diff options
| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2008-04-04 23:42:46 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:36 +0200 |
| commit | 92fd4b7abdb2b5b85d73ca0adbb6ad3f8b79f805 (patch) | |
| tree | 31ae3c816b14db6c1b305e074657eb732e719107 /arch/x86/kernel/mpparse_64.c | |
| parent | 4421b1c8b9f5da24f8c737ede2c05d399dea2015 (diff) | |
x86: unify smp_scan_config
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/mpparse_64.c')
| -rw-r--r-- | arch/x86/kernel/mpparse_64.c | 26 |
1 files changed, 25 insertions, 1 deletions
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; |