7836c46507 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -265,7 +265,7 @@ static void uml_net_poll_controller(struct net_device *dev)
static void uml_net_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
- strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
+ strscpy(info->driver, DRIVER_NAME, sizeof(info->driver));
}
static const struct ethtool_ops uml_net_ethtool_ops = {
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index 5b5b64cb1071..3c62ae81df62 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -5,6 +5,7 @@
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <errno.h>
#include <termios.h>
#include <unistd.h>
@@ -167,14 +168,29 @@ static void port_pre_exec(void *arg)
int port_connection(int fd, int *socket, int *pid_out)
{
int new, err;
- char *argv[] = { "/usr/sbin/in.telnetd", "-L",
+ char *env;
+ char *argv[] = { "in.telnetd", "-L",
OS_LIB_PATH "/uml/port-helper", NULL };
struct port_pre_exec_data data;
+ if ((env = getenv("UML_PORT_HELPER")))
+ argv[2] = env;
+
new = accept(fd, NULL, 0);
if (new < 0)
return -errno;
+ err = os_access(argv[2], X_OK);
+ if (err < 0) {
+ printk(UM_KERN_ERR "port_connection : error accessing port-helper "
+ "executable at %s: %s\n", argv[2], strerror(-err));
+ if (env == NULL)
+ printk(UM_KERN_ERR "Set UML_PORT_HELPER environment "
+ "variable to path to uml-utilities port-helper "
+ "binary\n");
+ goto out_close;
+ }
+
err = os_pipe(socket, 0, 0);
if (err < 0)
goto out_close;
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 433a3f8f2ef3..32b3341fe970 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -28,7 +28,7 @@
* protects against a module being loaded twice at the same time.
*/
static int random_fd = -1;
-static struct hwrng hwrng = { 0, };
+static struct hwrng hwrng;
static DECLARE_COMPLETION(have_data);
static int rng_dev_read(struct hwrng *rng, void *buf, size_t max, bool block)
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index 41eae2e8fb65..277cea3d30eb 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -47,9 +47,7 @@ static struct line_driver driver = {
.minor_start = 64,
.type = TTY_DRIVER_TYPE_SERIAL,
.subtype = 0,
- .read_irq = SSL_IRQ,
.read_irq_name = "ssl",
- .write_irq = SSL_WRITE_IRQ,
.write_irq_name = "ssl-write",
.mc = {
.list = LIST_HEAD_INIT(driver.mc.list),
@@ -108,7 +106,7 @@ static const struct tty_operations ssl_ops = {
/* Changed by ssl_init and referenced by ssl_exit, which are both serialized
* by being an initcall and exitcall, respectively.
*/
-static int ssl_init_done = 0;
+static int ssl_init_done;
static void ssl_console_write(struct console *c, const char *string,
unsigned len)
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index e8b762f4d8c2..1c239737d88e 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -53,9 +53,7 @@ static struct line_driver driver = {
.minor_start = 0,
.type = TTY_DRIVER_TYPE_CONSOLE,
.subtype = SYSTEM_TYPE_CONSOLE,
- .read_irq = CONSOLE_IRQ,
.read_irq_name = "console",
- .write_irq = CONSOLE_WRITE_IRQ,
.write_irq_name = "console-write",
.mc = {
.list = LIST_HEAD_INIT(driver.mc.list),
@@ -90,7 +88,7 @@ static int con_remove(int n, char **error_out)
}
/* Set in an initcall, checked in an exitcall */
-static int con_init_done = 0;
+static int con_init_done;
static int con_install(struct tty_driver *driver, struct tty_struct *tty)
{
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 69d2d0049a61..f4c1e6e97ad5 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -483,7 +483,6 @@ static void ubd_handler(void)
if ((io_req->error == BLK_STS_NOTSUPP) && (req_op(io_req->req) == REQ_OP_DISCARD)) {
blk_queue_max_discard_sectors(io_req->req->q, 0);
blk_queue_max_write_zeroes_sectors(io_req->req->q, 0);
- blk_queue_flag_clear(QUEUE_FLAG_DISCARD, io_req->req->q);
