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x86: unify smp_scan_config 

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Alexey Starikovskiy 2008-04-04 23:42:46 +04:00 committed by Ingo Molnar
parent 4421b1c8b9
commit 92fd4b7abd
2 changed files with 41 additions and 6 deletions
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21
arch/x86/kernel/mpparse_32.c
View File

@ -683,12 +683,13 @@ void __init get_smp_config(void)
static int __init smp_scan_config(unsigned long base, unsigned long length,
unsigned reserve)
{
unsigned long *bp = phys_to_virt(base);
extern void __bad_mpf_size(void);
unsigned int *bp = phys_to_virt(base);
struct intel_mp_floating *mpf;
printk(KERN_INFO "Scan SMP from %p for %ld bytes.\n", bp, length);
Dprintk("Scan SMP from %p for %ld bytes.\n", bp, length);
if (sizeof(*mpf) != 16)
printk("Error: MPF size\n");
__bad_mpf_size();
while (length > 0) {
mpf = (struct intel_mp_floating *)bp;
@ -699,6 +700,8 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
|| (mpf->mpf_specification == 4))) {
smp_found_config = 1;
mpf_found = mpf;
#ifdef CONFIG_X86_32
printk(KERN_INFO "found SMP MP-table at [%p] %08lx\n",
mpf, virt_to_phys(mpf));
reserve_bootmem(virt_to_phys(mpf), PAGE_SIZE,
@ -721,8 +724,16 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
BOOTMEM_DEFAULT);
}
mpf_found = mpf;
return 1;
#else
if (!reserve)
return 1;
reserve_bootmem_generic(virt_to_phys(mpf), PAGE_SIZE);
if (mpf->mpf_physptr)
reserve_bootmem_generic(mpf->mpf_physptr,
PAGE_SIZE);
#endif
return 1;
}
bp += 4;
length -= 16;

26
arch/x86/kernel/mpparse_64.c
View File

@ -593,7 +593,30 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
smp_found_config = 1;
mpf_found = mpf;
#ifdef CONFIG_X86_32
printk(KERN_INFO "found SMP MP-table at [%p] %08lx\n",
mpf, virt_to_phys(mpf));
reserve_bootmem(virt_to_phys(mpf), PAGE_SIZE,
BOOTMEM_DEFAULT);
if (mpf->mpf_physptr) {
/*
* We cannot access to MPC table to compute
* table size yet, as only few megabytes from
* the bottom is mapped now.
* PC-9800's MPC table places on the very last
* of physical memory; so that simply reserving
* PAGE_SIZE from mpg->mpf_physptr yields BUG()
* in reserve_bootmem.
*/
unsigned long size = PAGE_SIZE;
unsigned long end = max_low_pfn * PAGE_SIZE;
if (mpf->mpf_physptr + size > end)
size = end - mpf->mpf_physptr;
reserve_bootmem(mpf->mpf_physptr, size,
BOOTMEM_DEFAULT);
}
#else
if (!reserve)
return 1;
@ -601,7 +624,8 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
if (mpf->mpf_physptr)
reserve_bootmem_generic(mpf->mpf_physptr,
PAGE_SIZE);
return 1;
#endif
return 1;
}
bp += 4;
length -= 16;