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Merge branch 'x86/core' of git://git.kernel.org/pub/scm/linux/kernel/…
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…git/jaswinder/linux-2.6-tip into x86/cleanups
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Ingo Molnar committed Mar 21, 2009
2 parents 1894e36 + 0b3ba0c commit 648340d
Showing 1 changed file with 60 additions and 52 deletions.
112 changes: 60 additions & 52 deletions arch/x86/kernel/mpparse.c
Original file line number Diff line number Diff line change
Expand Up @@ -282,6 +282,14 @@ static void skip_entry(unsigned char **ptr, int *count, int size)
*count += size;
}

static void __init smp_dump_mptable(struct mpc_table *mpc, unsigned char *mpt)
{
printk(KERN_ERR "Your mptable is wrong, contact your HW vendor!\n"
"type %x\n", *mpt);
print_hex_dump(KERN_ERR, " ", DUMP_PREFIX_ADDRESS, 16,
1, mpc, mpc->length, 1);
}

static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
{
char str[16];
Expand Down Expand Up @@ -340,10 +348,7 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
break;
default:
/* wrong mptable */
printk(KERN_ERR "Your mptable is wrong, contact your HW vendor!\n");
printk(KERN_ERR "type %x\n", *mpt);
print_hex_dump(KERN_ERR, " ", DUMP_PREFIX_ADDRESS, 16,
1, mpc, mpc->length, 1);
smp_dump_mptable(mpc, mpt);
count = mpc->length;
break;
}
Expand Down Expand Up @@ -550,6 +555,55 @@ static unsigned long __init get_mpc_size(unsigned long physptr)
return size;
}

static int __init check_physptr(struct mpf_intel *mpf, unsigned int early)
{
struct mpc_table *mpc;
unsigned long size;

size = get_mpc_size(mpf->physptr);
mpc = early_ioremap(mpf->physptr, size);
/*
* Read the physical hardware table. Anything here will
* override the defaults.
*/
if (!smp_read_mpc(mpc, early)) {
#ifdef CONFIG_X86_LOCAL_APIC
smp_found_config = 0;
#endif
printk(KERN_ERR "BIOS bug, MP table errors detected!...\n"
"... disabling SMP support. (tell your hw vendor)\n");
early_iounmap(mpc, size);
return -1;
}
early_iounmap(mpc, size);

if (early)
return -1;

#ifdef CONFIG_X86_IO_APIC
/*
* If there are no explicit MP IRQ entries, then we are
* broken. We set up most of the low 16 IO-APIC pins to
* ISA defaults and hope it will work.
*/
if (!mp_irq_entries) {
struct mpc_bus bus;

printk(KERN_ERR "BIOS bug, no explicit IRQ entries, "
"using default mptable. (tell your hw vendor)\n");

bus.type = MP_BUS;
bus.busid = 0;
memcpy(bus.bustype, "ISA ", 6);
MP_bus_info(&bus);

construct_default_ioirq_mptable(0);
}
#endif

return 0;
}

/*
* Scan the memory blocks for an SMP configuration block.
*/
Expand Down Expand Up @@ -603,51 +657,8 @@ static void __init __get_smp_config(unsigned int early)
construct_default_ISA_mptable(mpf->feature1);

} else if (mpf->physptr) {
struct mpc_table *mpc;
unsigned long size;

size = get_mpc_size(mpf->physptr);
mpc = early_ioremap(mpf->physptr, size);
/*
* Read the physical hardware table. Anything here will
* override the defaults.
*/
if (!smp_read_mpc(mpc, early)) {
#ifdef CONFIG_X86_LOCAL_APIC
smp_found_config = 0;
#endif
printk(KERN_ERR
"BIOS bug, MP table errors detected!...\n");
printk(KERN_ERR "... disabling SMP support. "
"(tell your hw vendor)\n");
early_iounmap(mpc, size);
if (check_physptr(mpf, early))
return;
}
early_iounmap(mpc, size);

if (early)
return;
#ifdef CONFIG_X86_IO_APIC
/*
* If there are no explicit MP IRQ entries, then we are
* broken. We set up most of the low 16 IO-APIC pins to
* ISA defaults and hope it will work.
*/
if (!mp_irq_entries) {
struct mpc_bus bus;

printk(KERN_ERR "BIOS bug, no explicit IRQ entries, "
"using default mptable. "
"(tell your hw vendor)\n");

bus.type = MP_BUS;
bus.busid = 0;
memcpy(bus.bustype, "ISA ", 6);
MP_bus_info(&bus);

construct_default_ioirq_mptable(0);
}
#endif
} else
BUG();

Expand Down Expand Up @@ -910,10 +921,7 @@ static int __init replace_intsrc_all(struct mpc_table *mpc,
break;
default:
/* wrong mptable */
printk(KERN_ERR "Your mptable is wrong, contact your HW vendor!\n");
printk(KERN_ERR "type %x\n", *mpt);
print_hex_dump(KERN_ERR, " ", DUMP_PREFIX_ADDRESS, 16,
1, mpc, mpc->length, 1);
smp_dump_mptable(mpc, mpt);
goto out;
}
}
Expand Down

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