}
blk_mq_end_request(io_req->req, io_req->error);
kfree(io_req);
@@ -800,10 +799,8 @@ static int ubd_open_dev(struct ubd *ubd_dev)
}
if (ubd_dev->no_trim == 0) {
ubd_dev->queue->limits.discard_granularity = SECTOR_SIZE;
- ubd_dev->queue->limits.discard_alignment = SECTOR_SIZE;
blk_queue_max_discard_sectors(ubd_dev->queue, UBD_MAX_REQUEST);
blk_queue_max_write_zeroes_sectors(ubd_dev->queue, UBD_MAX_REQUEST);
- blk_queue_flag_set(QUEUE_FLAG_DISCARD, ubd_dev->queue);
}
blk_queue_flag_set(QUEUE_FLAG_NONROT, ubd_dev->queue);
return 0;
@@ -928,7 +925,7 @@ static int ubd_add(int n, char **error_out)
return 0;
out_cleanup_disk:
- blk_cleanup_disk(disk);
+ put_disk(disk);
out_cleanup_tags:
blk_mq_free_tag_set(&ubd_dev->tag_set);
out:
@@ -1035,7 +1032,7 @@ static int ubd_remove(int n, char **error_out)
ubd_gendisk[n] = NULL;
if(disk != NULL){
del_gendisk(disk);
- blk_cleanup_disk(disk);
+ put_disk(disk);
}
err = 0;
@@ -1265,7 +1262,7 @@ static void ubd_map_req(struct ubd *dev, struct io_thread_req *io_req,
struct req_iterator iter;
int i = 0;
unsigned long byte_offset = io_req->offset;
- int op = req_op(req);
+ enum req_op op = req_op(req);
if (op == REQ_OP_WRITE_ZEROES || op == REQ_OP_DISCARD) {
io_req->io_desc[0].buffer = NULL;
@@ -1328,7 +1325,7 @@ static int ubd_submit_request(struct ubd *dev, struct request *req)
int segs = 0;
struct io_thread_req *io_req;
int ret;
- int op = req_op(req);
+ enum req_op op = req_op(req);
if (op == REQ_OP_FLUSH)
segs = 0;
@@ -1526,13 +1523,19 @@ static void do_io(struct io_thread_req *req, struct io_desc *desc)
}
break;
case REQ_OP_DISCARD:
- case REQ_OP_WRITE_ZEROES:
n = os_falloc_punch(req->fds[bit], off, len);
if (n) {
req->error = map_error(-n);
return;
}
break;
+ case REQ_OP_WRITE_ZEROES:
+ n = os_falloc_zeroes(req->fds[bit], off, len);
+ if (n) {
+ req->error = map_error(-n);
+ return;
+ }
+ break;
default:
WARN_ON_ONCE(1);
req->error = BLK_STS_NOTSUPP;
@@ -1552,7 +1555,7 @@ static void do_io(struct io_thread_req *req, struct io_desc *desc)
int kernel_fd = -1;
/* Only changed by the io thread. XXX: currently unused. */
-static int io_count = 0;
+static int io_count;
int io_thread(void *arg)
{
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index cde6db184c26..ded7c47d2fbe 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -67,6 +67,7 @@ static LIST_HEAD(vector_devices);
static int driver_registered;
static void vector_eth_configure(int n, struct arglist *def);
+static int vector_mmsg_rx(struct vector_private *vp, int budget);
/* Argument accessors to set variables (and/or set default values)
* mtu, buffer sizing, default headroom, etc
@@ -77,7 +78,6 @@ static void vector_eth_configure(int n, struct arglist *def);
#define DEFAULT_VECTOR_SIZE 64
#define TX_SMALL_PACKET 128
#define MAX_IOV_SIZE (MAX_SKB_FRAGS + 1)
-#define MAX_ITERATIONS 64
static const struct {
const char string[ETH_GSTRING_LEN];
@@ -458,7 +458,6 @@ static int vector_send(struct vector_queue *qi)
vp->estats.tx_queue_running_average =
(vp->estats.tx_queue_running_average + result) >> 1;
}
- netif_trans_update(qi->dev);
netif_wake_queue(qi->dev);
/* if TX is busy, break out of the send loop,
* poll write IRQ will reschedule xmit for us
@@ -470,8 +469,6 @@ static int vector_send(struct vector_queue *qi)
}
}
spin_unlock(&qi->head_lock);
- } else {
- tasklet_schedule(&vp->tx_poll);
}
return queue_depth;
}
@@ -608,7 +605,7 @@ out_fail:
/*
* We do not use the RX queue as a proper wraparound queue for now
- * This is not necessary because the consumption via netif_rx()
+ * This is not necessary because the consumption via napi_gro_receive()
* happens in-line. While we can try using the return code of
* netif_rx() for flow control there are no drivers doing this today.
