Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=80a68a...
Commit: 80a68a43d90e2221599b507b6b26c3cba1957687
Parent: 74d99a5e262229ee865f6f68528d10b82471ead6
Author: Stuart Menefy <stuart.menefy@st.com>
AuthorDate: Mon Nov 26 21:16:09 2007 +0900
Committer: Paul Mundt <lethal@linux-sh.org>
CommitDate: Mon Jan 28 13:18:57 2008 +0900
sh: Add a printk() to warn legacy mem= growers.
mem= can't be used to grow the size of kernel memory, so provide a
warning to that effect.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
arch/sh/kernel/setup.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 6891cc9..7eb7fdc 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -84,6 +84,17 @@ static int __init early_parse_mem(char *p)
memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
size = memparse(p, &p);
+
+ if (size > __MEMORY_SIZE) {
+ static char msg[] __initdata = KERN_ERR
+ "Using mem= to increase the size of kernel memory "
+ "is not allowed.\n"
+ " Recompile the kernel with the correct value for "
+ "CONFIG_MEMORY_SIZE.\n";
+ printk(msg);
+ return 0;
+ }
+
memory_end = memory_start + size;
return 0;
-
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