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Merge branch 'x86/numa' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse Source 
* '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
This commit is contained in:
Linus Torvalds 2008-11-19 18:53:02 -08:00
commit 3108864e2d
4 changed files with 44 additions and 1 deletions
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2
arch/x86/Kconfig
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@ -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

4
arch/x86/include/asm/mmzone_32.h
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@ -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

35
arch/x86/mm/numa_32.c
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@ -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;

4
arch/x86/power/hibernate_32.c
View File

@ -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;
}