[PATCH v8 15/16] ARM: LPAE: add support for ATAG_MEM64

On Tue, Nov 08, 2011 at 04:54:35PM +0000, Stephen Boyd wrote:

On 11/7/2011 8:16 AM, Catalin Marinas wrote:

quoted

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 7e7977a..223af71 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c

@@ -638,6 +638,29 @@ static int __init parse_tag_mem32(const struct tag *tag)
 
 __tagtable(ATAG_MEM, parse_tag_mem32);
 
+static int __init parse_tag_mem64(const struct tag *tag)
+{
+	/* We only use 32-bits for the size. */
+	unsigned long size;
+	phys_addr_t start, end;
+
+	start = tag->u.mem64.start;
+	size = tag->u.mem64.size;
+	end = start + size;
+
+	/* Ensure that the memory region is in range. */
+	if (end & ~PHYS_MASK)
+		pr_warning("Ignoring out-of-range mem64 tag (%.8llx-%.8llx)\n",

Can you add 0x (or #) here so we can see the 0x hex part?

There are some inconsistencies across the kernel, we just used the
printk format found in sanity_check_meminfo(). I don't have a problem
with changing this, though maybe some separate clean-up patch would be
better.

-- 
Catalin