* For this RX specific use we ignore the tail/head locks and
@@ -896,7 +893,7 @@ static int vector_legacy_rx(struct vector_private *vp)
skb->protocol = eth_type_trans(skb, skb->dev);
vp->dev->stats.rx_bytes += skb->len;
vp->dev->stats.rx_packets++;
- netif_rx(skb);
+ napi_gro_receive(&vp->napi, skb);
} else {
dev_kfree_skb_irq(skb);
}
@@ -955,7 +952,7 @@ drop:
* mmsg vector matched to an skb vector which we prepared earlier.
*/
-static int vector_mmsg_rx(struct vector_private *vp)
+static int vector_mmsg_rx(struct vector_private *vp, int budget)
{
int packet_count, i;
struct vector_queue *qi = vp->rx_queue;
@@ -972,6 +969,9 @@ static int vector_mmsg_rx(struct vector_private *vp)
/* Fire the Lazy Gun - get as many packets as we can in one go. */
+ if (budget > qi->max_depth)
+ budget = qi->max_depth;
+
packet_count = uml_vector_recvmmsg(
vp->fds->rx_fd, qi->mmsg_vector, qi->max_depth, 0);
@@ -1021,7 +1021,7 @@ static int vector_mmsg_rx(struct vector_private *vp)
*/
vp->dev->stats.rx_bytes += skb->len;
vp->dev->stats.rx_packets++;
- netif_rx(skb);
+ napi_gro_receive(&vp->napi, skb);
} else {
/* Overlay header too short to do anything - discard.
* We can actually keep this skb and reuse it,
@@ -1044,23 +1044,6 @@ static int vector_mmsg_rx(struct vector_private *vp)
return packet_count;
}
-static void vector_rx(struct vector_private *vp)
-{
- int err;
- int iter = 0;
-
- if ((vp->options & VECTOR_RX) > 0)
- while (((err = vector_mmsg_rx(vp)) > 0) && (iter < MAX_ITERATIONS))
- iter++;
- else
- while (((err = vector_legacy_rx(vp)) > 0) && (iter < MAX_ITERATIONS))
- iter++;
- if ((err != 0) && net_ratelimit())
- netdev_err(vp->dev, "vector_rx: error(%d)\n", err);
- if (iter == MAX_ITERATIONS)
- netdev_err(vp->dev, "vector_rx: device stuck, remote end may have closed the connection\n");
-}
-
static int vector_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct vector_private *vp = netdev_priv(dev);
@@ -1085,25 +1068,15 @@ static int vector_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
netdev_sent_queue(vp->dev, skb->len);
queue_depth = vector_enqueue(vp->tx_queue, skb);
- /* if the device queue is full, stop the upper layers and
- * flush it.
- */
-
- if (queue_depth >= vp->tx_queue->max_depth - 1) {
- vp->estats.tx_kicks++;
- netif_stop_queue(dev);
- vector_send(vp->tx_queue);
- return NETDEV_TX_OK;
- }
- if (netdev_xmit_more()) {
+ if (queue_depth < vp->tx_queue->max_depth && netdev_xmit_more()) {
mod_timer(&vp->tl, vp->coalesce);
return NETDEV_TX_OK;
+ } else {
+ queue_depth = vector_send(vp->tx_queue);
+ if (queue_depth > 0)
+ napi_schedule(&vp->napi);
}
- if (skb->len < TX_SMALL_PACKET) {
- vp->estats.tx_kicks++;
- vector_send(vp->tx_queue);
- } else
- tasklet_schedule(&vp->tx_poll);
+
return NETDEV_TX_OK;
}
@@ -1114,7 +1087,7 @@ static irqreturn_t vector_rx_interrupt(int irq, void *dev_id)
if (!netif_running(dev))
return IRQ_NONE;
- vector_rx(vp);
+ napi_schedule(&vp->napi);
return IRQ_HANDLED;
}
@@ -1133,8 +1106,7 @@ static irqreturn_t vector_tx_interrupt(int irq, void *dev_id)
* tweaking the IRQ mask less costly
*/
- if (vp->in_write_poll)
- tasklet_schedule(&vp->tx_poll);
+ napi_schedule(&vp->napi);
return IRQ_HANDLED;
}
@@ -1161,7 +1133,8 @@ static int vector_net_close(struct net_device *dev)
um_free_irq(vp->tx_irq, dev);
vp->tx_irq = 0;
}
- tasklet_kill(&vp->tx_poll);
+ napi_disable(&vp->napi);
+ netif_napi_del(&vp->napi);
if (vp->fds->rx_fd > 0) {
if (vp->bpf)
uml_vector_detach_bpf(vp->fds->rx_fd, vp->bpf);
@@ -1193,15 +1166,32 @@ static int vector_net_close(struct net_device *dev)
return 0;
}
-/* TX tasklet */
-
-static void vector_tx_poll(struct tasklet_struct *t)
+static int vector_poll(struct napi_struct *napi, int budget)
{
- struct vector_private *vp = from_tasklet(vp, t, tx_poll);
+ struct vector_private *vp = container_of(napi, struct vector_private, napi);
+ int work_done = 0;
+ int err;
+ bool tx_enqueued = false;
- vp->estats.tx_kicks++;
- vector_send(vp->tx_queue);
+ if ((vp->options & VECTOR_TX) != 0)
+ tx_enqueued = (vector_send(vp->tx_queue) > 0);
+ if ((vp->options & VECTOR_RX) > 0)
+ err = vector_mmsg_rx(vp, budget);
+ else {
+ err = vector_legacy_rx(vp);
+ if (err > 0)
+ err = 1;
+ }
+ if (err > 0)
+ work_done += err;
+
+ if (tx_enqueued || err > 0)
+ napi_schedule(napi);
+ if (work_done < budget)
+ napi_complete_done(napi, work_done);
+ return work_done;
}
+
static void vector_reset_tx(struct work_struct *work)
{
struct vector_private *vp =
@@ -1265,6 +1255,10 @@ static int vector_net_open(struct net_device *dev)
goto out_close;
}
+ netif_napi_add_weight(vp->dev, &vp->napi, vector_poll,
+ get_depth(vp->parsed));
+ napi_enable(&vp->napi);
+
/* READ IRQ */
err = um_request_irq(
irq_rr + VECTOR_BASE_IRQ, vp->fds->rx_fd,
@@ -1306,15 +1300,15 @@ static int vector_net_open(struct net_device *dev)
uml_vector_attach_bpf(vp->fds->rx_fd, vp->bpf);
netif_start_queue(dev);
+ vector_reset_stats(vp);
/* clear buffer - it can happen that the host side of the interface
* is full when we get here. In this case, new data is never queued,
* SIGIOs never arrive, and the net never works.
