Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/x86/linux-2.6-x86

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: simplify "make ARCH=x86" and fix kconfig all.config
  x86: reboot fixup for wrap2c board
  x86: check boundary in count setup resource
  x86: fix reboot with no keyboard attached
  x86: add hpet sanity checks
  x86: on x86_64, correct reading of PC RTC when update in progress in time_64.c
  x86: fix freeze in x86_64 RTC update code in time_64.c
  ntp: fix typo that makes sync_cmos_clock erratic
  Remove x86 merge artifact from top Makefile
  x86: fixup cpu_info array conversion
  x86: show cpuinfo only for online CPUs
  x86: fix cpu-hotplug regression
  x86: ignore the sys_getcpu() tcache parameter
  x86: voyager use correct header file name
  x86: fix smp init sections
  x86: fix voyager_cat_init section
  x86: fix bogus memcpy in es7000_check_dsdt()

Makefile

@@ -1332,12 +1332,7 @@ else
 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
 endif
 
-# Take care of arch/x86
-ifeq ($(ARCH), $(SRCARCH))
-ALLSOURCE_ARCHS := $(ARCH)
-else
-ALLSOURCE_ARCHS := $(ARCH) $(SRCARCH)
-endif
+ALLSOURCE_ARCHS := $(SRCARCH)
 
 define find-sources
         ( for arch in $(ALLSOURCE_ARCHS) ; do \

arch/x86/kernel/acpi/boot.c

@@ -637,6 +637,38 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)
 	}
 
 	hpet_address = hpet_tbl->address.address;
+
+	/*
+	 * Some broken BIOSes advertise HPET at 0x0. We really do not
+	 * want to allocate a resource there.
+	 */
+	if (!hpet_address) {
+		printk(KERN_WARNING PREFIX
+		       "HPET id: %#x base: %#lx is invalid\n",
+		       hpet_tbl->id, hpet_address);
+		return 0;
+	}
+#ifdef CONFIG_X86_64
+	/*
+	 * Some even more broken BIOSes advertise HPET at
+	 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
+	 * some noise:
+	 */
+	if (hpet_address == 0xfed0000000000000UL) {
+		if (!hpet_force_user) {
+			printk(KERN_WARNING PREFIX "HPET id: %#x "
+			       "base: 0xfed0000000000000 is bogus\n "
+			       "try hpet=force on the kernel command line to "
+			       "fix it up to 0xfed00000.\n", hpet_tbl->id);
+			hpet_address = 0;
+			return 0;
+		}
+		printk(KERN_WARNING PREFIX
+		       "HPET id: %#x base: 0xfed0000000000000 fixed up "
+		       "to 0xfed00000.\n", hpet_tbl->id);
+		hpet_address >>= 32;
+	}
+#endif
 	printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
 	       hpet_tbl->id, hpet_address);
 

arch/x86/kernel/cpu/mcheck/mce_64.c

@@ -810,7 +810,7 @@ static __cpuinit int mce_create_device(unsigned int cpu)
 	int err;
 	int i;
 
-	if (!mce_available(&cpu_data(cpu)))
+	if (!mce_available(&boot_cpu_data))
 		return -EIO;
 
 	memset(&per_cpu(device_mce, cpu).kobj, 0, sizeof(struct kobject));

arch/x86/kernel/cpu/proc.c

@@ -89,8 +89,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	int fpu_exception;
 
 #ifdef CONFIG_SMP
-	if (!cpu_online(n))
-		return 0;
 	n = c->cpu_index;
 #endif
 	seq_printf(m, "processor\t: %d\n"
@@ -177,14 +175,14 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 static void *c_start(struct seq_file *m, loff_t *pos)
 {
 	if (*pos == 0)	/* just in case, cpu 0 is not the first */
-		*pos = first_cpu(cpu_possible_map);
-	if ((*pos) < NR_CPUS && cpu_possible(*pos))
+		*pos = first_cpu(cpu_online_map);
+	if ((*pos) < NR_CPUS && cpu_online(*pos))
 		return &cpu_data(*pos);
 	return NULL;
 }
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 {
-	*pos = next_cpu(*pos, cpu_possible_map);
+	*pos = next_cpu(*pos, cpu_online_map);
 	return c_start(m, pos);
 }
 static void c_stop(struct seq_file *m, void *v)

arch/x86/kernel/reboot_fixups_32.c

@@ -39,6 +39,7 @@ struct device_fixup {
 static struct device_fixup fixups_table[] = {
 { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, cs5536_warm_reset },
+{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE, cs5530a_warm_reset },
 };
 
 /*

arch/x86/kernel/setup_64.c

@@ -892,7 +892,6 @@ void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
 
 #ifdef CONFIG_SMP
 	c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
-	c->cpu_index = 0;
 #endif
 }
 
@@ -1078,8 +1077,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 
 
 #ifdef CONFIG_SMP
-	if (!cpu_online(c->cpu_index))
-		return 0;
 	cpu = c->cpu_index;
 #endif
 
