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Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse Source 
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: fix 2.6.27rc1 cannot boot more than 8CPUs
  x86: make "apic" an early_param() on 32-bit, NULL check
  EFI, x86: fix function prototype
  x86, pci-calgary: fix function declaration
  x86: work around gcc 3.4.x bug
  x86: make "apic" an early_param() on 32-bit
  x86, debug: tone down arch/x86/kernel/mpparse.c debugging printk
  x86_64: restore the proper NR_IRQS define so larger systems work.
  x86: Restore proper vector locking during cpu hotplug
  x86: Fix broken VMI in 2.6.27-rc..
  x86: fdiv bug detection fix
This commit is contained in:
Linus Torvalds 2008-08-11 16:44:35 -07:00
commit 7019b1b500
13 changed files with 89 additions and 49 deletions
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14
arch/x86/kernel/apic_32.c
View File

@ -1720,15 +1720,19 @@ static int __init parse_lapic_timer_c2_ok(char *arg)
}
early_param("lapic_timer_c2_ok", parse_lapic_timer_c2_ok);
static int __init apic_set_verbosity(char *str)
static int __init apic_set_verbosity(char *arg)
{
if (strcmp("debug", str) == 0)
if (!arg)
return -EINVAL;
if (strcmp(arg, "debug") == 0)
apic_verbosity = APIC_DEBUG;
else if (strcmp("verbose", str) == 0)
else if (strcmp(arg, "verbose") == 0)
apic_verbosity = APIC_VERBOSE;
return 1;
return 0;
}
__setup("apic=", apic_set_verbosity);
early_param("apic", apic_set_verbosity);
static int __init lapic_insert_resource(void)
{

6
arch/x86/kernel/cpu/bugs.c
View File

@ -50,6 +50,8 @@ static double __initdata y = 3145727.0;
*/
static void __init check_fpu(void)
{
s32 fdiv_bug;
if (!boot_cpu_data.hard_math) {
#ifndef CONFIG_MATH_EMULATION
printk(KERN_EMERG "No coprocessor found and no math emulation present.\n");
@ -74,8 +76,10 @@ static void __init check_fpu(void)
"fistpl %0\n\t"
"fwait\n\t"
"fninit"
: "=m" (*&boot_cpu_data.fdiv_bug)
: "=m" (*&fdiv_bug)
: "m" (*&x), "m" (*&y));
boot_cpu_data.fdiv_bug = fdiv_bug;
if (boot_cpu_data.fdiv_bug)
printk("Hmm, FPU with FDIV bug.\n");
}

6
arch/x86/kernel/io_apic_32.c
View File

@ -57,7 +57,7 @@ atomic_t irq_mis_count;
static struct { int pin, apic; } ioapic_i8259 = { -1, -1 };
static DEFINE_SPINLOCK(ioapic_lock);
static DEFINE_SPINLOCK(vector_lock);
DEFINE_SPINLOCK(vector_lock);
int timer_through_8259 __initdata;
@ -1209,10 +1209,6 @@ static int assign_irq_vector(int irq)
return vector;
}
void setup_vector_irq(int cpu)
{
}
static struct irq_chip ioapic_chip;
#define IOAPIC_AUTO -1

25
arch/x86/kernel/io_apic_64.c
View File

@ -101,7 +101,7 @@ int timer_through_8259 __initdata;
static struct { int pin, apic; } ioapic_i8259 = { -1, -1 };
static DEFINE_SPINLOCK(ioapic_lock);
DEFINE_SPINLOCK(vector_lock);
static DEFINE_SPINLOCK(vector_lock);
/*
* # of IRQ routing registers
@ -697,6 +697,19 @@ static int pin_2_irq(int idx, int apic, int pin)
return irq;
}
void lock_vector_lock(void)
{
/* Used to the online set of cpus does not change
* during assign_irq_vector.
*/
spin_lock(&vector_lock);
}
void unlock_vector_lock(void)
{
spin_unlock(&vector_lock);
}
static int __assign_irq_vector(int irq, cpumask_t mask)
{
/*
@ -802,7 +815,7 @@ static void __clear_irq_vector(int irq)
cpus_clear(cfg->domain);
}
static void __setup_vector_irq(int cpu)
void __setup_vector_irq(int cpu)
{
/* Initialize vector_irq on a new cpu */
/* This function must be called with vector_lock held */
@ -825,14 +838,6 @@ static void __setup_vector_irq(int cpu)
}
}
void setup_vector_irq(int cpu)
{
spin_lock(&vector_lock);
__setup_vector_irq(smp_processor_id());
spin_unlock(&vector_lock);
}
static struct irq_chip ioapic_chip;
static void ioapic_register_intr(int irq, unsigned long trigger)

