Pull novell-bugzilla-156426 into release branch

[pandora-kernel.git] / arch / i386 / kernel / acpi / boot.c

diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index f21fa0d..5ccbf58 100644 (file)
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -215,7 +215,7 @@ static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
 {
        struct acpi_table_madt *madt = NULL;
 
-       if (!phys_addr || !size)
+       if (!phys_addr || !size || !cpu_has_apic)
                return -EINVAL;
 
        madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
@@ -248,10 +248,17 @@ acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
 
        acpi_table_print_madt_entry(header);
 
-       /* Register even disabled CPUs for cpu hotplug */
-
-       x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
+       /* Record local apic id only when enabled */
+       if (processor->flags.enabled)
+               x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
 
+       /*
+        * We need to register disabled CPU as well to permit
+        * counting disabled CPUs. This allows us to size
+        * cpus_possible_map more accurately, to permit
+        * to not preallocating memory for all NR_CPUS
+        * when we use CPU hotplug.
+        */
        mp_register_lapic(processor->id,        /* APIC ID */
                          processor->flags.enabled);    /* Enabled? */
 
@@ -614,9 +621,9 @@ extern u32 pmtmr_ioport;
 
 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
 {
-       struct fadt_descriptor_rev2 *fadt = NULL;
+       struct fadt_descriptor *fadt = NULL;
 
-       fadt = (struct fadt_descriptor_rev2 *)__acpi_map_table(phys, size);
+       fadt = (struct fadt_descriptor *)__acpi_map_table(phys, size);
        if (!fadt) {
                printk(KERN_WARNING PREFIX "Unable to map FADT\n");
                return 0;
@@ -661,10 +668,10 @@ unsigned long __init acpi_find_rsdp(void)
        unsigned long rsdp_phys = 0;
 
        if (efi_enabled) {
-               if (efi.acpi20)
-                       return __pa(efi.acpi20);
-               else if (efi.acpi)
-                       return __pa(efi.acpi);
+               if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+                       return efi.acpi20;
+               else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+                       return efi.acpi;
        }
        /*
         * Scan memory looking for the RSDP signature. First search EBDA (low
@@ -686,6 +693,9 @@ static int __init acpi_parse_madt_lapic_entries(void)
 {
        int count;
 
+       if (!cpu_has_apic)
+               return -ENODEV;
+
        /* 
         * Note that the LAPIC address is obtained from the MADT (32-bit value)
         * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
@@ -744,6 +754,9 @@ static int __init acpi_parse_madt_ioapic_entries(void)
                return -ENODEV;
        }
 
+       if (!cpu_has_apic) 
+               return -ENODEV;
+
        /*
         * if "noapic" boot option, don't look for IO-APICs
         */
@@ -1104,9 +1117,6 @@ int __init acpi_boot_table_init(void)
                disable_acpi();
                return error;
        }
-#ifdef __i386__
-       check_acpi_pci();
-#endif
 
        acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);