From: <gregkh@linuxfoundation.org>
To: <stefan.haberland@de.ibm.com>, <gregkh@linuxfoundation.org>,
<schwidefsky@de.ibm.com>
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "s390/dasd: prevent incorrect length error under z/VM after PAV changes" has been added to the 3.14-stable tree
Date: Tue, 01 Mar 2016 18:36:43 +0000 [thread overview]
Message-ID: <145685740119325@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
s390/dasd: prevent incorrect length error under z/VM after PAV changes
to the 3.14-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-dasd-prevent-incorrect-length-error-under-z-vm-after-pav-changes.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 020bf042e5b397479c1174081b935d0ff15d1a64 Mon Sep 17 00:00:00 2001
From: Stefan Haberland <stefan.haberland@de.ibm.com>
Date: Tue, 15 Dec 2015 10:16:43 +0100
Subject: s390/dasd: prevent incorrect length error under z/VM after PAV changes
From: Stefan Haberland <stefan.haberland@de.ibm.com>
commit 020bf042e5b397479c1174081b935d0ff15d1a64 upstream.
The channel checks the specified length and the provided amount of
data for CCWs and provides an incorrect length error if the size does
not match. Under z/VM with simulation activated the length may get
changed. Having the suppress length indication bit set is stated as
good CCW coding practice and avoids errors under z/VM.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/block/dasd_alias.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -722,7 +722,7 @@ static int reset_summary_unit_check(stru
ASCEBC((char *) &cqr->magic, 4);
ccw = cqr->cpaddr;
ccw->cmd_code = DASD_ECKD_CCW_RSCK;
- ccw->flags = 0 ;
+ ccw->flags = CCW_FLAG_SLI;
ccw->count = 16;
ccw->cda = (__u32)(addr_t) cqr->data;
((char *)cqr->data)[0] = reason;
Patches currently in stable-queue which might be from stefan.haberland@de.ibm.com are
queue-3.14/s390-dasd-prevent-incorrect-length-error-under-z-vm-after-pav-changes.patch
queue-3.14/s390-dasd-fix-refcount-for-pav-reassignment.patch
reply other threads:[~2016-03-01 18:36 UTC|newest]
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