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| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2008-04-04 23:42:53 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:36 +0200 |
| commit | 22cbb4bd12a86b80125accb77515482894ee670f (patch) | |
| tree | 0a12dbb766272c5b0fc27f915e07c5c96887b75f /arch/x86/kernel/mpparse_32.c | |
| parent | 92fd4b7abdb2b5b85d73ca0adbb6ad3f8b79f805 (diff) | |
| download | linux-3.10-22cbb4bd12a86b80125accb77515482894ee670f.tar.gz linux-3.10-22cbb4bd12a86b80125accb77515482894ee670f.tar.bz2 linux-3.10-22cbb4bd12a86b80125accb77515482894ee670f.zip | |
x86: unify uniq_io_apic_id
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/mpparse_32.c')
| -rw-r--r-- | arch/x86/kernel/mpparse_32.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/x86/kernel/mpparse_32.c b/arch/x86/kernel/mpparse_32.c index 7feafa5040d..a50a31331f9 100644 --- a/arch/x86/kernel/mpparse_32.c +++ b/arch/x86/kernel/mpparse_32.c @@ -814,17 +814,29 @@ static int mp_find_ioapic(int gsi) } printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi); - return -1; } static u8 uniq_ioapic_id(u8 id) { +#ifdef CONFIG_X86_32 if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && !APIC_XAPIC(apic_version[boot_cpu_physical_apicid])) return io_apic_get_unique_id(nr_ioapics, id); else return id; +#else + int i; + DECLARE_BITMAP(used, 256); + bitmap_zero(used, 256); + for (i = 0; i < nr_ioapics; i++) { + struct mpc_config_ioapic *ia = &mp_ioapics[i]; + __set_bit(ia->mpc_apicid, used); + } + if (!test_bit(id, used)) + return id; + return find_first_zero_bit(used, 256); +#endif } void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) |