search for: put_char

Displaying 20 results from an estimated 111 matches for "put_char".

2009 Nov 10
2
virtio_console: support for multiple ports, console and generic.
Hey Rusty, This is the way I did the split; patches 1..7 are preparation for multiple ports. Patch 8 adds multiport support. It's the big one since we have to put the header in and retain support for multiple consoles and console resizing. Patch 9 adds port hotplug Patch 10 adds sysfs entries and 12 adds debugfs. Patches 13, 14 and 15 add throttling, caching and unplug features.
2009 Nov 10
2
virtio_console: support for multiple ports, console and generic.
Hey Rusty, This is the way I did the split; patches 1..7 are preparation for multiple ports. Patch 8 adds multiport support. It's the big one since we have to put the header in and retain support for multiple consoles and console resizing. Patch 9 adds port hotplug Patch 10 adds sysfs entries and 12 adds debugfs. Patches 13, 14 and 15 add throttling, caching and unplug features.
2010 Jan 18
2
[PATCH 00/32] virtio: console: Fixes, multiple devices and generic ports
Hey Rusty, In this version: - Assume only one inbuf; no input buffering for ports - Remove the START/END delimiters for outgoing buffers - Remove the header that was sent along with each buffer - Remove unused buffers in the vqs at port remove time - Send a guest port open message to the host when a console port is attached - Remove cached buffers when ports are closed / disconnected - Send
2010 Jan 18
2
[PATCH 00/32] virtio: console: Fixes, multiple devices and generic ports
Hey Rusty, In this version: - Assume only one inbuf; no input buffering for ports - Remove the START/END delimiters for outgoing buffers - Remove the header that was sent along with each buffer - Remove unused buffers in the vqs at port remove time - Send a guest port open message to the host when a console port is attached - Remove cached buffers when ports are closed / disconnected - Send
2009 Sep 29
0
[PATCH] virtio_console: fix put_chars after early-init
Christian tested the patch on s390 and found that the output was very slow. He tracked it down to put_chars never getting init'ed to the final value. Signed-off-by: Amit Shah <amit.shah at redhat.com> --- drivers/char/virtio_console.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 37513e8..59...
2009 Sep 29
0
[PATCH] virtio_console: fix put_chars after early-init
Christian tested the patch on s390 and found that the output was very slow. He tracked it down to put_chars never getting init'ed to the final value. Signed-off-by: Amit Shah <amit.shah at redhat.com> --- drivers/char/virtio_console.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 37513e8..59...
2009 Nov 28
3
[PATCH 00/28] virtio: console: Fixes, support for generic ports
Hey Rusty, This is a respin of my patches on top of the series you posted. I've taken the liberty to modify your patches for style consistency and comments where needed, keeping the authorship info intact. I've had to update a few of your patches for functional changes, I've changed the authorship info on those patches. The (only) major functional change is to have a list for ports
2009 Nov 28
3
[PATCH 00/28] virtio: console: Fixes, support for generic ports
Hey Rusty, This is a respin of my patches on top of the series you posted. I've taken the liberty to modify your patches for style consistency and comments where needed, keeping the authorship info intact. I've had to update a few of your patches for functional changes, I've changed the authorship info on those patches. The (only) major functional change is to have a list for ports
2017 Feb 01
3
[PATCH] virtio-console: avoid DMA from stack
From: Omar Sandoval <osandov at fb.com> put_chars() stuffs the buffer it gets into an sg, but that buffer may be on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it manifested as printks getting turned into NUL bytes). Signed-off-by: Omar Sandoval <osandov at fb.com> --- Patch based on v4.10-rc6. drivers/char/virtio_console.c...
2017 Feb 01
3
[PATCH] virtio-console: avoid DMA from stack
From: Omar Sandoval <osandov at fb.com> put_chars() stuffs the buffer it gets into an sg, but that buffer may be on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it manifested as printks getting turned into NUL bytes). Signed-off-by: Omar Sandoval <osandov at fb.com> --- Patch based on v4.10-rc6. drivers/char/virtio_console.c...
