diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 2 | ||||
| -rw-r--r-- | drivers/char/hvc_xen.c | 6 | ||||
| -rw-r--r-- | drivers/input/xen-kbdfront.c | 4 | ||||
| -rw-r--r-- | drivers/net/xen-netfront.c | 6 | ||||
| -rw-r--r-- | drivers/usb/host/ehci.h | 138 | ||||
| -rw-r--r-- | drivers/video/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/video/console/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/video/xen-fbfront.c | 4 | ||||
| -rw-r--r-- | drivers/xen/Makefile | 1 | ||||
| -rw-r--r-- | drivers/xen/balloon.c | 175 | ||||
| -rw-r--r-- | drivers/xen/cpu_hotplug.c | 90 | ||||
| -rw-r--r-- | drivers/xen/events.c | 40 | ||||
| -rw-r--r-- | drivers/xen/grant-table.c | 2 | ||||
| -rw-r--r-- | drivers/xen/xenbus/xenbus_probe.c | 8 |
14 files changed, 152 insertions, 342 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index bff602ccccf3..1a50ae70f716 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1066,7 +1066,7 @@ static struct xenbus_driver blkfront = { static int __init xlblk_init(void) { - if (!is_running_on_xen()) + if (!xen_domain()) return -ENODEV; if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) { diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c index 6b70aa66a587..538ceea5e7df 100644 --- a/drivers/char/hvc_xen.c +++ b/drivers/char/hvc_xen.c @@ -108,8 +108,8 @@ static int __init xen_init(void) { struct hvc_struct *hp; - if (!is_running_on_xen() || - is_initial_xendomain() || + if (!xen_pv_domain() || + xen_initial_domain() || !xen_start_info->console.domU.evtchn) return -ENODEV; @@ -142,7 +142,7 @@ static void __exit xen_fini(void) static int xen_cons_init(void) { - if (!is_running_on_xen()) + if (!xen_pv_domain()) return 0; hvc_instantiate(HVC_COOKIE, 0, &hvc_ops); diff --git a/drivers/input/xen-kbdfront.c b/drivers/input/xen-kbdfront.c index 9ce3b3baf3a2..3ab6362f043c 100644 --- a/drivers/input/xen-kbdfront.c +++ b/drivers/input/xen-kbdfront.c @@ -335,11 +335,11 @@ static struct xenbus_driver xenkbd = { static int __init xenkbd_init(void) { - if (!is_running_on_xen()) + if (!xen_domain()) return -ENODEV; /* Nothing to do if running in dom0. */ - if (is_initial_xendomain()) + if (xen_initial_domain()) return -ENODEV; return xenbus_register_frontend(&xenkbd); diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index c749bdba214c..3c3dd403f5dd 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -1794,10 +1794,10 @@ static struct xenbus_driver netfront = { static int __init netif_init(void) { - if (!is_running_on_xen()) + if (!xen_domain()) return -ENODEV; - if (is_initial_xendomain()) + if (xen_initial_domain()) return 0; printk(KERN_INFO "Initialising Xen virtual ethernet driver.\n"); @@ -1809,7 +1809,7 @@ module_init(netif_init); static void __exit netif_exit(void) { - if (is_initial_xendomain()) + if (xen_initial_domain()) return; xenbus_unregister_driver(&netfront); diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 5799298364fb..b697a13364ec 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -210,143 +210,7 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action) /*-------------------------------------------------------------------------*/ -/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */ - -/* Section 2.2 Host Controller Capability Registers */ -struct ehci_caps { - /* these fields are specified as 8 and 16 bit registers, - * but some hosts can't perform 8 or 16 bit PCI accesses. - */ - u32 hc_capbase; -#define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */ -#define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */ - u32 hcs_params; /* HCSPARAMS - offset 0x4 */ -#define HCS_DEBUG_PORT(p) (((p)>>20)&0xf) /* bits 23:20, debug port? */ -#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */ -#define HCS_N_CC(p) (((p)>>12)&0xf) /* bits 15:12, #companion HCs */ -#define