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Commit 2706a0bf authored by Tejun Heo's avatar Tejun Heo
Browse files

x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too 



Now that NUMA init path is unified, amdtopology can be enabled on
32bit.  Make amdtopology.c safe on 32bit by explicitly using u64 and
drop X86_64 dependency from Kconfig.

Inclusion of bootmem.h is added for max_pfn declaration.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
parent c6f58878

arch/x86/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -1174,7 +1174,7 @@ comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI" 
config AMD_NUMA

	def_bool y

	prompt "Old style AMD Opteron NUMA detection"

	depends on X86_64 && NUMA && PCI

	depends on NUMA && PCI

	---help---

	  Enable AMD NUMA node topology detection.  You should say Y here if

	  you have a multi processor AMD system. This uses an old method to

arch/x86/mm/amdtopology.c

+11 −10
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/module.h>

#include <linux/nodemask.h>

#include <linux/memblock.h>

#include <linux/bootmem.h>



#include <asm/io.h>

#include <linux/pci_ids.h>
@@ -69,10 +70,10 @@ static __init void early_get_boot_cpu_id(void) 


int __init amd_numa_init(void)

{

	unsigned long start = PFN_PHYS(0);

	unsigned long end = PFN_PHYS(max_pfn);

	u64 start = PFN_PHYS(0);

	u64 end = PFN_PHYS(max_pfn);

	unsigned numnodes;

	unsigned long prevbase;

	u64 prevbase;

	int i, j, nb;

	u32 nodeid, reg;

	unsigned int bits, cores, apicid_base;
@@ -95,7 +96,7 @@ int __init amd_numa_init(void) 


	prevbase = 0;

	for (i = 0; i < 8; i++) {

		unsigned long base, limit;

		u64 base, limit;



		base = read_pci_config(0, nb, 1, 0x40 + i*8);

		limit = read_pci_config(0, nb, 1, 0x44 + i*8);
@@ -107,18 +108,18 @@ int __init amd_numa_init(void) 
			continue;

		}

		if (nodeid >= numnodes) {

			pr_info("Ignoring excess node %d (%lx:%lx)\n", nodeid,

			pr_info("Ignoring excess node %d (%Lx:%Lx)\n", nodeid,

				base, limit);

			continue;

		}



		if (!limit) {

			pr_info("Skipping node entry %d (base %lx)\n",

			pr_info("Skipping node entry %d (base %Lx)\n",

				i, base);

			continue;

		}

		if ((base >> 8) & 3 || (limit >> 8) & 3) {

			pr_err("Node %d using interleaving mode %lx/%lx\n",

			pr_err("Node %d using interleaving mode %Lx/%Lx\n",

			       nodeid, (base >> 8) & 3, (limit >> 8) & 3);

			return -EINVAL;

		}
@@ -150,19 +151,19 @@ int __init amd_numa_init(void) 
			continue;

		}

		if (limit < base) {

			pr_err("Node %d bogus settings %lx-%lx.\n",

			pr_err("Node %d bogus settings %Lx-%Lx.\n",

			       nodeid, base, limit);

			continue;

		}



		/* Could sort here, but pun for now. Should not happen anyroads. */

		if (prevbase > base) {

			pr_err("Node map not sorted %lx,%lx\n",

			pr_err("Node map not sorted %Lx,%Lx\n",

			       prevbase, base);

			return -EINVAL;

		}



		pr_info("Node %d MemBase %016lx Limit %016lx\n",

		pr_info("Node %d MemBase %016Lx Limit %016Lx\n",

			nodeid, base, limit);



		prevbase = base;