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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-19 18:53:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-19 18:53:02 -0800
commit3108864e2d70891d30d60af6af256a1b517d7078 (patch)
treef127ddaf0b582098caf7f9e3ed18ed535324eae4 /arch/x86
parent4f7dbc7ff4ec19b40ec083f7c54a87d3ece0089d (diff)
parent604d20554883cf03f888440d58ea7c6d36899839 (diff)
Merge branch 'x86/numa' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86/numa' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: make NUMA on 32-bit depend on EXPERIMENTAL again x86, hibernate: fix breakage on x86_32 with CONFIG_NUMA set
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig2
-rw-r--r--arch/x86/include/asm/mmzone_32.h4
-rw-r--r--arch/x86/mm/numa_32.c35
-rw-r--r--arch/x86/power/hibernate_32.c4
4 files changed, 44 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fd2de701953..ac22bb7719f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -960,7 +960,7 @@ config ARCH_PHYS_ADDR_T_64BIT
config NUMA
bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
depends on SMP
- depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || X86_BIGSMP || X86_SUMMIT && ACPI) && BROKEN)
+ depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || X86_BIGSMP || X86_SUMMIT && ACPI) && EXPERIMENTAL)
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP)
help
diff --git a/arch/x86/include/asm/mmzone_32.h b/arch/x86/include/asm/mmzone_32.h
index 485bdf059ff..07f1af494ca 100644
--- a/arch/x86/include/asm/mmzone_32.h
+++ b/arch/x86/include/asm/mmzone_32.h
@@ -34,10 +34,14 @@ static inline void get_memcfg_numa(void)
extern int early_pfn_to_nid(unsigned long pfn);
+extern void resume_map_numa_kva(pgd_t *pgd);
+
#else /* !CONFIG_NUMA */
#define get_memcfg_numa get_memcfg_numa_flat
+static inline void resume_map_numa_kva(pgd_t *pgd) {}
+
#endif /* CONFIG_NUMA */
#ifdef CONFIG_DISCONTIGMEM
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index 847c164725f..8518c678d83 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -222,6 +222,41 @@ static void __init remap_numa_kva(void)
}
}
+#ifdef CONFIG_HIBERNATION
+/**
+ * resume_map_numa_kva - add KVA mapping to the temporary page tables created
+ * during resume from hibernation
+ * @pgd_base - temporary resume page directory
+ */
+void resume_map_numa_kva(pgd_t *pgd_base)
+{
+ int node;
+
+ for_each_online_node(node) {
+ unsigned long start_va, start_pfn, size, pfn;
+
+ start_va = (unsigned long)node_remap_start_vaddr[node];
+ start_pfn = node_remap_start_pfn[node];
+ size = node_remap_size[node];
+
+ printk(KERN_DEBUG "%s: node %d\n", __FUNCTION__, node);
+
+ for (pfn = 0; pfn < size; pfn += PTRS_PER_PTE) {
+ unsigned long vaddr = start_va + (pfn << PAGE_SHIFT);
+ pgd_t *pgd = pgd_base + pgd_index(vaddr);
+ pud_t *pud = pud_offset(pgd, vaddr);
+ pmd_t *pmd = pmd_offset(pud, vaddr);
+
+ set_pmd(pmd, pfn_pmd(start_pfn + pfn,
+ PAGE_KERNEL_LARGE_EXEC));
+
+ printk(KERN_DEBUG "%s: %08lx -> pfn %08lx\n",
+ __FUNCTION__, vaddr, start_pfn + pfn);
+ }
+ }
+}
+#endif
+
static unsigned long calculate_numa_remap_pages(void)
{
int nid;
diff --git a/arch/x86/power/hibernate_32.c b/arch/x86/power/hibernate_32.c
index f2b6e3f11bf..81197c62d5b 100644
--- a/arch/x86/power/hibernate_32.c
+++ b/arch/x86/power/hibernate_32.c
@@ -12,6 +12,7 @@
#include <asm/system.h>
#include <asm/page.h>
#include <asm/pgtable.h>
+#include <asm/mmzone.h>
/* Defined in hibernate_asm_32.S */
extern int restore_image(void);
@@ -127,6 +128,9 @@ static int resume_physical_mapping_init(pgd_t *pgd_base)
}
}
}
+
+ resume_map_numa_kva(pgd_base);
+
return 0;
}