** Also affects: linux (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: linux (Ubuntu Utopic)
Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: linux (Ubuntu Trusty)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Utopic)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Trusty)
Status: New => In Progress
** Changed in: linux (Ubuntu Utopic)
Status: New => In Progress
** Description changed:
+ [Impact]
---Problem Description---
The commit 3b8a3c010969 ("powerpc/pseries: Fix endiannes issue in RTAS call
from xmon") was fixing an endianness issue in the call made from xmon to RTAS.
However, as Michael Ellerman noticed, this fix was not complete, the token
value was not byte swapped. This lead to call an unexpected and most of the
time unexisting RTAS function, which is silently ignored by RTAS.
+ [Test Case]
+ # echo x > /proc/sysrq-trigger
+ This should put us in the xmon debugger without errors.
+
+ [Fix]
This bug is opened to ensure Linux distro will taking up this upstream patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e6eb2eba494d6f99e69ca3c3748cd37a2544ab38
-
+
This bug is affecting Ubuntu 15.04 and 15.10.
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https://bugs.launchpad.net/bugs/1415919
Title:
Ubuntu - Fixing RTAS call from xmon (running ppc64le on PowerVM)
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