@@ -1171,15 +1168,15 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 static void *c_start(struct seq_file *m, loff_t *pos)
 {
 	if (*pos == 0)	/* just in case, cpu 0 is not the first */
-		*pos = first_cpu(cpu_possible_map);
-	if ((*pos) < NR_CPUS && cpu_possible(*pos))
+		*pos = first_cpu(cpu_online_map);
+	if ((*pos) < NR_CPUS && cpu_online(*pos))
 		return &cpu_data(*pos);
 	return NULL;
 }
 
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 {
-	*pos = next_cpu(*pos, cpu_possible_map);
+	*pos = next_cpu(*pos, cpu_online_map);
 	return c_start(m, pos);
 }
 

arch/x86/kernel/time_64.c

@@ -82,18 +82,15 @@ static int set_rtc_mmss(unsigned long nowtime)
 	int retval = 0;
 	int real_seconds, real_minutes, cmos_minutes;
 	unsigned char control, freq_select;
+	unsigned long flags;
 
 /*
- * IRQs are disabled when we're called from the timer interrupt,
- * no need for spin_lock_irqsave()
+ * set_rtc_mmss is called when irqs are enabled, so disable irqs here
  */
-
-	spin_lock(&rtc_lock);
-
+	spin_lock_irqsave(&rtc_lock, flags);
 /*
  * Tell the clock it's being set and stop it.
  */
-
 	control = CMOS_READ(RTC_CONTROL);
 	CMOS_WRITE(control | RTC_SET, RTC_CONTROL);
 
@@ -138,7 +135,7 @@ static int set_rtc_mmss(unsigned long nowtime)
 	CMOS_WRITE(control, RTC_CONTROL);
 	CMOS_WRITE(freq_select, RTC_FREQ_SELECT);
 
-	spin_unlock(&rtc_lock);
+	spin_unlock_irqrestore(&rtc_lock, flags);
 
 	return retval;
 }
@@ -164,21 +161,27 @@ unsigned long read_persistent_clock(void)
 	unsigned century = 0;
 
 	spin_lock_irqsave(&rtc_lock, flags);
+	/*
+	 * if UIP is clear, then we have >= 244 microseconds before RTC
+	 * registers will be updated.  Spec sheet says that this is the
+	 * reliable way to read RTC - registers invalid (off bus) during update
+	 */
+	while ((CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
+		cpu_relax();
 
-	do {
-		sec = CMOS_READ(RTC_SECONDS);
-		min = CMOS_READ(RTC_MINUTES);
-		hour = CMOS_READ(RTC_HOURS);
-		day = CMOS_READ(RTC_DAY_OF_MONTH);
-		mon = CMOS_READ(RTC_MONTH);
-		year = CMOS_READ(RTC_YEAR);
+
+	/* now read all RTC registers while stable with interrupts disabled */
+	sec = CMOS_READ(RTC_SECONDS);
+	min = CMOS_READ(RTC_MINUTES);
+	hour = CMOS_READ(RTC_HOURS);
+	day = CMOS_READ(RTC_DAY_OF_MONTH);
+	mon = CMOS_READ(RTC_MONTH);
+	year = CMOS_READ(RTC_YEAR);
 #ifdef CONFIG_ACPI
-		if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
-					acpi_gbl_FADT.century)
-			century = CMOS_READ(acpi_gbl_FADT.century);
+	if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+				acpi_gbl_FADT.century)
+		century = CMOS_READ(acpi_gbl_FADT.century);
 #endif
-	} while (sec != CMOS_READ(RTC_SECONDS));
-
 	spin_unlock_irqrestore(&rtc_lock, flags);
 
 	/*

arch/x86/mach-voyager/voyager_cat.c

@@ -568,7 +568,7 @@ static voyager_module_t *voyager_initial_module;
  * boot cpu *after* all memory initialisation has been done (so we can
  * use kmalloc) but before smp initialisation, so we can probe the SMP
  * configuration and pick up necessary information.  */
-void
+void __init
 voyager_cat_init(void)
 {
 	voyager_module_t **modpp = &voyager_initial_module;

arch/x86/mach-voyager/voyager_smp.c

@@ -1900,7 +1900,7 @@ voyager_smp_prepare_cpus(unsigned int max_cpus)
 	smp_boot_cpus();
 }
 
-static void __devinit voyager_smp_prepare_boot_cpu(void)
+static void __cpuinit voyager_smp_prepare_boot_cpu(void)
 {
 	init_gdt(smp_processor_id());
 	switch_to_new_gdt();
@@ -1911,7 +1911,7 @@ static void __devinit voyager_smp_prepare_boot_cpu(void)
 	cpu_set(smp_processor_id(), cpu_present_map);
 }
 
-static int __devinit
+static int __cpuinit
 voyager_cpu_up(unsigned int cpu)
 {
 	/* This only works at boot for x86.  See "rewrite" above. */

arch/x86/pci/acpi.c

@@ -77,6 +77,9 @@ count_resource(struct acpi_resource *acpi_res, void *data)
 	struct acpi_resource_address64 addr;
 	acpi_status status;
 
