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| author | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-14 16:29:08 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-14 16:29:08 +1100 |
| commit | c088f4e9da74b901f7ed1749ad697d77622ed0f9 (patch) | |
| tree | 84cddf20369f82f10c1c3712e6cce20dd1b9d863 /arch/x86/kernel/acpi/boot.c | |
| parent | ce79735c12d62c3cda38eb31762cf98e87c7b087 (diff) | |
| parent | a6525042bfdfcab128bd91fad264de10fd24a55e (diff) | |
| download | lwn-c088f4e9da74b901f7ed1749ad697d77622ed0f9.tar.gz lwn-c088f4e9da74b901f7ed1749ad697d77622ed0f9.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86/kernel/acpi/boot.c')
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 29dc0c89d4af..d37593c2f438 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -47,7 +47,7 @@ #endif static int __initdata acpi_force = 0; - +u32 acpi_rsdt_forced; #ifdef CONFIG_ACPI int acpi_disabled = 0; #else @@ -1374,6 +1374,17 @@ static void __init acpi_process_madt(void) "Invalid BIOS MADT, disabling ACPI\n"); disable_acpi(); } + } else { + /* + * ACPI found no MADT, and so ACPI wants UP PIC mode. + * In the event an MPS table was found, forget it. + * Boot with "acpi=off" to use MPS on such a system. + */ + if (smp_found_config) { + printk(KERN_WARNING PREFIX + "No APIC-table, disabling MPS\n"); + smp_found_config = 0; + } } /* @@ -1809,6 +1820,10 @@ static int __init parse_acpi(char *arg) disable_acpi(); acpi_ht = 1; } + /* acpi=rsdt use RSDT instead of XSDT */ + else if (strcmp(arg, "rsdt") == 0) { + acpi_rsdt_forced = 1; + } /* "acpi=noirq" disables ACPI interrupt routing */ else if (strcmp(arg, "noirq") == 0) { acpi_noirq_set(); |