HCS_N_PCC(p) (((p)>>8)&0xf) /* bits 11:8, ports per CC */ -#define HCS_PORTROUTED(p) ((p)&(1 << 7)) /* true: port routing */ -#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */ -#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ - - u32 hcc_params; /* HCCPARAMS - offset 0x8 */ -#define HCC_EXT_CAPS(p) (((p)>>8)&0xff) /* for pci extended caps */ -#define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */ -#define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */ -#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */ -#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/ -#define HCC_64BIT_ADDR(p) ((p)&(1)) /* true: can use 64-bit addr */ - u8 portroute [8]; /* nibbles for routing - offset 0xC */ -} __attribute__ ((packed)); - - -/* Section 2.3 Host Controller Operational Registers */ -struct ehci_regs { - - /* USBCMD: offset 0x00 */ - u32 command; -/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */ -#define CMD_PARK (1<<11) /* enable "park" on async qh */ -#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */ -#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */ -#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */ -#define CMD_ASE (1<<5) /* async schedule enable */ -#define CMD_PSE (1<<4) /* periodic schedule enable */ -/* 3:2 is periodic frame list size */ -#define CMD_RESET (1<<1) /* reset HC not bus */ -#define CMD_RUN (1<<0) /* start/stop HC */ - - /* USBSTS: offset 0x04 */ - u32 status; -#define STS_ASS (1<<15) /* Async Schedule Status */ -#define STS_PSS (1<<14) /* Periodic Schedule Status */ -#define STS_RECL (1<<13) /* Reclamation */ -#define STS_HALT (1<<12) /* Not running (any reason) */ -/* some bits reserved */ - /* these STS_* flags are also intr_enable bits (USBINTR) */ -#define STS_IAA (1<<5) /* Interrupted on async advance */ -#define STS_FATAL (1<<4) /* such as some PCI access errors */ -#define STS_FLR (1<<3) /* frame list rolled over */ -#define STS_PCD (1<<2) /* port change detect */ -#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */ -#define STS_INT (1<<0) /* "normal" completion (short, ...) */ - - /* USBINTR: offset 0x08 */ - u32 intr_enable; - - /* FRINDEX: offset 0x0C */ - u32 frame_index; /* current microframe number */ - /* CTRLDSSEGMENT: offset 0x10 */ - u32 segment; /* address bits 63:32 if needed */ - /* PERIODICLISTBASE: offset 0x14 */ - u32 frame_list; /* points to periodic list */ - /* ASYNCLISTADDR: offset 0x18 */ - u32 async_next; /* address of next async queue head */ - - u32 reserved [9]; - - /* CONFIGFLAG: offset 0x40 */ - u32 configured_flag; -#define FLAG_CF (1<<0) /* true: we'll support "high speed" */ - - /* PORTSC: offset 0x44 */ - u32 port_status [0]; /* up to N_PORTS */ -/* 31:23 reserved */ -#define PORT_WKOC_E (1<<22) /* wake on overcurrent (enable) */ -#define PORT_WKDISC_E (1<<21) /* wake on disconnect (enable) */ -#define PORT_WKCONN_E (1<<20) /* wake on connect (enable) */ -/* 19:16 for port testing */ -#define PORT_LED_OFF (0<<14) -#define PORT_LED_AMBER (1<<14) -#define PORT_LED_GREEN (2<<14) -#define PORT_LED_MASK (3<<14) -#define PORT_OWNER (1<<13) /* true: companion hc owns this port */ -#define PORT_POWER (1<<12) /* true: has power (see PPC) */ -#define PORT_USB11(x) (((x)&(3<<10))==(1<<10)) /* USB 1.1 device */ -/* 11:10 for detecting lowspeed devices (reset vs release ownership) */ -/* 9 reserved */ -#define PORT_RESET (1<<8) /* reset port */ -#define PORT_SUSPEND (1<<7) /* suspend port */ -#define PORT_RESUME (1<<6) /* resume it */ -#define PORT_OCC (1<<5) /* over current change */ -#define PORT_OC (1<<4) /* over current active */ -#define PORT_PEC (1<<3) /* port enable change */ -#define PORT_PE (1<<2) /* port enable */ -#define PORT_CSC (1<<1) /* connect status change */ -#define PORT_CONNECT (1<<0) /* device connected */ -#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC) -} __attribute__ ((packed)); - -#define USBMODE 0x68 /* USB Device mode */ -#define USBMODE_SDIS (1<<3) /* Stream disable */ -#define USBMODE_BE (1<<2) /* BE/LE endianness select */ -#define USBMODE_CM_HC (3<<0) /* host controller mode */ -#define USBMODE_CM_IDLE (0<<0) /* idle state */ - -/* Appendix C, Debug port ... intended for use with special "debug devices" - * that can help if there's no serial console. (nonstandard enumeration.) - */ -struct ehci_dbg_port { - u32 control; -#define DBGP_OWNER (1<<30) -#define DBGP_ENABLED (1<<28) -#define DBGP_DONE (1<<16) -#define DBGP_INUSE (1<<10) -#define DBGP_ERRCODE(x) (((x)>>7)&0x07) -# define DBGP_ERR_BAD 1 -# define DBGP_ERR_SIGNAL 2 -#define DBGP_ERROR (1<<6) -#define DBGP_GO (1<<5) -#define DBGP_OUT (1<<4) -#define DBGP_LEN(x) (((x)>>0)&0x0f) - u32 pids; -#define DBGP_PID_GET(x) (((x)>>16)&0xff) -#define DBGP_PID_SET(data,tok) (((data)<<8)|(tok)) - u32 data03; - u32 data47; - u32 address; -#define DBGP_EPADDR(dev,ep) (((dev)<<8)|(ep)) -} __attribute__ ((packed)); +#include <linux/usb/ehci_def.h> /*-------------------------------------------------------------------------*/ diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index d85a74c64b54..f79c2040758b 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -673,7 +673,6 @@ config FB_VESA select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT - select VIDEO_SELECT help This is the frame buffer device driver for generic VESA 2.0 compliant graphic cards. The older VESA 1.2 cards are not supported. @@ -1578,7 +1577,6 @@ config FB_CYBLA tristate "Cyberblade/i1 support" depends on FB && PCI && X86_32 && !64BIT select FB_CFB_IMAGEBLIT - select VIDEO_SELECT ---help--- This driver is supposed to support the Trident Cyberblade/i1 graphics core integrated in the VIA VT8601A North Bridge, diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig index 06f87b04f207..2f50a80b413e 100644 --- a/drivers/video/console/Kconfig +++ b/drivers/video/console/Kconfig @@ -43,22 +43,6 @@ config VGACON_SOFT_SCROLLBACK_SIZE buffer. Each 64KB will give you approximately 16 80x25 screenfuls of scrollback buffer -config VIDEO_SELECT - bool "Video mode selection support" - depends on X86 && VGA_CONSOLE - ---help--- - This enables support for text mode selection on kernel startup. If - you want to take advantage of some high-resolution text mode your - card's BIOS offers, but the traditional Linux utilities like - SVGATextMode don't, you can say Y here and set the mode using the - "vga=" option from your boot loader (lilo or loadlin) or set - "vga=ask" which brings up a video mode menu on kernel startup. (Try - "man bootparam" or see the documentation of your boot loader about - how to pass options to the kernel.) - - Read the file <file:Documentation/svga.txt> for more information - about the Video mode selection support. If unsure, say N. - config MDA_CONSOLE depends on !M68K && !PARISC && ISA tristate "MDA text console (dual-headed) (EXPERIMENTAL)" diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c index 47ed39b52f9c..a463b3dd837b 100644 --- a/drivers/video/xen-fbfront.c +++ b/drivers/video/xen-fbfront.c @@ -680,11 +680,11 @@ static struct xenbus_driver xenfb = { static int __init xenfb_init(void) { - if (!is_running_on_xen()) + if (!xen_domain()) return -ENODEV; /* Nothing to do if running in dom0. */ - if (is_initial_xendomain()) + if (xen_initial_domain()) return -ENODEV; return xenbus_register_frontend(&xenfb); diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 363286c54290..d2a8fdf0e191 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -1,4 +1,5 @@ obj-y += grant-table.o features.o events.o manage.o obj-y += xenbus/ +obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o obj-$(CONFIG_XEN_XENCOMM) += xencomm.o obj-$(CONFIG_XEN_BALLOON) += balloon.o diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 2e15da5459cf..8c83abc73400 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -53,7 +53,6 @@ #include <asm/tlb.h> #include <xen/interface/memory.h> -#include <xen/balloon.h> #include <xen/xenbus.h> #include <xen/features.h> #include <xen/page.h> @@ -226,9 +225,8 @@ static int increase_reservation(unsigned long nr_pages) } set_xen_guest_handle(reservation.extent_start, frame_list); - reservation.nr_extents = nr_pages; - rc = HYPERVISOR_memory_op( - XENMEM_populate_physmap, &reservation); + reservation.nr_extents = nr_pages; + rc = HYPERVISOR_memory_op(XENMEM_populate_physmap, &reservation); if (rc < nr_pages) { if (rc > 0) { int ret; @@ -236,7 +234,7 @@ static int increase_reservation(unsigned long nr_pages) /* We hit the Xen hard limit: reprobe. */ reservation.nr_extents = rc; ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation, - &reservation); + &reservation); BUG_ON(ret != rc); } if (rc >= 0) @@ -420,7 +418,7 @@ static int __init balloon_init(void) unsigned long pfn; struct page *page; - if (!is_running_on_xen()) + if (!xen_pv_domain()) return -ENODEV; pr_info("xen_balloon: Initialising balloon driver.\n"); @@ -464,136 +462,13 @@ static void balloon_exit(void) module_exit(balloon_exit); -static void balloon_update_driver_allowance(long delta) -{ - unsigned long flags; - - spin_lock_irqsave(&balloon_lock, flags); - balloon_stats.driver_pages += delta; - spin_unlock_irqrestore(&balloon_lock, flags); -} - -static int dealloc_pte_fn( - pte_t *pte, struct page *pmd_page, unsigned long addr, void *data) -{ - unsigned long mfn = pte_mfn(*pte); - int ret; - struct xen_memory_reservation reservation = { - .nr_extents = 1, - .extent_order = 0, - .domid = DOMID_SELF - }; - set_xen_guest_handle(reservation.extent_start, &mfn); - set_pte_at(&init_mm, addr, pte, __pte_ma(0ull)); - set_phys_to_machine(__pa(addr) >> PAGE_SHIFT, INVALID_P2M_ENTRY); - ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation, &reservation); - BUG_ON(ret != 1); - return 0; -} - -static struct page **alloc_empty_pages_and_pagevec(int nr_pages) -{ - unsigned long vaddr, flags; - struct page *page, **pagevec; - int i, ret; - - pagevec = kmalloc(sizeof(page) * nr_pages, GFP_KERNEL); - if (pagevec == NULL) - return NULL; - - for (i = 0; i < nr_pages; i++) { - page = pagevec[i] = alloc_page(GFP_KERNEL); - if (page == NULL) - goto err; - - vaddr = (unsigned long)page_address(page); - - scrub_page(page); - - spin_lock_irqsave(&balloon_lock, flags); - - if (xen_feature(XENFEAT_auto_translated_physmap)) { - unsigned long gmfn = page_to_pfn(page); - struct xen_memory_reservation reservation = { - .nr_extents = 1, - .extent_order = 0, - .domid = DOMID_SELF - }; - set_xen_guest_handle(reservation.extent_start, &gmfn); - ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation, - &reservation); - if (ret == 1) - ret = 0; /* success */ - } else { - ret = apply_to_page_range(&init_mm, vaddr, PAGE_SIZE, - dealloc_pte_fn, NULL); - } - - if (ret != 0) { - spin_unlock_irqrestore(&balloon_lock, flags); - __free_page(page); - goto err; - } - - totalram_pages = --balloon_stats.current_pages; - - spin_unlock_irqrestore(&balloon_lock, flags); - } - - out: - schedule_work(&balloon_worker); - flush_tlb_all(); - return pagevec; - - err: - spin_lock_irqsave(&balloon_lock, flags); - while (--i >= 0) - balloon_append(pagevec[i]); - spin_unlock_irqrestore(&balloon_lock, flags); - kfree(pagevec); - pagevec = NULL; - goto out; -} - -static void free_empty_pages_and_pagevec(struct page **pagevec, int nr_pages) -{ - unsigned long flags; - int i; - - if (pagevec == NULL) - return; - - spin_lock_irqsave(&balloon_lock, flags); - for (i = 0; i < nr_pages; i++) { - BUG_ON(page_count(pagevec[i]) != 