[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
** Changed in: ubuntu-z-systems Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Released Status in linux source package in Impish: Fix Released Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
This bug was fixed in the package linux - 5.4.0-109.123
---
linux (5.4.0-109.123) focal; urgency=medium
* focal/linux: 5.4.0-109.123 -proposed tracker (LP: #1968290)
* USB devices not detected during boot on USB 3.0 hubs (LP: #1968210)
- SAUCE: Revert "Revert "xhci: Set HCD flag to defer primary roothub
registration""
- SAUCE: Revert "Revert "usb: core: hcd: Add support for deferring roothub
registration""
linux (5.4.0-108.122) focal; urgency=medium
* focal/linux: 5.4.0-108.122 -proposed tracker (LP: #1966740)
* Packaging resync (LP: #1786013)
- [Packaging] resync dkms-build{,--nvidia-N} from LRMv5
- debian/dkms-versions -- update from kernel-versions (main/2022.03.21)
* Low RX performance for 40G Solarflare NICs (LP: #1964512)
- SAUCE: sfc: The size of the RX recycle ring should be more flexible
* [UBUNTU 20.04] KVM: Enable storage key checking for intercepted instruction
(LP: #1962831)
- selftests: kvm: add _vm_ioctl
- selftests: kvm: Introduce the TEST_FAIL macro
- KVM: selftests: Add GUEST_ASSERT variants to pass values to host
- KVM: s390: gaccess: Refactor gpa and length calculation
- KVM: s390: gaccess: Refactor access address range check
- KVM: s390: gaccess: Cleanup access to guest pages
- s390/uaccess: introduce bit field for OAC specifier
- s390/uaccess: fix compile error
- s390/uaccess: Add copy_from/to_user_key functions
- KVM: s390: Honor storage keys when accessing guest memory
- KVM: s390: handle_tprot: Honor storage keys
- KVM: s390: selftests: Test TEST PROTECTION emulation
- KVM: s390: Add optional storage key checking to MEMOP IOCTL
- KVM: s390: Add vm IOCTL for key checked guest absolute memory access
- KVM: s390: Rename existing vcpu memop functions
- KVM: s390: Add capability for storage key extension of MEM_OP IOCTL
- KVM: s390: Update api documentation for memop ioctl
- KVM: s390: Clarify key argument for MEM_OP in api docs
- KVM: s390: Add missing vm MEM_OP size check
* 【sec-0911】 fail to reset sec module (LP: #1943301)
- crypto: hisilicon/sec2 - Add workqueue for SEC driver.
- crypto: hisilicon/sec2 - update SEC initialization and reset
* Lots of hisi_qm zombie task slow down system after stress test
(LP: #1932117)
- crypto: hisilicon - Use one workqueue per qm instead of per qp
* Lots of hisi_qm zombie task slow down system after stress test
(LP: #1932117) // 【sec-0911】 fail to reset sec module (LP: #1943301)
- crypto: hisilicon - Unify hardware error init/uninit into QM
* [UBUNTU 20.04] Fix SIGP processing on KVM/s390 (LP: #1962578)
- KVM: s390: Simplify SIGP Set Arch handling
- KVM: s390: Add a routine for setting userspace CPU state
* Move virtual graphics drivers from linux-modules-extra to linux-modules
(LP: #1960633)
- [Packaging] Move VM DRM drivers into modules
* Focal update: v5.4.178 upstream stable release (LP: #1964634)
- audit: improve audit queue handling when "audit=1" on cmdline
- ASoC: ops: Reject out of bounds values in snd_soc_put_volsw()
- ASoC: ops: Reject out of bounds values in snd_soc_put_volsw_sx()
- ASoC: ops: Reject out of bounds values in snd_soc_put_xr_sx()
- ALSA: usb-audio: Simplify quirk entries with a macro
- ALSA: hda/realtek: Add quirk for ASUS GU603
- ALSA: hda/realtek: Add missing fixup-model entry for Gigabyte X570 ALC1220
quirks
- ALSA: hda/realtek: Fix silent output on Gigabyte X570S Aorus Master (newer
chipset)
- ALSA: hda/realtek: Fix silent output on Gigabyte X570 Aorus Xtreme after
reboot from Windows
- btrfs: fix deadlock between quota disable and qgroup rescan worker
- drm/nouveau: fix off by one in BIOS boundary checking
- mm/kmemleak: avoid scanning potential huge holes
- block: bio-integrity: Advance seed correctly for larger interval sizes
- memcg: charge fs_context and legacy_fs_context
- IB/rdmavt: Validate remote_addr during loopback atomic tests
- RDMA/siw: Fix broken RDMA Read Fence/Resume logic.
