diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/mpparse_32.c | 21 | ||||
| -rw-r--r-- | arch/x86/kernel/mpparse_64.c | 26 |
2 files changed, 41 insertions, 6 deletions
diff --git a/arch/x86/kernel/mpparse_32.c b/arch/x86/kernel/mpparse_32.c index bc2000ee039..7feafa5040d 100644 --- a/arch/x86/kernel/mpparse_32.c +++ b/arch/x86/kernel/mpparse_32.c @@ -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; diff --git a/arch/x86/kernel/mpparse_64.c b/arch/x86/kernel/mpparse_64.c index 8c7af5b7ddd..9a961008991 100644 --- a/arch/x86/kernel/mpparse_64.c +++ b/arch/x86/kernel/mpparse_64.c @@ -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; |