11
arch/x86/kernel/mpparse.c
View File

@ -83,7 +83,7 @@ static void __init MP_bus_info(struct mpc_config_bus *m)
if (x86_quirks->mpc_oem_bus_info)
x86_quirks->mpc_oem_bus_info(m, str);
else
printk(KERN_INFO "Bus #%d is %s\n", m->mpc_busid, str);
apic_printk(APIC_VERBOSE, "Bus #%d is %s\n", m->mpc_busid, str);
#if MAX_MP_BUSSES < 256
if (m->mpc_busid >= MAX_MP_BUSSES) {
@ -154,7 +154,7 @@ static void __init MP_ioapic_info(struct mpc_config_ioapic *m)
static void print_MP_intsrc_info(struct mpc_config_intsrc *m)
{
printk(KERN_CONT "Int: type %d, pol %d, trig %d, bus %02x,"
apic_printk(APIC_VERBOSE, "Int: type %d, pol %d, trig %d, bus %02x,"
" IRQ %02x, APIC ID %x, APIC INT %02x\n",
m->mpc_irqtype, m->mpc_irqflag & 3,
(m->mpc_irqflag >> 2) & 3, m->mpc_srcbus,
@ -163,7 +163,7 @@ static void print_MP_intsrc_info(struct mpc_config_intsrc *m)
static void __init print_mp_irq_info(struct mp_config_intsrc *mp_irq)
{
printk(KERN_CONT "Int: type %d, pol %d, trig %d, bus %02x,"
apic_printk(APIC_VERBOSE, "Int: type %d, pol %d, trig %d, bus %02x,"
" IRQ %02x, APIC ID %x, APIC INT %02x\n",
mp_irq->mp_irqtype, mp_irq->mp_irqflag & 3,
(mp_irq->mp_irqflag >> 2) & 3, mp_irq->mp_srcbus,
@ -235,7 +235,7 @@ static void __init MP_intsrc_info(struct mpc_config_intsrc *m)
static void __init MP_lintsrc_info(struct mpc_config_lintsrc *m)
{
printk(KERN_INFO "Lint: type %d, pol %d, trig %d, bus %02x,"
apic_printk(APIC_VERBOSE, "Lint: type %d, pol %d, trig %d, bus %02x,"
" IRQ %02x, APIC ID %x, APIC LINT %02x\n",
m->mpc_irqtype, m->mpc_irqflag & 3,
(m->mpc_irqflag >> 2) & 3, m->mpc_srcbusid,
@ -695,7 +695,8 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
unsigned int *bp = phys_to_virt(base);
struct intel_mp_floating *mpf;
printk(KERN_DEBUG "Scan SMP from %p for %ld bytes.\n", bp, length);
apic_printk(APIC_VERBOSE, "Scan SMP from %p for %ld bytes.\n",
bp, length);
BUILD_BUG_ON(sizeof(*mpf) != 16);
while (length > 0) {

2
arch/x86/kernel/pci-calgary_64.c
View File

@ -1350,7 +1350,7 @@ static void calgary_init_bitmap_from_tce_table(struct iommu_table *tbl)
* Function for kdump case. Get the tce tables from first kernel
* by reading the contents of the base adress register of calgary iommu
*/
static void get_tce_space_from_tar()
static void get_tce_space_from_tar(void)
{
int bus;
void __iomem *target;

22
arch/x86/kernel/setup.c
View File

@ -604,6 +604,14 @@ void __init setup_arch(char **cmdline_p)
early_cpu_init();
early_ioremap_init();
#if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
/*
* Must be before kernel pagetables are setup
* or fixmap area is touched.
*/
vmi_init();
#endif
ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
screen_info = boot_params.screen_info;
edid_info = boot_params.edid_info;
@ -817,14 +825,6 @@ void __init setup_arch(char **cmdline_p)
kvmclock_init();
#endif
#if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
/*
* Must be after max_low_pfn is determined, and before kernel
* pagetables are setup.
*/
vmi_init();
#endif
paravirt_pagetable_setup_start(swapper_pg_dir);
paging_init();
paravirt_pagetable_setup_done(swapper_pg_dir);
@ -861,12 +861,6 @@ void __init setup_arch(char **cmdline_p)
init_apic_mappings();
ioapic_init_mappings();
#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC) && defined(CONFIG_X86_32)
if (def_to_bigsmp)
printk(KERN_WARNING "More than 8 CPUs detected and "
"CONFIG_X86_PC cannot handle it.\nUse "
"CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
#endif
kvm_guest_init();
e820_reserve_resources();