- RDMA/mlx4: Don't continue event handler after memory allocation failure
- iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()
- iommu/amd: Fix loop timeout issue in iommu_ga_log_enable()
- spi: bcm-qspi: check for valid cs before applying chip select
- spi: mediatek: Avoid NULL pointer crash in interrupt
- spi: meson-spicc: add IRQ check in meson_spicc_probe
- net: ieee802154: hwsim: Ensure proper channel selection at probe time
- net: ieee802154: mcr20a: Fix lifs/sifs periods
- net: ieee802154: ca8210: Stop leaking skb's
- net: ieee802154: Return meaningful error codes from the netlink helpers
- net: macsec: Verify that send_sci is on when setting Tx sci explicitly
- net: stmmac: dump gmac4 DMA registers correctly
- net: stmmac: ensure PTP time register reads are consistent
-
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
This bug was fixed in the package linux - 5.13.0-40.45 --- linux (5.13.0-40.45) impish; urgency=medium * impish/linux: 5.13.0-40.45 -proposed tracker (LP: #1966701) * CVE-2022-1016 - netfilter: nf_tables: initialize registers in nft_do_chain() * CVE-2022-1015 - netfilter: nf_tables: validate registers coming from userspace. * audit: improve audit queue handling when "audit=1" on cmdline (LP: #1965723) // Impish update: upstream stable patchset 2022-03-22 (LP: #1966021) - audit: improve audit queue handling when "audit=1" on cmdline * PS/2 Keyboard wakeup from s2idle not functioning on AMD Yellow Carp platform (LP: #1961739) - PM: s2idle: ACPI: Fix wakeup interrupts handling * Low RX performance for 40G Solarflare NICs (LP: #1964512) - SAUCE: sfc: The size of the RX recycle ring should be more flexible * [UBUNTU 20.04] Fix SIGP processing on KVM/s390 (LP: #1962578) - KVM: s390: Simplify SIGP Set Arch handling - KVM: s390: Add a routine for setting userspace CPU state * Move virtual graphics drivers from linux-modules-extra to linux-modules (LP: #1960633) - [Packaging] Move VM DRM drivers into modules * Impish update: upstream stable patchset 2022-03-09 (LP: #1964422) - bnx2x: Utilize firmware 7.13.21.0 - bnx2x: Invalidate fastpath HSI version for VFs - rcu: Tighten rcu_advance_cbs_nowake() checks - select: Fix indefinitely sleeping task in poll_schedule_timeout() - drm/amdgpu: Use correct VIEWPORT_DIMENSION for DCN2 - arm64/bpf: Remove 128MB limit for BPF JIT programs - Bluetooth: refactor malicious adv data check - net: sfp: ignore disabled SFP node - net: stmmac: skip only stmmac_ptp_register when resume from suspend - s390/hypfs: include z/VM guests with access control group set - bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() - scsi: zfcp: Fix failed recovery on gone remote port with non-NPIV FCP devices - udf: Restore i_lenAlloc when inode expansion fails - udf: Fix NULL ptr deref when converting from inline format - efi: runtime: avoid EFIv2 runtime services on Apple x86 machines - PM: wakeup: simplify the output logic of pm_show_wakelocks() - tracing/histogram: Fix a potential memory leak for kstrdup() - tracing: Don't inc err_log entry count if entry allocation fails - ceph: properly put ceph_string reference after async create attempt - ceph: set pool_ns in new inode layout for async creates - fsnotify: fix fsnotify hooks in pseudo filesystems - Revert "KVM: SVM: avoid infinite loop on NPF from bad address" - perf/x86/intel/uncore: Fix CAS_COUNT_WRITE issue for ICX - drm/etnaviv: relax submit size limits - KVM: x86: Update vCPU's runtime CPUID on write to MSR_IA32_XSS - netfilter: nft_payload: do not update layer 4 checksum when mangling fragments - serial: 8250: of: Fix mapped region size when using reg-offset property - serial: stm32: fix software flow control transfer - tty: n_gsm: fix SW flow control encoding/handling - tty: Add support for Brainboxes UC cards. - usb-storage: Add unusual-devs entry for VL817 USB-SATA bridge - usb: xhci-plat: fix crash when suspend if remote wake enable - usb: common: ulpi: Fix crash in ulpi_match() - usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS - USB: core: Fix hang in usb_kill_urb by adding memory barriers - usb: typec: tcpm: Do not disconnect while receiving VBUS off - ucsi_ccg: Check DEV_INT bit only when starting CCG4 - jbd2: export jbd2_journal_[grab|put]_journal_head - ocfs2: fix a deadlock when commit trans - sched/membarrier: Fix membarrier-rseq fence command missing from query bitmask - x86/MCE/AMD: Allow thresholding interface updates after init - powerpc/32s: Allocate one 256k IBAT instead of two consecutives 128k IBATs - powerpc/32s: Fix kasan_init_region() for KASAN - powerpc/32: Fix boot failure with GCC latent entropy plugin - i40e: Increase delay to 1 s after global EMP reset - i40e: Fix issue when maximum queues is exceeded - i40e: Fix queues reservation for XDP - i40e: Fix for failed to init adminq while VF reset - i40e: fix unsigned stat widths - usb: roles: fix include/linux/usb/role.h compile issue - rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev - rpmsg: char: Fix race between the release of rpmsg_eptdev and cdev - scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put() - ipv6_tunnel: Rate limit warning messages - net: fix information leakage in /proc/net/ptype - hwmon: (lm90) Mark alert as broken for MAX6646/6647/6649 - hwmon: (lm90) Mark alert as broken for MAX6680 - ping: fix the sk_bound_dev_if match in ping_lookup - ipv4: avoid using shared IP generator for connected sockets - hwmon: (lm90) Reduce maximum
