** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Tim Gardner (timg-tpi)
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https://bugs.launchpad.net/bugs/1541534
Title:
s390/cio: update measurement characteristics
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Xenial:
Fix Committed
Bug description:
Description: s390/cio: update measurement characteristics
Symptom: lschp shows stale information in the "Cmg" and "Shared"
column.
Problem: Measurement characteristics are read only during IPL
and are not updated when capabilities of a chpid change.
Solution: Keep measurement characteristics up to date.
Reproduction: chchp -c 1 <chpid> ; lschp
Upstream-ID: 0d9bfe9123cfde59bf5c2e375b59d2a7d5061c4c
61f0bfcf8020f02eb09adaef96745d1c1d1b3623
9f3d6d7a40a178b8a5b5274f4e55fec8c30147c9
Please integrate the following upstream commit IDs into the Ubuntu
kernel:
commit 0d9bfe9123cfde59bf5c2e375b59d2a7d5061c4c
Author: Sebastian Ott <seb...@linux.vnet.ibm.com>
Date: Mon Jan 25 10:30:27 2016 +0100
s390/cio: fix measurement characteristics memleak
Measurement characteristics are allocated during channel path
registration but not freed during deregistration. Fix this by
embedding these characteristics inside struct channel_path.
Signed-off-by: Sebastian Ott <seb...@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <ober...@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidef...@de.ibm.com>
commit 61f0bfcf8020f02eb09adaef96745d1c1d1b3623
Author: Sebastian Ott <seb...@linux.vnet.ibm.com>
Date: Mon Jan 25 10:31:33 2016 +0100
s390/cio: ensure consistent measurement state
Make sure that in all cases where we could not obtain measurement
characteristics the associated fields are set to invalid values.
Note: without this change the "shared" capability of a channel path
for which we could not obtain the measurement characteristics was
incorrectly displayed as 0 (not shared). We will now correctly
report "unknown" in this case.
Signed-off-by: Sebastian Ott <seb...@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <ober...@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidef...@de.ibm.com>
commit 9f3d6d7a40a178b8a5b5274f4e55fec8c30147c9
Author: Sebastian Ott <seb...@linux.vnet.ibm.com>
Date: Mon Jan 25 10:32:51 2016 +0100
s390/cio: update measurement characteristics
Per channel path measurement characteristics are obtained during channel
path registration. However if some properties of a channel path change
we don't update the measurement characteristics.
Make sure to update the characteristics when we change the properties of
a channel path or receive a notification from FW about such a change.
Signed-off-by: Sebastian Ott <seb...@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <ober...@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidef...@de.ibm.com>
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