*/
- vector_rx(vp);
+ napi_schedule(&vp->napi);
- vector_reset_stats(vp);
vdevice = find_device(vp->unit);
vdevice->opened = 1;
@@ -1378,7 +1372,7 @@ static void vector_net_poll_controller(struct net_device *dev)
static void vector_net_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
- strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
+ strscpy(info->driver, DRIVER_NAME, sizeof(info->driver));
}
static int vector_net_load_bpf_flash(struct net_device *dev,
@@ -1441,7 +1435,9 @@ flash_fail:
}
static void vector_get_ringparam(struct net_device *netdev,
- struct ethtool_ringparam *ring)
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kernel_ring,
+ struct netlink_ext_ack *extack)
{
struct vector_private *vp = netdev_priv(netdev);
@@ -1541,15 +1537,16 @@ static const struct net_device_ops vector_netdev_ops = {
#endif
};
-
static void vector_timer_expire(struct timer_list *t)
{
struct vector_private *vp = from_timer(vp, t, tl);
vp->estats.tx_kicks++;
- vector_send(vp->tx_queue);
+ napi_schedule(&vp->napi);
}
+
+
static void vector_eth_configure(
int n,
struct arglist *def
@@ -1632,7 +1629,6 @@ static void vector_eth_configure(
});
dev->features = dev->hw_features = (NETIF_F_SG | NETIF_F_FRAGLIST);
- tasklet_setup(&vp->tx_poll, vector_tx_poll);
INIT_WORK(&vp->reset_tx, vector_reset_tx);
timer_setup(&vp->tl, vector_timer_expire, 0);
diff --git a/arch/um/drivers/vector_kern.h b/arch/um/drivers/vector_kern.h
index 8fff93a75a92..2a1fa8e0f3e1 100644
--- a/arch/um/drivers/vector_kern.h
+++ b/arch/um/drivers/vector_kern.h
@@ -14,6 +14,7 @@
#include <linux/ctype.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
+
#include "vector_user.h"
/* Queue structure specially adapted for multiple enqueue/dequeue
@@ -72,6 +73,7 @@ struct vector_private {
struct list_head list;
spinlock_t lock;
struct net_device *dev;
+ struct napi_struct napi ____cacheline_aligned;
int unit;
@@ -115,7 +117,6 @@ struct vector_private {
spinlock_t stats_lock;
- struct tasklet_struct tx_poll;
bool rexmit_scheduled;
bool opened;
bool in_write_poll;
diff --git a/arch/um/drivers/vector_user.c b/arch/um/drivers/vector_user.c
index e4ffeb9a1fa4..c650e428432b 100644
--- a/arch/um/drivers/vector_user.c
+++ b/arch/um/drivers/vector_user.c
@@ -771,7 +771,7 @@ int uml_vector_detach_bpf(int fd, void *bpf)
printk(KERN_ERR BPF_DETACH_FAIL, prog->len, prog->filter, fd, -errno);
return err;
}
-void *uml_vector_default_bpf(void *mac)
+void *uml_vector_default_bpf(const void *mac)
{
struct sock_filter *bpf;
uint32_t *mac1 = (uint32_t *)(mac + 2);
diff --git a/arch/um/drivers/vector_user.h b/arch/um/drivers/vector_user.h
index d29d5fdd98fa..3a73d17a0161 100644
--- a/arch/um/drivers/vector_user.h
+++ b/arch/um/drivers/vector_user.h
@@ -97,7 +97,7 @@ extern int uml_vector_recvmmsg(
unsigned int vlen,
unsigned int flags
);
-extern void *uml_vector_default_bpf(void *mac);
+extern void *uml_vector_default_bpf(const void *mac);
extern void *uml_vector_user_bpf(char *filename);
extern int uml_vector_attach_bpf(int fd, void *bpf);
extern int uml_vector_detach_bpf(int fd, void *bpf);
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c
index c08066633023..acb55b302b14 100644
--- a/arch/um/drivers/virt-pci.c
+++ b/arch/um/drivers/virt-pci.c
@@ -181,15 +181,15 @@ static unsigned long um_pci_cfgspace_read(void *priv, unsigned int offset,
/* buf->data is maximum size - we may only use parts of it */
struct um_pci_message_buffer *buf;
u8 *data;
- unsigned long ret = ~0ULL;
+ unsigned long ret = ULONG_MAX;
if (!dev)
- return ~0ULL;
+ return ULONG_MAX;
buf = get_cpu_var(um_pci_msg_bufs);
data = buf->data;
