/* * ACPI 3.0 based NUMA setup * Copyright 2004 Andi Kleen, SuSE Labs. * * Reads the ACPI SRAT table to figure out what memory belongs to which CPUs. * * Called from acpi_numa_init while reading the SRAT and SLIT tables. * Assumes all memory regions belonging to a single proximity domain * are in one chunk. Holes between them will be included in the node. * * Adapted for Xen: Ryan Harper */ #include #include #include #include #include #include #include static struct acpi_table_slit *acpi_slit; static nodemask_t nodes_parsed __initdata; static nodemask_t nodes_found __initdata; static struct node nodes[MAX_NUMNODES] __initdata; static u8 pxm2node[256] = { [0 ... 255] = 0xff }; /* Too small nodes confuse the VM badly. Usually they result from BIOS bugs. */ #define NODE_MIN_SIZE (4*1024*1024) static int node_to_pxm(int n); int pxm_to_node(int pxm) { if ((unsigned)pxm >= 256) return -1; /* Extend 0xff to (int)-1 */ return (signed char)pxm2node[pxm]; } static __init int setup_node(int pxm) { unsigned node = pxm2node[pxm]; if (node == 0xff) { if (nodes_weight(nodes_found) >= MAX_NUMNODES) return -1; node = first_unset_node(nodes_found); node_set(node, nodes_found); pxm2node[pxm] = node; } return pxm2node[pxm]; } static __init int conflicting_nodes(u64 start, u64 end) { int i; for_each_node_mask(i, nodes_parsed) { struct node *nd = &nodes[i]; if (nd->start == nd->end) continue; if (nd->end > start && nd->start < end) return i; if (nd->end == end && nd->start == start) return i; } return -1; } static __init void cutoff_node(int i, u64 start, u64 end) { struct node *nd = &nodes[i]; if (nd->start < start) { nd->start = start; if (nd->end < nd->start) nd->start = nd->end; } if (nd->end > end) { nd->end = end; if (nd->start > nd->end) nd->start = nd->end; } } static __init void bad_srat(void) { int i; printk(KERN_ERR "SRAT: SRAT not used.\n"); acpi_numa = -1; for (i = 0; i < MAX_LOCAL_APIC; i++) apicid_to_node[i] = NUMA_NO_NODE; } static __init inline int srat_disabled(void) { return numa_off || acpi_numa < 0; } /* * A lot of BIOS fill in 10 (= no distance) everywhere. This messes * up the NUMA heuristics which wants the local node to have a smaller * distance than the others. * Do some quick checks here and only use the SLIT if it passes. */ static __init int slit_valid(struct acpi_table_slit *slit) { int i, j; int d = slit->locality_count; for (i = 0; i < d; i++) { for (j = 0; j < d; j++) { u8 val = slit->entry[d*i + j]; if (i == j) { if (val != 10) return 0; } else if (val <= 10) return 0; } } return 1; } /* Callback for SLIT parsing */ void __init acpi_numa_slit_init(struct acpi_table_slit *slit) { if (!slit_valid(slit)) { printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n"); return; } acpi_slit = slit; } /* Callback for Proximity Domain -> LAPIC mapping */ void __init acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa) { int pxm, node; if (srat_disabled()) return; if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) { bad_srat(); return; } if (pa->flags.enabled == 0) return; pxm = pa->proximity_domain; node = setup_node(pxm); if (node < 0) { printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm); bad_srat(); return; } apicid_to_node[pa->apic_id] = node; acpi_numa = 1; printk(KERN_INFO "SRAT: PXM %u -> APIC %u -> Node %u\n", pxm, pa->apic_id, node); } /* Callback for parsing of the Proximity Domain <-> Memory Area mappings */ void __init acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma) { struct node *nd; u64 start, end; int node, pxm; int i; if (srat_disabled()) return; if (ma->header.length != sizeof(struct acpi_table_memory_affinity)) { bad_srat(); return; } if (ma->flags.enabled == 0) return; start = ma->base_addr_lo | ((u64)ma->base_addr_hi << 32); end = start + (ma->length_lo | ((u64)ma->length_hi << 32)); pxm = ma->proximity_domain; node = setup_node(pxm); if (node < 0) { printk(KERN_ERR "SRAT: Too many proximity domains.\n"); bad_srat(); return; } /* It is fine to add this area to the nodes data it will be used later*/ if (ma->flags.hot_pluggable == 1) printk(KERN_INFO "SRAT: hot plug zone found %"PRIx64" - %"PRIx64" \n", start, end); i = conflicting_nodes(start, end); if (i == node) { printk(KERN_WARNING "SRAT: Warning: PXM %d (%"PRIx64"-%"PRIx64") overlaps with itself (%" PRIx64"
#
# Copyright (C) 2006-2011 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk

ARCH:=i386
BOARD:=x86
BOARDNAME:=x86
FEATURES:=squashfs jffs2 ext4 vdi vmdk pcmcia targz
SUBTARGETS=generic olpc xen_domu ep80579 net5501 kvm_guest geos alix2 thincan

LINUX_VERSION:=3.3.7

include $(INCLUDE_DIR)/target.mk

$(eval $(call BuildTarget))

$(eval $(call $(if $(CONFIG_TARGET_ROOTFS_ISO),RequireCommand,Ignore),mkisofs, \
   	Please install mkisofs. \
))
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-05 18:32:50 +0000