1); - balloon_append(pagevec[i]); - } - spin_unlock_irqrestore(&balloon_lock, flags); - - kfree(pagevec); - - schedule_work(&balloon_worker); -} - -static void balloon_release_driver_page(struct page *page) -{ - unsigned long flags; - - spin_lock_irqsave(&balloon_lock, flags); - balloon_append(page); - balloon_stats.driver_pages--; - spin_unlock_irqrestore(&balloon_lock, flags); - - schedule_work(&balloon_worker); -} - - -#define BALLOON_SHOW(name, format, args...) \ - static ssize_t show_##name(struct sys_device *dev, \ - char *buf) \ - { \ - return sprintf(buf, format, ##args); \ - } \ +#define BALLOON_SHOW(name, format, args...) \ + static ssize_t show_##name(struct sys_device *dev, \ + struct sysdev_attribute *attr, \ + char *buf) \ + { \ + return sprintf(buf, format, ##args); \ + } \ static SYSDEV_ATTR(name, S_IRUGO, show_##name, NULL) BALLOON_SHOW(current_kb, "%lu\n", PAGES2KB(balloon_stats.current_pages)); @@ -604,7 +479,8 @@ BALLOON_SHOW(hard_limit_kb, (balloon_stats.hard_limit!=~0UL) ? PAGES2KB(balloon_stats.hard_limit) : 0); BALLOON_SHOW(driver_kb, "%lu\n", PAGES2KB(balloon_stats.driver_pages)); -static ssize_t show_target_kb(struct sys_device *dev, char *buf) +static ssize_t show_target_kb(struct sys_device *dev, struct sysdev_attribute *attr, + char *buf) { return sprintf(buf, "%lu\n", PAGES2KB(balloon_stats.target_pages)); } @@ -614,19 +490,14 @@ static ssize_t store_target_kb(struct sys_device *dev, const char *buf, size_t count) { - char memstring[64], *endchar; + char *endchar; unsigned long long target_bytes; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (count <= 1) - return -EBADMSG; /* runt */ - if (count > sizeof(memstring)) - return -EFBIG; /* too long */ - strcpy(memstring, buf); + target_bytes = memparse(buf, &endchar); - target_bytes = memparse(memstring, &endchar); balloon_set_new_target(target_bytes >> PAGE_SHIFT); return count; @@ -694,20 +565,4 @@ static int register_balloon(struct sys_device *sysdev) return error; } -static void unregister_balloon(struct sys_device *sysdev) -{ - int i; - - sysfs_remove_group(&sysdev->kobj, &balloon_info_group); - for (i = 0; i < ARRAY_SIZE(balloon_attrs); i++) - sysdev_remove_file(sysdev, balloon_attrs[i]); - sysdev_unregister(sysdev); - sysdev_class_unregister(&balloon_sysdev_class); -} - -static void balloon_sysfs_exit(void) -{ - unregister_balloon(&balloon_sysdev); -} - MODULE_LICENSE("GPL"); diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c new file mode 100644 index 000000000000..565280ec1c6a --- /dev/null +++ b/drivers/xen/cpu_hotplug.c @@ -0,0 +1,90 @@ +#include <linux/notifier.h> + +#include <xen/xenbus.h> + +#include <asm-x86/xen/hypervisor.h> +#include <asm/cpu.h> + +static void enable_hotplug_cpu(int cpu) +{ + if (!cpu_present(cpu)) + arch_register_cpu(cpu); + + cpu_set(cpu, cpu_present_map); +} + +static void disable_hotplug_cpu(int cpu) +{ + if (cpu_present(cpu)) + arch_unregister_cpu(cpu); + + cpu_clear(cpu, cpu_present_map); +} + +static void vcpu_hotplug(unsigned int cpu) +{ + int err; + char dir[32], state[32]; + + if (!cpu_possible(cpu)) + return; + + sprintf(dir, "cpu/%u", cpu); + err = xenbus_scanf(XBT_NIL, dir, "availability", "%s", state); + if (err != 1) { + printk(KERN_ERR "XENBUS: Unable to read cpu state\n"); + return; + } + + if (strcmp(state, "online") == 0) { + enable_hotplug_cpu(cpu); + } else if (strcmp(state, "offline") == 0) { + (void)cpu_down(cpu); + disable_hotplug_cpu(cpu); + } else { + printk(KERN_ERR "XENBUS: unknown state(%s) on CPU%d\n", + state, cpu); + } +} + +static void handle_vcpu_hotplug_event(struct xenbus_watch *watch, + const char **vec, unsigned int len) +{ + unsigned int cpu; + char *cpustr; + const char *node = vec[XS_WATCH_PATH]; + + cpustr = strstr(node, "cpu/"); + if (cpustr != NULL) { + sscanf(cpustr, "cpu/%u", &cpu); + vcpu_hotplug(cpu); + } +} + +static int setup_cpu_watcher(struct notifier_block *notifier, + unsigned long event, void *data) +{ + static struct xenbus_watch cpu_watch = { + .node = "cpu", + .callback = handle_vcpu_hotplug_event}; + + (void)register_xenbus_watch(&cpu_watch); + + return NOTIFY_DONE; +} + +static int __init setup_vcpu_hotplug_event(void) +{ + static struct notifier_block xsn_cpu = { + .notifier_call = setup_cpu_watcher }; + + if (!xen_pv_domain()) + return -ENODEV; + + register_xenstore_notifier(&xsn_cpu); + + return 0; +} + +arch_initcall(setup_vcpu_hotplug_event); + diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 0e0c28574af8..c3290bc186a0 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -84,17 +84,6 @@ static int irq_bindcount[NR_IRQS]; /* Xen will never allocate port zero for any purpose. */ #define VALID_EVTCHN(chn) ((chn) != 0) -/* - * Force a proper event-channel callback from Xen after clearing the - * callback mask. We do this in a very simple manner, by making a call - * down into Xen. The pending flag will be checked by Xen on return. - */ -void force_evtchn_callback(void) -{ - (void)HYPERVISOR_xen_version(0, NULL); -} -EXPORT_SYMBOL_GPL(force_evtchn_callback); - static struct irq_chip xen_dynamic_chip; /* Constructor for packed IRQ information. */ @@ -175,6 +164,12 @@ static inline void set_evtchn(int port) sync_set_bit(port, &s->evtchn_pending[0]); } +static inline int test_evtchn(int port) +{ + struct shared_info *s = HYPERVISOR_shared_info; + return sync_test_bit(port, &s->evtchn_pending[0]); +} + /** * notify_remote_via_irq - send event to remote end of event channel via irq @@ -365,6 +360,10 @@ static void unbind_from_irq(unsigned int irq) per_cpu(virq_to_irq, cpu_from_evtchn(evtchn)) [index_from_irq(irq)] = -1; break; + case IRQT_IPI: + per_cpu(ipi_to_irq, cpu_from_evtchn(evtchn)) + [index_from_irq(irq)] = -1; + break; default: break; } @@ -743,6 +742,25 @@ void xen_clear_irq_pending(int irq) clear_evtchn(evtchn); } +void xen_set_irq_pending(int irq) +{ + int evtchn = evtchn_from_irq(irq); + + if (VALID_EVTCHN(evtchn)) + set_evtchn(evtchn); +} + +bool xen_test_irq_pending(int irq) +{ + int evtchn = evtchn_from_irq(irq); + bool ret = false; + + if (VALID_EVTCHN(evtchn)) + ret = test_evtchn(evtchn); + + return ret; +} + /* Poll waiting for an irq to become pending. In the usual case, the irq will be disabled so it won't deliver an interrupt. */ void xen_poll_irq(int irq) diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index e9e11168616a..06592b9da83c 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -508,7 +508,7 @@ static int __devinit gnttab_init(void) unsigned int max_nr_glist_frames, nr_glist_frames; unsigned int nr_init_grefs; - if (!is_running_on_xen()) + if (!xen_domain()) return -ENODEV; nr_grant_frames = 1; diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 57ceb5346b74..7f24a98a446f 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -814,7 +814,7 @@ static int __init xenbus_probe_init(void) DPRINTK(""); err = -ENODEV; - if (!is_running_on_xen()) + if (!xen_domain()) goto out_error; /* Register ourselves with the kernel bus subsystem */ @@ -829,7 +829,7 @@ static int __init xenbus_probe_init(void) /* * Domain0 doesn't have a store_evtchn or store_mfn yet. */ - if (is_initial_xendomain()) { + if (xen_initial_domain()) { /* dom0 not yet supported */ } else { xenstored_ready = 1; @@ -846,7 +846,7 @@ static int __init xenbus_probe_init(void) goto out_unreg_back; } - if (!is_initial_xendomain()) + if (!xen_initial_domain()) xenbus_probe(NULL); return 0; @@ -937,7 +937,7 @@ static void wait_for_devices(struct xenbus_driver *xendrv) unsigned long timeout = jiffies + 10*HZ; struct device_driver *drv = xendrv ? &xendrv->driver : NULL; - if (!ready_to_wait_for_devices || !is_running_on_xen()) + if (!ready_to_wait_for_devices || !xen_domain()) return; while (exists_disconnected_device(drv)) { |