Patch "MIPS: Malta: Detect and fix bad memsize values" has been added to the 4.0-stable tree

This is a note to let you know that I've just added the patch titled

MIPS: Malta: Detect and fix bad memsize values

to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
mips-malta-detect-and-fix-bad-memsize-values.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Markos Chandras <[email protected]>
Date: Fri, 27 Feb 2015 07:51:32 +0000
Subject: MIPS: Malta: Detect and fix bad memsize values

From: Markos Chandras <[email protected]>

commit f7f8aea4b97c4d48e42f02cb37026bee445f239f upstream.

memsize denotes the amount of RAM we can access from kseg{0,1} and that should be up to 256M. In case the bootloader reports a value higher than that (perhaps reporting all the available RAM) it's best if we fix it ourselves and just warn the user about that. This is usually a problem with the bootloader and/or its environment.

[[email protected]: Remove useless parens as suggested bei Sergei. Reformat long pr_warn statement to fit into 80 column limit.]

Patchwork: https://patchwork.linux-mips.org/patch/9362/

---
 arch/mips/mti-malta/malta-memory.c |    6 ++++++
 1 file changed, 6 insertions(+)

@@ -53,6 +53,12 @@ fw_memblock_t * __init fw_getmdesc(int e
 		pr_warn("memsize not set in YAMON, set to default (32Mb)\n");
 		physical_memsize = 0x02000000;
 	} else {
+		if (memsize > (256 << 20)) { /* memsize should be capped to 256M */
+			pr_warn("Unsupported memsize value (0x%lx) detected! "
+				"Using 0x10000000 (256M) instead\n",
+				memsize);
+			memsize = 256 << 20;
+		}
 		/* If ememsize is set, then set physical_memsize to that */
 		physical_memsize = ememsize ? : memsize;
 	}

Patches currently in stable-queue which might be from [email protected] are

queue-4.0/mips-unaligned-fix-regular-load-store-instruction-emulation-for-eva.patch queue-4.0/mips-unaligned-prevent-eva-instructions-on-kernel-unaligned-accesses.patch queue-4.0/mips-malta-detect-and-fix-bad-memsize-values.patch queue-4.0/mips-unaligned-surround-load-store-macros-in-do-while-statements.patch queue-4.0/mips-asm-asm-eva-introduce-kernel-load-store-variants.patch