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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-18 12:03:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-18 12:03:23 -0700
commit1de481ded98d1d48e2a4102a5aa549e3c4d18ee3 (patch)
treedefeccfeac5a86c349f4cac61a8689f3597d3201
parentabcf42419d24416175ea8bc9a502d833f64955d1 (diff)
parentebb1951d3624c2f961abe676645c13e5a1145569 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: lmb: Fix reserved region handling in lmb_enforce_memory_limit(). sparc64: Fix cmdline_memory_size handling bugs. sparc64: Fix overshoot in nid_range().
-rw-r--r--arch/sparc64/mm/init.c30
-rw-r--r--lib/lmb.c2
2 files changed, 24 insertions, 8 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 217de3ea29e..b4aeb0f696d 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -796,6 +796,9 @@ static unsigned long nid_range(unsigned long start, unsigned long end,
start += PAGE_SIZE;
}
+ if (start > end)
+ start = end;
+
return start;
}
#else
@@ -1723,8 +1726,7 @@ void __init paging_init(void)
find_ramdisk(phys_base);
- if (cmdline_memory_size)
- lmb_enforce_memory_limit(phys_base + cmdline_memory_size);
+ lmb_enforce_memory_limit(cmdline_memory_size);
lmb_analyze();
lmb_dump_all();
@@ -1961,6 +1963,15 @@ void __init mem_init(void)
void free_initmem(void)
{
unsigned long addr, initend;
+ int do_free = 1;
+
+ /* If the physical memory maps were trimmed by kernel command
+ * line options, don't even try freeing this initmem stuff up.
+ * The kernel image could have been in the trimmed out region
+ * and if so the freeing below will free invalid page structs.
+ */
+ if (cmdline_memory_size)
+ do_free = 0;
/*
* The init section is aligned to 8k in vmlinux.lds. Page align for >8k pagesizes.
@@ -1975,13 +1986,16 @@ void free_initmem(void)
((unsigned long) __va(kern_base)) -
((unsigned long) KERNBASE));
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
- p = virt_to_page(page);
- ClearPageReserved(p);
- init_page_count(p);
- __free_page(p);
- num_physpages++;
- totalram_pages++;
+ if (do_free) {
+ p = virt_to_page(page);
+
+ ClearPageReserved(p);
+ init_page_count(p);
+ __free_page(p);
+ num_physpages++;
+ totalram_pages++;
+ }
}
}
diff --git a/lib/lmb.c b/lib/lmb.c
index 5d7b9286503..97e54703708 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -462,6 +462,8 @@ void __init lmb_enforce_memory_limit(u64 memory_limit)
if (lmb.memory.region[0].size < lmb.rmo_size)
lmb.rmo_size = lmb.memory.region[0].size;
+ memory_limit = lmb_end_of_DRAM();
+
/* And truncate any reserves above the limit also. */
for (i = 0; i < lmb.reserved.cnt; i++) {
p = &lmb.reserved.region[i];