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-rw-r--r--arch/x86/kernel/acpi/boot.c32
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce_64.c2
-rw-r--r--arch/x86/kernel/cpu/proc.c8
-rw-r--r--arch/x86/kernel/reboot_fixups_32.c1
-rw-r--r--arch/x86/kernel/setup_64.c9
-rw-r--r--arch/x86/kernel/time_64.c41
-rw-r--r--arch/x86/mach-voyager/voyager_cat.c2
-rw-r--r--arch/x86/mach-voyager/voyager_smp.c4
-rw-r--r--arch/x86/pci/acpi.c6
-rw-r--r--arch/x86/vdso/vgetcpu.c19
10 files changed, 73 insertions, 51 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 289247d974c6..0ca27c7b0e8d 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/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);
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 447b351f1f2a..4b21d29fb5aa 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/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));
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 066f8c6af4df..3900e46d66db 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/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)
diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index 1a07bbea7be3..f452726c0fe2 100644
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/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 },
};
/*
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 238633d3d09a..30d94d1d5f5f 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/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);
}
diff --git a/arch/x86/kernel/time_64.c b/arch/x86/kernel/time_64.c
index c821edc32216..368b1942b39a 100644
--- a/arch/x86/kernel/time_64.c
+++ b/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);
/*
diff --git a/arch/x86/mach-voyager/voyager_cat.c b/arch/x86/mach-voyager/voyager_cat.c
index 26a2d4c54b68..2132ca652df1 100644
--- a/arch/x86/mach-voyager/voyager_cat.c
+++ b/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;
diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index 69371434b0cf..88124dd35406 100644
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/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. */
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 2d88f7c6d6ac..7e35078673a4 100644
--- a/arch/x86/pci/acpi.c
+++ b/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;
diff --git a/arch/x86/vdso/vgetcpu.c b/arch/x86/vdso/vgetcpu.c
index 91f6e85d0fc2..3b1ae1abfba9 100644
--- a/arch/x86/vdso/vgetcpu.c
+++ b/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)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-21 19:39:59 +0300