[Group.of.nepali.translators] [Bug 1634129] Re: Couldn't emulate instruction 0x7813427c
This bug was fixed in the package linux - 4.4.0-62.83 --- linux (4.4.0-62.83) xenial; urgency=low [ Thadeu Lima de Souza Cascardo ] * Release Tracking Bug - LP: #1657430 * Backport DP MST fixes to i915 (LP: #1657353) - SAUCE: i915_bpo: Fix DP link rate math - SAUCE: i915_bpo: Validate mode against max. link data rate for DP MST * Ubuntu xenial - 4.4.0-59-generic i3 I/O performance issue (LP: #1657281) - blk-mq: really fix plug list flushing for nomerge queues linux (4.4.0-61.82) xenial; urgency=low [ Thadeu Lima de Souza Cascardo ] * Release Tracking Bug - LP: #1656810 * Xen MSI setup code incorrectly re-uses cached pirq (LP: #1656381) - SAUCE: xen: do not re-use pirq number cached in pci device msi msg data * nvme drive probe failure (LP: #1626894) - nvme: revert NVMe: only setup MSIX once linux (4.4.0-60.81) xenial; urgency=low [ John Donnelly ] * Release Tracking Bug - LP: #1656084 * Couldn't emulate instruction 0x7813427c (LP: #1634129) - KVM: PPC: Book3S PR: Fix illegal opcode emulation * perf: 24x7: Eliminate domain name suffix in event names (LP: #1560482) - powerpc/perf/hv-24x7: Fix usage with chip events. - powerpc/perf/hv-24x7: Display change in counter values - powerpc/perf/hv-24x7: Display domain indices in sysfs - powerpc/perf/24x7: Eliminate domain suffix in event names * i386 ftrace tests hang on ADT testing (LP: #1655040) - ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it * VMX module autoloading if available (LP: #1651322) - powerpc: Add module autoloading based on CPU features - crypto: vmx - Convert to CPU feature based module autoloading * ACPI probe support for AD5592/3 configurable multi-channel converter (LP: #1654497) - SAUCE: iio: dac: ad5592r: Add ACPI support - SAUCE: iio: dac: ad5593r: Add ACPI support * Xenial update to v4.4.40 stable release (LP: #1654602) - btrfs: limit async_work allocation and worker func duration - Btrfs: fix tree search logic when replaying directory entry deletes - btrfs: store and load values of stripes_min/stripes_max in balance status item - Btrfs: fix qgroup rescan worker initialization - USB: serial: option: add support for Telit LE922A PIDs 0x1040, 0x1041 - USB: serial: option: add dlink dwm-158 - USB: serial: kl5kusb105: fix open error path - USB: cdc-acm: add device id for GW Instek AFG-125 - usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices - usb: gadget: f_uac2: fix error handling at afunc_bind - usb: gadget: composite: correctly initialize ep->maxpacket - USB: UHCI: report non-PME wakeup signalling for Intel hardware - ALSA: usb-audio: Add QuickCam Communicate Deluxe/S7500 to volume_control_quirks - ALSA: hiface: Fix M2Tech hiFace driver sampling rate change - ALSA: hda/ca0132 - Add quirk for Alienware 15 R2 2016 - ALSA: hda - ignore the assoc and seq when comparing pin configurations - ALSA: hda - fix headset-mic problem on a Dell laptop - ALSA: hda - Gate the mic jack on HP Z1 Gen3 AiO - ALSA: hda: when comparing pin configurations, ignore assoc in addition to seq - clk: ti: omap36xx: Work around sprz319 advisory 2.1 - Btrfs: fix memory leak in reading btree blocks - Btrfs: bail out if block group has different mixed flag - Btrfs: return gracefully from balance if fs tree is corrupted - Btrfs: don't leak reloc root nodes on error - Btrfs: fix memory leak in do_walk_down - Btrfs: don't BUG() during drop snapshot - btrfs: make file clone aware of fatal signals - block_dev: don't test bdev->bd_contains when it is not stable - ptrace: Capture the ptracer's creds not PT_PTRACE_CAP - crypto: caam - fix AEAD givenc descriptors - ext4: fix mballoc breakage with 64k block size - ext4: fix stack memory corruption with 64k block size - ext4: use more strict checks for inodes_per_block on mount - ext4: fix in-superblock mount options processing - ext4: add sanity checking to count_overhead() - ext4: reject inodes with negative size - ext4: return -ENOMEM instead of success - ext4: do not perform data journaling when data is encrypted - f2fs: set ->owner for debugfs status file's file_operations - loop: return proper error from loop_queue_rq() - mm/vmscan.c: set correct defer count for shrinker - fs: exec: apply CLOEXEC before changing dumpable task flags - exec: Ensure mm->user_ns contains the execed files - usb: gadget: composite: always set ep->mult to a sensible value - blk-mq: Do not invoke .queue_rq() for a stopped queue - dm flakey: return -EINVAL on interval bounds error in flakey_ctr() - dm crypt: mark key as invalid until properly loaded - dm space map metadata: fix 'struct sm_metadata' leak on failed create - ASoC: intel: Fix crash at
[Group.of.nepali.translators] [Bug 1634129] Re: Couldn't emulate instruction 0x7813427c
commit fa73c3b25bd8 ("KVM: PPC: Book3s PR: Allow access to unprivileged
MMCR2 register" was part of v4.4.25 stable which was released in
Ubuntu-4.4.0-48.69.