+	if (info->res_num >= PCI_BUS_NUM_RESOURCES)
+		return AE_OK;
+
 	status = resource_to_addr(acpi_res, &addr);
 	if (ACPI_SUCCESS(status))
 		info->res_num++;
@@ -93,6 +96,9 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
 	unsigned long flags;
 	struct resource *root;
 
+	if (info->res_num >= PCI_BUS_NUM_RESOURCES)
+		return AE_OK;
+
 	status = resource_to_addr(acpi_res, &addr);
 	if (!ACPI_SUCCESS(status))
 		return AE_OK;

arch/x86/vdso/vgetcpu.c

@@ -13,32 +13,17 @@
 #include <asm/vgtod.h>
 #include "vextern.h"
 
-long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
+long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
 {
 	unsigned int dummy, p;
-	unsigned long j = 0;
 
-	/* Fast cache - only recompute value once per jiffies and avoid
-	   relatively costly rdtscp/cpuid otherwise.
-	   This works because the scheduler usually keeps the process
-	   on the same CPU and this syscall doesn't guarantee its
-	   results anyways.
-	   We do this here because otherwise user space would do it on
-	   its own in a likely inferior way (no access to jiffies).
-	   If you don't like it pass NULL. */
-	if (tcache && tcache->blob[0] == (j = *vdso_jiffies)) {
-		p = tcache->blob[1];
-	} else if (*vdso_vgetcpu_mode == VGETCPU_RDTSCP) {
+	if (*vdso_vgetcpu_mode == VGETCPU_RDTSCP) {
 		/* Load per CPU data from RDTSCP */
 		rdtscp(dummy, dummy, p);
 	} else {
 		/* Load per CPU data from GDT */
 		asm("lsl %1,%0" : "=r" (p) : "r" (__PER_CPU_SEG));
 	}
-	if (tcache) {
-		tcache->blob[0] = j;
-		tcache->blob[1] = p;
-	}
 	if (cpu)
 		*cpu = p & 0xfff;
 	if (node)

include/asm-x86/mach-default/mach_reboot.h

@@ -49,7 +49,7 @@ static inline void mach_reboot(void)
 		udelay(50);
 		kb_wait();
 		udelay(50);
-		outb(cmd | 0x04, 0x60);	/* set "System flag" */
+		outb(cmd | 0x14, 0x60); /* set "System flag" and "Keyboard Disabled" */
 		udelay(50);
 		kb_wait();
 		udelay(50);

include/asm-x86/mach-es7000/mach_mpparse.h

@@ -29,9 +29,9 @@ extern int mps_oem_check(struct mp_config_table *mpc, char *oem,
 static inline int es7000_check_dsdt(void)
 {
 	struct acpi_table_header header;
-	memcpy(&header, 0, sizeof(struct acpi_table_header));
-	acpi_get_table_header(ACPI_SIG_DSDT, 0, &header);
-	if (!strncmp(header.oem_id, "UNISYS", 6))
+
+	if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) &&
+	    !strncmp(header.oem_id, "UNISYS", 6))
 		return 1;
 	return 0;
 }

include/asm-x86/mach-voyager/setup_arch.h

@@ -1,5 +1,5 @@
 #include <asm/voyager.h>
-#include <asm/setup_32.h>
+#include <asm/setup.h>
 #define VOYAGER_BIOS_INFO ((struct voyager_bios_info *) \
 			(&boot_params.apm_bios_info))
 

kernel/sys.c

@@ -1750,32 +1750,14 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
 }
 
 asmlinkage long sys_getcpu(unsigned __user *cpup, unsigned __user *nodep,
-	   		   struct getcpu_cache __user *cache)
+			   struct getcpu_cache __user *unused)
 {
 	int err = 0;
 	int cpu = raw_smp_processor_id();
 	if (cpup)
 		err |= put_user(cpu, cpup);
 	if (nodep)
 		err |= put_user(cpu_to_node(cpu), nodep);
-	if (cache) {
-		/*
-		 * The cache is not needed for this implementation,
-		 * but make sure user programs pass something
-		 * valid. vsyscall implementations can instead make
-		 * good use of the cache. Only use t0 and t1 because
-		 * these are available in both 32bit and 64bit ABI (no
-		 * need for a compat_getcpu). 32bit has enough
-		 * padding
-		 */
-		unsigned long t0, t1;
-		get_user(t0, &cache->blob[0]);
-		get_user(t1, &cache->blob[1]);
-		t0++;
-		t1++;
-		put_user(t0, &cache->blob[0]);
-		put_user(t1, &cache->blob[1]);
-	}
 	return err ? -EFAULT : 0;
 }
 

kernel/time/ntp.c

@@ -205,7 +205,7 @@ static void sync_cmos_clock(unsigned long dummy)
 		return;
 
 	getnstimeofday(&now);
-	if (abs(xtime.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec / 2)
+	if (abs(now.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec / 2)
 		fail = update_persistent_clock(now);
 
 	next.tv_nsec = (NSEC_PER_SEC / 2) - now.tv_nsec;