x86: Move find_smp_config() earlier and avoid bootmem usage

Move the find_smp_config() call to before bootmem is initialized.
Use reserve_early() instead of reserve_bootmem() in it.

This simplifies the code, we only need to call find_smp_config()
once and can remove the now unneeded reserve parameter from
x86_init_mpparse::find_smp_config.

We thus also reduce x86's dependency on bootmem allocations.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4B0BB9F2.70907@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 12 deletions

diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c
index b9e2dbfe55c3..970ed579d4e4 100644
--- a/arch/x86/mm/k8topology_64.c
+++ b/arch/x86/mm/k8topology_64.c
@@ -57,18 +57,6 @@ static __init void early_get_boot_cpu_id(void)
          * need to get boot_cpu_id so can use that to create apicid_to_node
          * in k8_scan_nodes()
          */
-        /*
-         * Find possible boot-time SMP configuration:
-         */
-#ifdef CONFIG_X86_MPPARSE
-        early_find_smp_config();
-#endif
-#ifdef CONFIG_ACPI
-        /*
-         * Read APIC information from ACPI tables.
-         */
-        early_acpi_boot_init();
-#endif
 #ifdef CONFIG_X86_MPPARSE
         /*
          * get boot-time SMP configuration: