Displaying 4 results from an estimated 4 matches for "max_nr_hvc_consoles".
2020 Apr 05
0
[PATCH] Fix: buffer overflow during hvc_alloc().
...x)
- last_hvc = index;
-
/* check if we need to re-register the kernel console */
hvc_check_console(index);
@@ -960,13 +956,22 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,
cons_ops[i] == hp->ops)
break;
- /* no matching slot, just use a counter */
- if (i >= MAX_NR_HVC_CONSOLES)
- i = ++last_hvc;
+ if (i >= MAX_NR_HVC_CONSOLES) {
+
+ /* find 'empty' slot for console */
+ for (i = 0; i < MAX_NR_HVC_CONSOLES && vtermnos[i] != -1; i++) {
+ }
+
+ /* no matching slot, just use a counter */
+ if (i == MAX_NR_HVC_CONSOLES)
+ i = ++last_hvc + MAX_NR_...
2020 Apr 14
1
[PATCH v2] Fix: buffer overflow during hvc_alloc().
...x)
- last_hvc = index;
-
/* check if we need to re-register the kernel console */
hvc_check_console(index);
@@ -960,13 +956,22 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,
cons_ops[i] == hp->ops)
break;
- /* no matching slot, just use a counter */
- if (i >= MAX_NR_HVC_CONSOLES)
- i = ++last_hvc;
+ if (i >= MAX_NR_HVC_CONSOLES) {
+
+ /* find 'empty' slot for console */
+ for (i = 0; i < MAX_NR_HVC_CONSOLES && vtermnos[i] != -1; i++) {
+ }
+
+ /* no matching slot, just use a counter */
+ if (i == MAX_NR_HVC_CONSOLES)
+ i = ++last_hvc + MAX_NR_...
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