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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-28 11:17:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-28 11:17:30 -0700 |
| commit | 81eef8909d171bdca6af37028a11a24e011ed312 (patch) | |
| tree | daf29a77666fa7ba1876cf3cba5104002e96ab85 /include | |
| parent | e62e26d3e9ab89a0d40f94b237676b7e540d6d5c (diff) | |
| parent | c04e9894846c663f3278a414f34416e6e45bbe68 (diff) | |
| download | lwn-81eef8909d171bdca6af37028a11a24e011ed312.tar.gz lwn-81eef8909d171bdca6af37028a11a24e011ed312.zip | |
Merge tag 'for-linus-6.5a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- A fix for a performance problem in QubesOS, adding a way to drain the
queue of grants experiencing delayed unmaps faster
- A patch enabling the use of static event channels from user mode,
which was omitted when introducing supporting static event channels
- A fix for a problem where Xen related code didn't check properly for
running in a Xen environment, resulting in a WARN splat
* tag 'for-linus-6.5a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: speed up grant-table reclaim
xen/evtchn: Introduce new IOCTL to bind static evtchn
xenbus: check xen_domain in xenbus_probe_initcall
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/xen/evtchn.h | 9 | ||||
| -rw-r--r-- | include/xen/events.h | 11 |
2 files changed, 19 insertions, 1 deletions
diff --git a/include/uapi/xen/evtchn.h b/include/uapi/xen/evtchn.h index 7fbf732f168f..aef2b75f3413 100644 --- a/include/uapi/xen/evtchn.h +++ b/include/uapi/xen/evtchn.h @@ -101,4 +101,13 @@ struct ioctl_evtchn_restrict_domid { domid_t domid; }; +/* + * Bind statically allocated @port. + */ +#define IOCTL_EVTCHN_BIND_STATIC \ + _IOC(_IOC_NONE, 'E', 7, sizeof(struct ioctl_evtchn_bind)) +struct ioctl_evtchn_bind { + unsigned int port; +}; + #endif /* __LINUX_PUBLIC_EVTCHN_H__ */ diff --git a/include/xen/events.h b/include/xen/events.h index ac1281c5ead6..95970a2f7695 100644 --- a/include/xen/events.h +++ b/include/xen/events.h @@ -69,7 +69,7 @@ int xen_set_irq_priority(unsigned irq, unsigned priority); /* * Allow extra references to event channels exposed to userspace by evtchn */ -int evtchn_make_refcounted(evtchn_port_t evtchn); +int evtchn_make_refcounted(evtchn_port_t evtchn, bool is_static); int evtchn_get(evtchn_port_t evtchn); void evtchn_put(evtchn_port_t evtchn); @@ -141,4 +141,13 @@ void xen_init_IRQ(void); irqreturn_t xen_debug_interrupt(int irq, void *dev_id); +static inline void xen_evtchn_close(evtchn_port_t port) +{ + struct evtchn_close close; + + close.port = port; + if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0) + BUG(); +} + #endif /* _XEN_EVENTS_H */ |