22
arch/x86/kernel/smpboot.c
View File

@ -326,12 +326,16 @@ static void __cpuinit start_secondary(void *unused)
* for which cpus receive the IPI. Holding this
* lock helps us to not include this cpu in a currently in progress
* smp_call_function().
*
* We need to hold vector_lock so there the set of online cpus
* does not change while we are assigning vectors to cpus. Holding
* this lock ensures we don't half assign or remove an irq from a cpu.
*/
ipi_call_lock_irq();
#ifdef CONFIG_X86_IO_APIC
setup_vector_irq(smp_processor_id());
#endif
lock_vector_lock();
__setup_vector_irq(smp_processor_id());
cpu_set(smp_processor_id(), cpu_online_map);
unlock_vector_lock();
ipi_call_unlock_irq();
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
@ -990,7 +994,17 @@ int __cpuinit native_cpu_up(unsigned int cpu)
flush_tlb_all();
low_mappings = 1;
#ifdef CONFIG_X86_PC
if (def_to_bigsmp && apicid > 8) {
printk(KERN_WARNING
"More than 8 CPUs detected - skipping them.\n"
"Use CONFIG_X86_GENERICARCH and CONFIG_X86_BIGSMP.\n");
err = -1;
} else
err = do_boot_cpu(apicid, cpu);
#else
err = do_boot_cpu(apicid, cpu);
#endif
zap_low_mappings();
low_mappings = 0;
@ -1336,7 +1350,9 @@ int __cpu_disable(void)
remove_siblinginfo(cpu);
/* It's now safe to remove this processor from the online map */
lock_vector_lock();
remove_cpu_from_maps(cpu);
unlock_vector_lock();
fixup_irqs(cpu_online_map);
return 0;
}

3
arch/x86/kernel/vmi_32.c
View File

@ -37,6 +37,7 @@
#include <asm/timer.h>
#include <asm/vmi_time.h>
#include <asm/kmap_types.h>
#include <asm/setup.h>
/* Convenient for calling VMI functions indirectly in the ROM */
typedef u32 __attribute__((regparm(1))) (VROMFUNC)(void);
@ -683,7 +684,7 @@ void vmi_bringup(void)
{
/* We must establish the lowmem mapping for MMU ops to work */
if (vmi_ops.set_linear_mapping)
vmi_ops.set_linear_mapping(0, (void *)__PAGE_OFFSET, max_low_pfn, 0);
vmi_ops.set_linear_mapping(0, (void *)__PAGE_OFFSET, MAXMEM_PFN, 0);
}
/*

3
arch/x86/mm/pgtable.c
View File

@ -207,6 +207,9 @@ static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[])
unsigned long addr;
int i;
if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */
return;
pud = pud_offset(pgd, 0);
for (addr = i = 0; i < PREALLOCATED_PMDS;

2
include/asm-x86/efi.h
View File

@ -86,7 +86,7 @@ extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
(u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
extern void *efi_ioremap(unsigned long addr, unsigned long size);
extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size);
#endif /* CONFIG_X86_32 */

12
include/asm-x86/hw_irq.h
View File

@ -98,9 +98,17 @@ extern void (*const interrupt[NR_IRQS])(void);
#else
typedef int vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);
extern spinlock_t vector_lock;
#endif
extern void setup_vector_irq(int cpu);
#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_X86_64)
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
extern void __setup_vector_irq(int cpu);
#else
static inline void lock_vector_lock(void) {}
static inline void unlock_vector_lock(void) {}
static inline void __setup_vector_irq(int cpu) {}
#endif
#endif /* !ASSEMBLY_ */

10
include/asm-x86/irq_vectors.h
View File

@ -109,7 +109,15 @@
#define LAST_VM86_IRQ 15
#define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15)
#if !defined(CONFIG_X86_VOYAGER)
#ifdef CONFIG_X86_64
# if NR_CPUS < MAX_IO_APICS
# define NR_IRQS (NR_VECTORS + (32 * NR_CPUS))
# else
# define NR_IRQS (NR_VECTORS + (32 * MAX_IO_APICS))
# endif
# define NR_IRQ_VECTORS NR_IRQS
#elif !defined(CONFIG_X86_VOYAGER)
# if defined(CONFIG_X86_IO_APIC) || defined(CONFIG_PARAVIRT) || defined(CONFIG_X86_VISWS)