- memset(data, 0xff, sizeof(data));
+ memset(buf->data, 0xff, sizeof(buf->data));
switch (size) {
case 1:
@@ -304,7 +304,7 @@ static unsigned long um_pci_bar_read(void *priv, unsigned int offset,
/* buf->data is maximum size - we may only use parts of it */
struct um_pci_message_buffer *buf;
u8 *data;
- unsigned long ret = ~0ULL;
+ unsigned long ret = ULONG_MAX;
buf = get_cpu_var(um_pci_msg_bufs);
data = buf->data;
@@ -544,6 +544,8 @@ static int um_pci_init_vqs(struct um_pci_device *dev)
dev->cmd_vq = vqs[0];
dev->irq_vq = vqs[1];
+ virtio_device_ready(dev->vdev);
+
for (i = 0; i < NUM_IRQ_MSGS; i++) {
void *msg = kzalloc(MAX_IRQ_MSG_SIZE, GFP_KERNEL);
@@ -587,7 +589,7 @@ static int um_pci_virtio_probe(struct virtio_device *vdev)
dev->irq = irq_alloc_desc(numa_node_id());
if (dev->irq < 0) {
err = dev->irq;
- goto error;
+ goto err_reset;
}
um_pci_devices[free].dev = dev;
vdev->priv = dev;
@@ -604,6 +606,9 @@ static int um_pci_virtio_probe(struct virtio_device *vdev)
um_pci_rescan();
return 0;
+err_reset:
+ virtio_reset_device(vdev);
+ vdev->config->del_vqs(vdev);
error:
mutex_unlock(&um_pci_mtx);
kfree(dev);
@@ -616,7 +621,7 @@ static void um_pci_virtio_remove(struct virtio_device *vdev)
int i;
/* Stop all virtqueues */
- vdev->config->reset(vdev);
+ virtio_reset_device(vdev);
vdev->config->del_vqs(vdev);
device_set_wakeup_enable(&vdev->dev, false);
@@ -852,7 +857,7 @@ void *pci_root_bus_fwnode(struct pci_bus *bus)
return um_pci_fwnode;
}
-static int um_pci_init(void)
+static int __init um_pci_init(void)
{
int err, i;
@@ -935,7 +940,7 @@ free:
}
module_init(um_pci_init);
-static void um_pci_exit(void)
+static void __exit um_pci_exit(void)
{
unregister_virtio_driver(&um_pci_virtio_driver);
irq_domain_remove(um_pci_msi_domain);
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index d51e445df797..588930a0ced1 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -21,6 +21,7 @@
* Based on Virtio MMIO driver by Pawel Moll, copyright 2011-2014, ARM Ltd.
*/
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/virtio.h>
@@ -49,6 +50,7 @@ struct virtio_uml_platform_data {
struct virtio_uml_device {
struct virtio_device vdev;
struct platform_device *pdev;
+ struct virtio_uml_platform_data *pdata;
spinlock_t sock_lock;
int sock, req_fd, irq;
@@ -61,6 +63,7 @@ struct virtio_uml_device {
u8 config_changed_irq:1;
uint64_t vq_irq_vq_map;
+ int recv_rc;
};
struct virtio_uml_vq_info {
@@ -146,14 +149,6 @@ static int vhost_user_recv(struct virtio_uml_device *vu_dev,
rc = vhost_user_recv_header(fd, msg);
- if (rc == -ECONNRESET && vu_dev->registered) {
- struct virtio_uml_platform_data *pdata;
-
- pdata = vu_dev->pdev->dev.platform_data;
-
- virtio_break_device(&vu_dev->vdev);
- schedule_work(&pdata->conn_broken_wk);
- }
if (rc)
return rc;
size = msg->header.size;
@@ -162,6 +157,21 @@ static int vhost_user_recv(struct virtio_uml_device *vu_dev,
return full_read(fd, &msg->payload, size, false);
}
+static void vhost_user_check_reset(struct virtio_uml_device *vu_dev,
+ int rc)
+{
+ struct virtio_uml_platform_data *pdata = vu_dev->pdata;
+
+ if (rc != -ECONNRESET)
+ return;
+
+ if (!vu_dev->registered)
+ return;
+
+ virtio_break_device(&vu_dev->vdev);
+ schedule_work(&pdata->conn_broken_wk);
+}
+
static int vhost_user_recv_resp(struct virtio_uml_device *vu_dev,
struct vhost_user_msg *msg,
size_t max_payload_size)
@@ -169,8 +179,10 @@ static int vhost_user_recv_resp(struct virtio_uml_device *vu_dev,
int rc = vhost_user_recv(vu_dev, vu_dev->sock, msg,
max_payload_size, true);
- if (rc)
+ if (rc) {
+ vhost_user_check_reset(vu_dev, rc);
return rc;
+ }
