Patch "powerpc/mm: Fixup wrong LPCR_VRMASD value" has been added to the 4.9-stable tree

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

powerpc/mm: Fixup wrong LPCR_VRMASD value

to the 4.9-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:
powerpc-mm-fixup-wrong-lpcr_vrmasd-value.patch
and it can be found in the queue-4.9 subdirectory.

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

From: "Aneesh Kumar K.V" <[email protected]>
Date: Thu, 8 Dec 2016 09:12:13 +0530
Subject: powerpc/mm: Fixup wrong LPCR_VRMASD value

From: Aneesh Kumar K.V <[email protected]>

commit 4ab2537c4204b976e4ca350bbdc193b4649cad28 upstream.

In commit a4b349540a26af ("powerpc/mm: Cleanup LPCR defines") we updated LPCR_VRMASD wrongly as below.

-#define   LPCR_VRMASD  (0x1ful << (63-16))
+#define   LPCR_VRMASD_SH       47
+#define   LPCR_VRMASD          (ASM_CONST(1) << LPCR_VRMASD_SH)

We initialize the VRMA bits in LPCR to 0x00 in kvm. Hence using a different mask value as above while updating lpcr should not have any impact.

This patch updates it to the correct value.

---
 arch/powerpc/include/asm/reg.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -337,7 +337,7 @@
 #define   LPCR_DPFD_SH		52
 #define   LPCR_DPFD		(ASM_CONST(7) << LPCR_DPFD_SH)
 #define   LPCR_VRMASD_SH	47
-#define   LPCR_VRMASD		(ASM_CONST(1) << LPCR_VRMASD_SH)
+#define   LPCR_VRMASD		(ASM_CONST(0x1f) << LPCR_VRMASD_SH)
 #define   LPCR_VRMA_L		ASM_CONST(0x0008000000000000)
 #define   LPCR_VRMA_LP0		ASM_CONST(0x0001000000000000)
 #define   LPCR_VRMA_LP1		ASM_CONST(0x0000800000000000)

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

queue-4.9/powerpc-mm-fixup-wrong-lpcr_vrmasd-value.patch