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authorIngo Molnar <mingo@elte.hu>2009-01-11 03:03:30 +0100
committerIngo Molnar <mingo@elte.hu>2009-01-11 03:03:30 +0100
commitf45ac22ae2b8fc5b4c32d9b8d17ea419a8701d89 (patch)
tree8e05bccd7b85fc3dd2fbd33ec3286de27e152819 /arch/x86/mm
parent79f3b3cb7a2586b319a43a7f29924c6c555e4357 (diff)
parentc59765042f53a79a7a65585042ff463b69cb248c (diff)
Merge commit 'v2.6.29-rc1' into x86/urgent
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/fault.c24
-rw-r--r--arch/x86/mm/init_32.c4
-rw-r--r--arch/x86/mm/init_64.c4
-rw-r--r--arch/x86/mm/numa_32.c4
4 files changed, 14 insertions, 22 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 57ec8c86a87..9e268b6b204 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -667,7 +667,6 @@ void __kprobes do_page_fault(struct pt_regs *regs, unsigned long error_code)
if (unlikely(in_atomic() || !mm))
goto bad_area_nosemaphore;
-again:
/*
* When running in the kernel we expect faults to occur only to
* addresses in user space. All other faults represent errors in the
@@ -859,25 +858,14 @@ no_context:
oops_end(flags, regs, sig);
#endif
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
out_of_memory:
+ /*
+ * We ran out of memory, call the OOM killer, and return the userspace
+ * (which will retry the fault, or kill us if we got oom-killed).
+ */
up_read(&mm->mmap_sem);
- if (is_global_init(tsk)) {
- yield();
- /*
- * Re-lookup the vma - in theory the vma tree might
- * have changed:
- */
- goto again;
- }
-
- printk("VM: killing process %s\n", tsk->comm);
- if (error_code & PF_USER)
- do_group_exit(SIGKILL);
- goto no_context;
+ pagefault_out_of_memory();
+ return;
do_sigbus:
up_read(&mm->mmap_sem);
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index f99a6c6c432..88f1b10de3b 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -328,6 +328,8 @@ int devmem_is_allowed(unsigned long pagenr)
{
if (pagenr <= 256)
return 1;
+ if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
+ return 0;
if (!page_is_ram(pagenr))
return 1;
return 0;
@@ -1079,7 +1081,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
- return __add_pages(zone, start_pfn, nr_pages);
+ return __add_pages(nid, zone, start_pfn, nr_pages);
}
#endif
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 9f7a0d24d42..23f68e77ad1 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -857,7 +857,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
if (last_mapped_pfn > max_pfn_mapped)
max_pfn_mapped = last_mapped_pfn;
- ret = __add_pages(zone, start_pfn, nr_pages);
+ ret = __add_pages(nid, zone, start_pfn, nr_pages);
WARN_ON_ONCE(ret);
return ret;
@@ -888,6 +888,8 @@ int devmem_is_allowed(unsigned long pagenr)
{
if (pagenr <= 256)
return 1;
+ if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
+ return 0;
if (!page_is_ram(pagenr))
return 1;
return 0;
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index 8518c678d83..d1f7439d173 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -239,7 +239,7 @@ void resume_map_numa_kva(pgd_t *pgd_base)
start_pfn = node_remap_start_pfn[node];
size = node_remap_size[node];
- printk(KERN_DEBUG "%s: node %d\n", __FUNCTION__, node);
+ printk(KERN_DEBUG "%s: node %d\n", __func__, node);
for (pfn = 0; pfn < size; pfn += PTRS_PER_PTE) {
unsigned long vaddr = start_va + (pfn << PAGE_SHIFT);
@@ -251,7 +251,7 @@ void resume_map_numa_kva(pgd_t *pgd_base)
PAGE_KERNEL_LARGE_EXEC));
printk(KERN_DEBUG "%s: %08lx -> pfn %08lx\n",
- __FUNCTION__, vaddr, start_pfn + pfn);
+ __func__, vaddr, start_pfn + pfn);
}
}
}