2009 Dec 22
4
[PATCH 00/31] virtio: console: Fixes, multiple devices and generic ports
Hey Rusty, This series adds support for generic ports with each port getting two vqs: one for input and one for output. The host notifies us via the config space of the max. number of ports that can be added for a particular device. As a result of that change, the buffer management for find_readbufs and send_bufs is moved to the vqs. Only one outbuf per port is used so we bide away some time in
2009 Dec 22
4
[PATCH 00/31] virtio: console: Fixes, multiple devices and generic ports
Hey Rusty, This series adds support for generic ports with each port getting two vqs: one for input and one for output. The host notifies us via the config space of the max. number of ports that can be added for a particular device. As a result of that change, the buffer management for find_readbufs and send_bufs is moved to the vqs. Only one outbuf per port is used so we bide away some time in
2012 Jun 07
7
[PATCH] xen/hvc: Fix polling mode to work with kdb/kgdb
...p->ops->get_chars(hp->vtermno, &ch, 1); + n = cons_ops[last_hvc]->get_chars(vtermnos[last_hvc], &ch, 1); if (n == 0) return NO_POLL_CHAR; @@ -781,12 +779,10 @@ static int hvc_poll_get_char(struct tty_driver *driver, int line) static void hvc_poll_put_char(struct tty_driver *driver, int line, char ch) { - struct tty_struct *tty = driver->ttys[0]; - struct hvc_struct *hp = tty->driver_data; int n; do { - n = hp->ops->put_chars(hp->vtermno, &ch, 1); + n = cons_ops[last_hvc]-&g...
2008 Jun 03
12
[RFC 0/3]: hvc_console rework for platform without hard irqs
This patch set if my first attempt to make virtio_console usable on s390. To do so, I had to change hvc_console, because s390 has no request_irq and no free_irq. I want to get feedback from the main users of hvc_console before I proceed. The basic idea of this patch set is to remove the calls to request_irq and free_irq and replace them with backend specific callbacks. Please see the
2008 Jun 03
12
[RFC 0/3]: hvc_console rework for platform without hard irqs
This patch set if my first attempt to make virtio_console usable on s390. To do so, I had to change hvc_console, because s390 has no request_irq and no free_irq. I want to get feedback from the main users of hvc_console before I proceed. The basic idea of this patch set is to remove the calls to request_irq and free_irq and replace them with backend specific callbacks. Please see the
2009 Sep 03
3
Multiple port support for virtio-console
Hello all, Here is a new iteration of the patch series that implements a transport for guest and host communications. I've tested for compatibility (old qemu & new kernel, new qemu & old kernel, new qemu & new kernel) and it all works fine*. There are a few items on my todo list but this works well. New since last send: - live migration support** - write path in the guest
2009 Sep 03
3
Multiple port support for virtio-console
Hello all, Here is a new iteration of the patch series that implements a transport for guest and host communications. I've tested for compatibility (old qemu & new kernel, new qemu & old kernel, new qemu & new kernel) and it all works fine*. There are a few items on my todo list but this works well. New since last send: - live migration support** - write path in the guest
2009 Oct 12
1
[PATCH v8 0/1] virtio_console: Add support for multiple console ports and generic serial ports
Hello all, Here is a new iteration of the patch series that implements a transport for guest and host communications. I've tested for compatibility (old qemu & new kernel, new qemu & old kernel, new qemu & new kernel) and it all works fine. To maintain backward compatibility, the first port to be spawned (port at id 0) is to be a console port, to be bound to hvc. This keeps new
2009 Oct 12
1
[PATCH v8 0/1] virtio_console: Add support for multiple console ports and generic serial ports
Hello all, Here is a new iteration of the patch series that implements a transport for guest and host communications. I've tested for compatibility (old qemu & new kernel, new qemu & old kernel, new qemu & new kernel) and it all works fine. To maintain backward compatibility, the first port to be spawned (port at id 0) is to be a console port, to be bound to hvc. This keeps new
2009 Sep 11
1
Multiple ports support for virtio_console; major number for dev
Hello, This is the patch that I have for adding support for multiple ports to virtio_console. It's pretty stable in my testing so far and the memory corruption that I had earlier has been resolved in linux-next so I'm proposing this for inclusion. This currently uses device major number 60 from the experimental range; Alan could you please reserve a new major number for virtio_console?