if (msg->header.flags != (VHOST_USER_FLAG_REPLY | VHOST_USER_VERSION))
return -EPROTO;
@@ -362,44 +374,48 @@ static irqreturn_t vu_req_read_message(struct virtio_uml_device *vu_dev,
u8 extra_payload[512];
} msg;
int rc;
+ irqreturn_t irq_rc = IRQ_NONE;
- rc = vhost_user_recv_req(vu_dev, &msg.msg,
- sizeof(msg.msg.payload) +
- sizeof(msg.extra_payload));
-
- if (rc)
- return IRQ_NONE;
-
- switch (msg.msg.header.request) {
- case VHOST_USER_SLAVE_CONFIG_CHANGE_MSG:
- vu_dev->config_changed_irq = true;
- response = 0;
- break;
- case VHOST_USER_SLAVE_VRING_CALL:
- virtio_device_for_each_vq((&vu_dev->vdev), vq) {
- if (vq->index == msg.msg.payload.vring_state.index) {
- response = 0;
- vu_dev->vq_irq_vq_map |= BIT_ULL(vq->index);
- break;
+ while (1) {
+ rc = vhost_user_recv_req(vu_dev, &msg.msg,
+ sizeof(msg.msg.payload) +
+ sizeof(msg.extra_payload));
+ if (rc)
+ break;
+
+ switch (msg.msg.header.request) {
+ case VHOST_USER_SLAVE_CONFIG_CHANGE_MSG:
+ vu_dev->config_changed_irq = true;
+ response = 0;
+ break;
+ case VHOST_USER_SLAVE_VRING_CALL:
+ virtio_device_for_each_vq((&vu_dev->vdev), vq) {
+ if (vq->index == msg.msg.payload.vring_state.index) {
+ response = 0;
+ vu_dev->vq_irq_vq_map |= BIT_ULL(vq->index);
+ break;
+ }
}
+ break;
+ case VHOST_USER_SLAVE_IOTLB_MSG:
+ /* not supported - VIRTIO_F_ACCESS_PLATFORM */
+ case VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG:
+ /* not supported - VHOST_USER_PROTOCOL_F_HOST_NOTIFIER */
+ default:
+ vu_err(vu_dev, "unexpected slave request %d\n",
+ msg.msg.header.request);
}
- break;
- case VHOST_USER_SLAVE_IOTLB_MSG:
- /* not supported - VIRTIO_F_ACCESS_PLATFORM */
- case VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG:
- /* not supported - VHOST_USER_PROTOCOL_F_HOST_NOTIFIER */
- default:
- vu_err(vu_dev, "unexpected slave request %d\n",
- msg.msg.header.request);
- }
-
- if (ev && !vu_dev->suspended)
- time_travel_add_irq_event(ev);
- if (msg.msg.header.flags & VHOST_USER_FLAG_NEED_REPLY)
- vhost_user_reply(vu_dev, &msg.msg, response);
+ if (ev && !vu_dev->suspended)
+ time_travel_add_irq_event(ev);
- return IRQ_HANDLED;
+ if (msg.msg.header.flags & VHOST_USER_FLAG_NEED_REPLY)
+ vhost_user_reply(vu_dev, &msg.msg, response);
+ irq_rc = IRQ_HANDLED;
+ };
+ /* mask EAGAIN as we try non-blocking read until socket is empty */
+ vu_dev->recv_rc = (rc == -EAGAIN) ? 0 : rc;
+ return irq_rc;
}
static irqreturn_t vu_req_interrupt(int irq, void *data)
@@ -410,7 +426,9 @@ static irqreturn_t vu_req_interrupt(int irq, void *data)
if (!um_irq_timetravel_handler_used())
ret = vu_req_read_message(vu_dev, NULL);
- if (vu_dev->vq_irq_vq_map) {
+ if (vu_dev->recv_rc) {
+ vhost_user_check_reset(vu_dev, vu_dev->recv_rc);
+ } else if (vu_dev->vq_irq_vq_map) {
struct virtqueue *vq;
virtio_device_for_each_vq((&vu_dev->vdev), vq) {
@@ -943,6 +961,7 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev,
goto error_create;
}
vq->priv = info;
+ vq->num_max = num;
num = virtqueue_get_vring_size(vq);
if (vu_dev->protocol_features &
@@ -1090,6 +1109,8 @@ static void virtio_uml_release_dev(struct device *d)
container_of(d, struct virtio_device, dev);
struct virtio_uml_device *vu_dev = to_virtio_uml_device(vdev);
+ time_travel_propagate_time();
+
/* might not have been opened due to not negotiating the feature */
if (vu_dev->req_fd >= 0) {
um_free_irq(vu_dev->irq, vu_dev);
@@ -1113,21 +1134,63 @@ void virtio_uml_set_no_vq_suspend(struct virtio_device *vdev,
no_vq_suspend ? "dis" : "en");
}
+static void vu_of_conn_broken(struct work_struct *wk)
+{
+ /*
+ * We can't remove the device from the devicetree so the only thing we
+ * can do is warn.
