diff options
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/Makefile | 1 | ||||
| -rw-r--r-- | drivers/xen/balloon.c | 16 | ||||
| -rw-r--r-- | drivers/xen/efi.c | 1 | ||||
| -rw-r--r-- | drivers/xen/events/events_base.c | 30 | ||||
| -rw-r--r-- | drivers/xen/evtchn.c | 20 | ||||
| -rw-r--r-- | drivers/xen/gntdev.c | 2 | ||||
| -rw-r--r-- | drivers/xen/xen-scsiback.c | 11 |
7 files changed, 52 insertions, 29 deletions
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 9b7a35c9e51d..030e91b38e32 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -8,6 +8,7 @@ nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_features.o := $(nostackp) CFLAGS_efi.o += -fshort-wchar +LDFLAGS += $(call ld-option, --no-wchar-size-warning) dom0-$(CONFIG_PCI) += pci.o dom0-$(CONFIG_USB_SUPPORT) += dbgp.o diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 9781e0dd59d6..d46839f51e73 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -151,6 +151,8 @@ static DECLARE_WAIT_QUEUE_HEAD(balloon_wq); static void balloon_process(struct work_struct *work); static DECLARE_DELAYED_WORK(balloon_worker, balloon_process); +static void release_memory_resource(struct resource *resource); + /* When ballooning out (allocating memory to return to Xen) we don't really want the kernel to try too hard since that can trigger the oom killer. */ #define GFP_BALLOON \ @@ -267,6 +269,20 @@ static struct resource *additional_memory_resource(phys_addr_t size) return NULL; } +#ifdef CONFIG_SPARSEMEM + { + unsigned long limit = 1UL << (MAX_PHYSMEM_BITS - PAGE_SHIFT); + unsigned long pfn = res->start >> PAGE_SHIFT; + + if (pfn > limit) { + pr_err("New System RAM resource outside addressable RAM (%lu > %lu)\n", + pfn, limit); + release_memory_resource(res); + return NULL; + } + } +#endif + return res; } diff --git a/drivers/xen/efi.c b/drivers/xen/efi.c index be7e56a338e8..e9d2135445c1 100644 --- a/drivers/xen/efi.c +++ b/drivers/xen/efi.c @@ -316,7 +316,6 @@ static const struct efi efi_xen __initconst = { .get_next_high_mono_count = xen_efi_get_next_high_mono_count, .reset_system = NULL, /* Functionality provided by Xen. */ .set_virtual_address_map = NULL, /* Not used under Xen. */ - .memmap = NULL, /* Not used under Xen. */ .flags = 0 /* Initialized later. */ }; diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c index 488017a0806a..71d49a95f8c0 100644 --- a/drivers/xen/events/events_base.c +++ b/drivers/xen/events/events_base.c @@ -484,9 +484,20 @@ static void eoi_pirq(struct irq_data *data) struct physdev_eoi eoi = { .irq = pirq_from_irq(data->irq) }; int rc = 0; - irq_move_irq(data); + if (!VALID_EVTCHN(evtchn)) + return; - if (VALID_EVTCHN(evtchn)) + if (unlikely(irqd_is_setaffinity_pending(data)) && + likely(!irqd_irq_disabled(data))) { + int masked = test_and_set_mask(evtchn); + + clear_evtchn(evtchn); + + irq_move_masked_irq(data); + + if (!masked) + unmask_evtchn(evtchn); + } else clear_evtchn(evtchn); if (pirq_needs_eoi(data->irq)) { @@ -1357,9 +1368,20 @@ static void ack_dynirq(struct irq_data *data) { int evtchn = evtchn_from_irq(data->irq); - irq_move_irq(data); + if (!VALID_EVTCHN(evtchn)) + return; - if (VALID_EVTCHN(evtchn)) + if (unlikely(irqd_is_setaffinity_pending(data)) && + likely(!irqd_irq_disabled(data))) { + int masked = test_and_set_mask(evtchn); + + clear_evtchn(evtchn); + + irq_move_masked_irq(data); + + if (!masked) + unmask_evtchn(evtchn); + } else clear_evtchn(evtchn); } diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c index 38272ad24551..f4edd6df3df2 100644 --- a/drivers/xen/evtchn.c +++ b/drivers/xen/evtchn.c @@ -316,7 +316,6 @@ static int evtchn_resize_ring(struct per_user_data *u) { unsigned int new_size; evtchn_port_t *new_ring, *old_ring; - unsigned int p, c; /* * Ensure the ring is large enough to capture all possible @@ -346,20 +345,17 @@ static int evtchn_resize_ring(struct per_user_data *u) /* * Copy the old ring contents to the new ring. * - * If the ring contents crosses the end of the current ring, - * it needs to be copied in two chunks. + * To take care of wrapping, a full ring, and the new index + * pointing into the second half, simply copy the old contents + * twice. * * +---------+ +------------------+ - * |34567 12| -> | 1234567 | - * +-----p-c-+ +------------------+ + * |34567 12| -> |34567 1234567 12| + * +-----p-c-+ +-------c------p---+ */ - p = evtchn_ring_offset(u, u->ring_prod); - c = evtchn_ring_offset(u, u->ring_cons); - if (p < c) { - memcpy(new_ring + c, u->ring + c, (u->ring_size - c) * sizeof(*u->ring)); - memcpy(new_ring + u->ring_size, u->ring, p * sizeof(*u->ring)); - } else - memcpy(new_ring + c, u->ring + c, (p - c) * sizeof(*u->ring)); + memcpy(new_ring, old_ring, u->ring_size * sizeof(*u->ring)); + memcpy(new_ring + u->ring_size, old_ring, + u->ring_size * sizeof(*u->ring)); u->ring = new_ring; u->ring_size = new_size; diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index dc495383ad73..67939578cd6d 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -748,7 +748,7 @@ static long gntdev_ioctl_notify(struct gntdev_priv *priv, void __user *u) return rc; } -#define GNTDEV_COPY_BATCH 24 +#define GNTDEV_COPY_BATCH 16 struct gntdev_copy_batch { struct gnttab_copy ops[GNTDEV_COPY_BATCH]; diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index ff932624eaad..d6950e0802b7 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -1399,15 +1399,6 @@ static void scsiback_release_cmd(struct se_cmd *se_cmd) percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag); } -static int scsiback_shutdown_session(struct se_session *se_sess) -{ - return 0; -} - -static void scsiback_close_session(struct se_session *se_sess) -{ -} - static u32 scsiback_sess_get_index(struct se_session *se_sess) { return 0; @@ -1841,8 +1832,6 @@ static const struct target_core_fabric_ops scsiback_ops = { .tpg_get_inst_index = scsiback_tpg_get_inst_index, .check_stop_free = scsiback_check_stop_free, .release_cmd = scsiback_release_cmd, - .shutdown_session = scsiback_shutdown_session, - .close_session = scsiback_close_session, .sess_get_index = scsiback_sess_get_index, .sess_get_initiator_sid = NULL, .write_pending = scsiback_write_pending, |
