This is a note to let you know that I've just added the patch titled
s390/pci: add extra padding to function measurement block
to the 4.4-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:
s390-pci-add-extra-padding-to-function-measurement-block.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9d89d9e61d361f3adb75e1aebe4bb367faf16cfa Mon Sep 17 00:00:00 2001
From: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
Date: Thu, 31 Mar 2016 11:48:31 +0200
Subject: s390/pci: add extra padding to function measurement block
From: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
commit 9d89d9e61d361f3adb75e1aebe4bb367faf16cfa upstream.
Newer machines might use a different (larger) format for function
measurement blocks. To ensure that we comply with the alignment
requirement on these machines and prevent memory corruption (when
firmware writes more data than we expect) add 16 padding bytes
at the end of the fmb.
Signed-off-by: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/s390/include/asm/pci.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -45,7 +45,8 @@ struct zpci_fmb {
u64 rpcit_ops;
u64 dma_rbytes;
u64 dma_wbytes;
-} __packed __aligned(64);
+ u64 pad[2];
+} __packed __aligned(128);
enum zpci_state {
ZPCI_FN_STATE_RESERVED,
Patches currently in stable-queue which might be from sebott@xxxxxxxxxxxxxxxxxx are
queue-4.4/s390-pci-add-extra-padding-to-function-measurement-block.patch
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