+ */
+ WARN_ON(1);
+}
+
/* Platform device */
+static struct virtio_uml_platform_data *
+virtio_uml_create_pdata(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct virtio_uml_platform_data *pdata;
+ int ret;
+
+ if (!np)
+ return ERR_PTR(-EINVAL);
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_WORK(&pdata->conn_broken_wk, vu_of_conn_broken);
+ pdata->pdev = pdev;
+
+ ret = of_property_read_string(np, "socket-path", &pdata->socket_path);
+ if (ret)
+ return ERR_PTR(ret);
+
+ ret = of_property_read_u32(np, "virtio-device-id",
+ &pdata->virtio_device_id);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return pdata;
+}
+
static int virtio_uml_probe(struct platform_device *pdev)
{
struct virtio_uml_platform_data *pdata = pdev->dev.platform_data;
struct virtio_uml_device *vu_dev;
int rc;
- if (!pdata)
- return -EINVAL;
+ if (!pdata) {
+ pdata = virtio_uml_create_pdata(pdev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ }
vu_dev = kzalloc(sizeof(*vu_dev), GFP_KERNEL);
if (!vu_dev)
return -ENOMEM;
+ vu_dev->pdata = pdata;
vu_dev->vdev.dev.parent = &pdev->dev;
vu_dev->vdev.dev.release = virtio_uml_release_dev;
vu_dev->vdev.config = &virtio_uml_config_ops;
@@ -1136,6 +1199,8 @@ static int virtio_uml_probe(struct platform_device *pdev)
vu_dev->pdev = pdev;
vu_dev->req_fd = -1;
+ time_travel_propagate_time();
+
do {
rc = os_connect_socket(pdata->socket_path);
} while (rc == -EINTR);
diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c
index 87ca4a47cd66..6918de5e2956 100644
--- a/arch/um/drivers/xterm.c
+++ b/arch/um/drivers/xterm.c
@@ -42,7 +42,7 @@ static void *xterm_init(char *str, int device, const struct chan_opts *opts)
}
/* Only changed by xterm_setup, which is a setup */
-static char *terminal_emulator = "xterm";
+static char *terminal_emulator = CONFIG_XTERM_CHAN_DEFAULT_EMULATOR;
static char *title_switch = "-T";
static char *exec_switch = "-e";
@@ -79,8 +79,9 @@ __uml_setup("xterm=", xterm_setup,
" respectively. The title switch must have the form '<switch> title',\n"
" not '<switch>=title'. Similarly, the exec switch must have the form\n"
" '<switch> command arg1 arg2 ...'.\n"
-" The default values are 'xterm=xterm,-T,-e'. Values for gnome-terminal\n"
-" are 'xterm=gnome-terminal,-t,-x'.\n\n"
+" The default values are 'xterm=" CONFIG_XTERM_CHAN_DEFAULT_EMULATOR
+ ",-T,-e'.\n"
+" Values for gnome-terminal are 'xterm=gnome-terminal,-t,-x'.\n\n"
);
static int xterm_open(int input, int output, int primary, void *d,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.