Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/xen/events.h b/include/xen/events.h
index c0e6a05..3195230 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -14,11 +14,16 @@
unsigned xen_evtchn_nr_channels(void);
-int bind_evtchn_to_irq(unsigned int evtchn);
-int bind_evtchn_to_irqhandler(unsigned int evtchn,
+int bind_evtchn_to_irq(evtchn_port_t evtchn);
+int bind_evtchn_to_irq_lateeoi(evtchn_port_t evtchn);
+int bind_evtchn_to_irqhandler(evtchn_port_t evtchn,
irq_handler_t handler,
unsigned long irqflags, const char *devname,
void *dev_id);
+int bind_evtchn_to_irqhandler_lateeoi(evtchn_port_t evtchn,
+ irq_handler_t handler,
+ unsigned long irqflags, const char *devname,
+ void *dev_id);
int bind_virq_to_irq(unsigned int virq, unsigned int cpu, bool percpu);
int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
irq_handler_t handler,
@@ -31,13 +36,21 @@
const char *devname,
void *dev_id);
int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
- unsigned int remote_port);
+ evtchn_port_t remote_port);
+int bind_interdomain_evtchn_to_irq_lateeoi(unsigned int remote_domain,
+ evtchn_port_t remote_port);
int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
- unsigned int remote_port,
+ evtchn_port_t remote_port,
irq_handler_t handler,
unsigned long irqflags,
const char *devname,
void *dev_id);
+int bind_interdomain_evtchn_to_irqhandler_lateeoi(unsigned int remote_domain,
+ evtchn_port_t remote_port,
+ irq_handler_t handler,
+ unsigned long irqflags,
+ const char *devname,
+ void *dev_id);
/*
* Common unbind function for all event sources. Takes IRQ to unbind from.
@@ -46,6 +59,14 @@
*/
void unbind_from_irqhandler(unsigned int irq, void *dev_id);
+/*
+ * Send late EOI for an IRQ bound to an event channel via one of the *_lateeoi
+ * functions above.
+ */
+void xen_irq_lateeoi(unsigned int irq, unsigned int eoi_flags);
+/* Signal an event was spurious, i.e. there was no action resulting from it. */
+#define XEN_EOI_FLAG_SPURIOUS 0x00000001
+
#define XEN_IRQ_PRIORITY_MAX EVTCHN_FIFO_PRIORITY_MAX
#define XEN_IRQ_PRIORITY_DEFAULT EVTCHN_FIFO_PRIORITY_DEFAULT
#define XEN_IRQ_PRIORITY_MIN EVTCHN_FIFO_PRIORITY_MIN
diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h
index 9bc5bc0..a997835 100644
--- a/include/xen/grant_table.h
+++ b/include/xen/grant_table.h
@@ -157,6 +157,7 @@
map->flags = flags;
map->ref = ref;
map->dom = domid;
+ map->status = 1; /* arbitrary positive value */
}
static inline void
diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h
index 869c816..14d47ed 100644
--- a/include/xen/xenbus.h
+++ b/include/xen/xenbus.h
@@ -59,6 +59,15 @@
/* Path being watched. */
const char *node;
+ unsigned int nr_pending;
+
+ /*
+ * Called just before enqueing new event while a spinlock is held.
+ * The event will be discarded if this callback returns false.
+ */
+ bool (*will_handle)(struct xenbus_watch *,
+ const char *path, const char *token);
+
/* Callback (executed in a process context with no locks held). */
void (*callback)(struct xenbus_watch *,
const char *path, const char *token);
@@ -178,8 +187,6 @@
struct work_struct;
-void xenbus_probe(struct work_struct *);
-
#define XENBUS_IS_ERR_READ(str) ({ \
if (!IS_ERR(str) && strlen(str) == 0) { \
kfree(str); \
@@ -192,10 +199,14 @@
int xenbus_watch_path(struct xenbus_device *dev, const char *path,
struct xenbus_watch *watch,
+ bool (*will_handle)(struct xenbus_watch *,
+ const char *, const char *),
void (*callback)(struct xenbus_watch *,
const char *, const char *));
-__printf(4, 5)
+__printf(5, 6)
int xenbus_watch_pathfmt(struct xenbus_device *dev, struct xenbus_watch *watch,
+ bool (*will_handle)(struct xenbus_watch *,
+ const char *, const char *),
void (*callback)(struct xenbus_watch *,
const char *, const char *),
const char *pathfmt, ...);