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[Qemu-devel] [Bug 608107] Re: ppc fails to clear MSR_POW when incurring
From: |
Thomas Huth |
Subject: |
[Qemu-devel] [Bug 608107] Re: ppc fails to clear MSR_POW when incurring exception |
Date: |
Mon, 31 Oct 2016 09:11:22 -0000 |
As far as I can see, this problem has been fixed by this commit here:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=41557447d30eeb944e4
... so I'm setting the status to "Fix released" now.
** Changed in: qemu
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/608107
Title:
ppc fails to clear MSR_POW when incurring exception
Status in QEMU:
Fix Released
Bug description:
QEMU VERSION: 0.12.4
According to FreeScale's 'Programming Environments Manual for 32-bit
Implementations of the PowerPC Architecture' [MPCFPE32B, Rev.3, 9/2005],
section 6.5, table 6-7, an interrupt resets MSR_POW to zero but qemu-0.12.4
fails to do so.
Resetting the bit is necessary in order to bring the processor out of
power-management since otherwise it goes to sleep right away in the exception
handler, i.e., it is impossible to leave PM-mode.
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