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Bug 1304377 - Fedora - QEMU gdbserver cannot access VSX registers
Summary: Fedora - QEMU gdbserver cannot access VSX registers
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: qemu
Version: 23
Hardware: All
OS: Linux
unspecified
high
Target Milestone: ---
Assignee: Fedora Virtualization Maintainers
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On: 1305512
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-02-03 12:50 UTC by IBM Bug Proxy
Modified: 2016-02-21 16:24 UTC (History)
13 users (show)

Fixed In Version: qemu-2.4.1-7.fc23
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-02-21 12:59:21 UTC
Type: ---
Embargoed:

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System ID Private Priority Status Summary Last Updated
IBM Linux Technology Center 126162 0 None None None 2016-02-03 12:50:50 UTC

Description IBM Bug Proxy 2016-02-03 12:50:34 UTC
Comment 1 IBM Bug Proxy 2016-02-03 12:50:44 UTC 
A customer with Fedora 22 x86_64 and qemu-ppc64le 2.1.3 running AT8.0.3 gdb connected to QEMU gdbserver (QEMU running with '-g <port-number>' option) is unable to access part of the ppc64le registers.

Here is the output when trying to access VSX registers:

i r $vs0
Invalid register `vs0'

i r vs0
Invalid register `vs0'

i r $vs32
Invalid register `vs32'

i r $vr0
vr0            {uint128 = 0x00000000000000000000000000000000, v4_float =
{0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int8 = {0x0 <repeats 16 times>}}


Here are the upstream QEMU commits to fix TCG guests on all platforms:

http://git.qemu.org/?p=qemu.git;a=commit;h=376dbce0e3abe456fb8c7a3cd40dc369f8b33d30
http://git.qemu.org/?p=qemu.git;a=commit;h=385abeb3e356452eace44f3fe15e18c2532dcaa7
http://git.qemu.org/?p=qemu.git;a=commit;h=87601e2d5c22d9c1fef0e09978d377f46336c1db
http://git.qemu.org/?p=qemu.git;a=commit;h=ea499e71506c91aa259a7fdccf1d6b2022f5b530
http://git.qemu.org/?p=qemu.git;a=commit;h=95f5b540abd964ac3bc9c63434d07681a5a175eb
http://git.qemu.org/?p=qemu.git;a=commit;h=1438eff302cbc6c85d477fd7181b8a9aeea2efd7

The following patch is also required to fix KVM guests on ppc64le platforms:

http://git.qemu.org/?p=qemu.git;a=commit;h=3a4b791b4c13e02537a5cc572fa3de70bc5f68da
Comment 2 IBM Bug Proxy 2016-02-08 13:21:06 UTC 
------- Comment From MENANTEA.com 2016-02-08 08:19 EDT-------
I tried to build qemu-2.5.0-4 in koji based on fedora f24/rawhide including patches corresponding to commits described above but I get another problem on qemu build (not related to commits) referenced as:
https://bugzilla.redhat.com/show_bug.cgi?id=1305512
Comment 3 Fedora Update System 2016-02-16 14:14:05 UTC 
qemu-2.4.1-7.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b49aaf2c56
Comment 4 Fedora Update System 2016-02-17 06:27:12 UTC 
qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b49aaf2c56
Comment 5 Fedora Update System 2016-02-21 12:58:05 UTC 
qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2016-02-21 16:18:40 UTC 
qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2016-02-21 16:24:43 UTC 
qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
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