I've submitted commit 708e75a3ee750dce1072134e630d66c4e6eaf63c ('KVM:
PPC: Book3S PR: Fix illegal opcode emulation') for review:
https://lists.ubuntu.com/archives/kernel-team/2017-January/081774.html
** Also affects: linux (Ubuntu Zesty)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Tim Gardner (timg-tpi)
** Changed in: linux (Ubuntu Zesty)
Status: New => Fix Released
** Changed in: linux (Ubuntu Zesty)
Assignee: Taco Screen team (taco-screen-team) => (unassigned)
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https://bugs.launchpad.net/bugs/1634129
Title:
Couldn't emulate instruction 0x7813427c
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
In Progress
Status in linux source package in Zesty:
Fix Released
Bug description:
Couldn't emulate instruction 0x7813427c
---
Cannot boot nested VMs in Xenial or Yakkety w/ kvm accel.
It worked until Vivid (in spite of not being possible in x86)
TCG mode works fine, but very slow.
TCG full emulation is the mode in the x86 world for nested virt.
However, in Power, we've been using in OpenStack CI w/ kvm accel
(native virtualization) to speed up 2nd level VMs. It worked until
Vivid.
Is the case that kvm accel isn't possible anymore for nested virt
(aligned with x86 KVM) ? So full emulation TCG mode is the only
possible mode in newer kernels ?
qemu-system-ppc64le -machine pseries,accel=kvm,usb=off -m 1G -enable-
kvm -cpu POWER8E -display none -nographic cirros-d161007-ppc64le-
disk.img
lsmod |grep kvm
kvm_pr 96452 1
kvm 152984 4 kvm_pr
Nested VM console:
OF stdout device is: /vdevice/vty@7100
Preparing to boot Linux version 4.4.0-28-generic (buildd@bos01-ppc64el-018)
(gcc version 5.3.1 20160413 (Ubuntu/IBM 5.3.1-14ubuntu2.1) ) #47-Ubuntu SMP Fri
Jun 24 10:09:20 UTC 2016 (Ubuntu 4.4.0-28.47-generic 4.4.13)
Detected machine type: 0101
Max number of cores passed to firmware: 2048 (NR_CPUS = 2048)
Calling ibm,client-architecture-support... done
command line: BOOT_IMAGE=/boot/vmlinux-4.4.0-28-generic LABEL=cirros-rootfs ro
memory layout at init:
memory_limit : (16 MB aligned)
alloc_bottom : 0421
alloc_top: 1000
alloc_top_hi : 4000
rmo_top : 1000
ram_top : 4000
found display : /pci@8002000/vga@0, opening... done
instantiating rtas at 0x0daf... done
prom_hold_cpus: skipped
copying OF device tree...
Building dt strings...
Building dt structure...
Device tree strings 0x0422 -> 0x04220aa9
Device tree struct 0x0423 -> 0x0424
Quiescing Open Firmware ...
Booting Linux via __start() ?
/var/log/syslog & /var/log/kern.log
Oct 13 14:07:38 patricia-ub16-10 kernel: [64072.186975]
kvmppc_handle_exit_pr: emulation at 700 failed (7813427c)
Oct 13 14:07:38 patricia-ub16-10 kernel: [64072.187023] Couldn't emulate
instruction 0x7813427c (op 30 xop 318)
Oct 13 14:07:38 patricia-ub16-10 kernel: [64072.187066]
kvmppc_handle_exit_pr: emulation at 700 failed (7813427c)
Oct 13 14:07:38 patricia-ub16-10 kernel: [64072.187113] Couldn't emulate
instruction 0x7813427c (op 30 xop 318)
Oct 13 14:07:38 patricia-ub16-10 kernel: [64072.187156]
kvmppc_handle_exit_pr: emulation at 700 failed (7813427c)
Host:
cpu : POWER8E (raw), altivec supported
clock : 3690.00MHz
revision : 2.1 (pvr 004b 0201)
timebase : 51200
platform : PowerNV
model : 8247-22L
machine : PowerNV 8247-22L
firmware : OPAL v3
Guest: Xenial or Yakkety
Description: Ubuntu 16.10
Release: 16.10
Codename: yakkety
Nested VM:
CirrOS
http://download.cirros-cloud.net/daily/20161007/cirros-d161007-ppc64le-disk.img
This seems to be related
https://patchwork.kernel.org/patch/9121881/
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