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
This bug was opened for focal and impish, bionic was not really requested and is not marked as affected, so I'm setting the verification-done-bionic tag to unblock further SRU processing. ** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
This bug is awaiting verification that the linux- hwe-5.4/5.4.0-107.121~18.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
Thank you Eric for the verifications! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
--- Comment From far...@us.ibm.com 2022-03-23 11:42 EDT--- Verified with the assistance of kvm-unit-tests patches described here: https://lore.kernel.org/r/20220311173822.1234617-1-far...@linux.ibm.com/ ...and further examination of the s390dbf/kvm- contents for a running guest. Rolled back the kernel version on each release to ensure I had a "bad" state, as well as the version in -proposed. Everything behaves as I expected. THANK YOU! Tested Focal: 5.4.0-100.113 (FAILS) 5.4.0-106.120 (WORKS) Tested Impish: 5.13.0-30.33 (FAILS) 5.13.0-38.43 (WORKS) ** Tags removed: verification-needed-focal verification-needed-impish ** Tags added: verification-done-focal verification-done-impish -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
This bug is awaiting verification that the linux/5.4.0-106.120 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
This bug is awaiting verification that the linux/5.13.0-38.43 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-impish' to 'verification-done-impish'. If the problem still exists, change the tag 'verification-needed-impish' to 'verification-failed-impish'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-impish ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
** Tags removed: targetmilestone-inin--- ** Tags added: targetmilestone-inin2004 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
** Changed in: ubuntu-z-systems Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
** Changed in: linux (Ubuntu Impish) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Focal) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Impish) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Focal) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Impish: Fix Committed Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture definition and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. * The fix for this consists of three patches: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" whereas 812de04661c4 already landed via upstream stable, hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU state control in general. * The SIGP handing (on s390x) can become broken, which could lead to incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, no common code is touched. [Other] * The two remaining patches are upstream since 5.16, the first one already landed in 5.4 via upstream stable bug LP#1959701 and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, hence only SRU to impish and focal is needed. * This patches got discussed here: https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
** Description changed: SRU Justification: == [Impact] - * The SIGP processing on KVM/s390x is incorrect and not fully conformant to - the 'Principles of Operations', the IBM Z architecture definition - and documentation. + * The SIGP processing on KVM/s390x is incorrect and not fully conform to + the 'Principles of Operations', the IBM Z architecture definition + and documentation. * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART - was issued, while it should report a 'busy' condition until the CPU is - really started. + was issued, while it should report a 'busy' condition until the CPU is + really started. * The fix for this consists of three patches: - 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" - 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" - 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" - whereas 812de04661c4 already landed via upstream stable, - hence only two are left and need to be cherry-picked: + 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" + 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" + 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" + whereas 812de04661c4 already landed via upstream stable, + hence only two are left and need to be cherry-picked: [Fix] * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add a routine for setting userspace CPU state" * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: Simplify SIGP Set Arch handling" [Test Case] * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) - with Ubuntu Server 20.04 using kernel standard kernel 5.4. + with Ubuntu Server 20.04 using kernel standard kernel 5.4. * Setup this LPAR as QEMU/KVM host and a focal VM as guest. * The test itself is the following unit test: - https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ + https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ * The test and verification will be done by the IBM Z team. [Where problems could occur] - - * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU - state control in general. + state control in general. * The SIGP handing (on s390x) can become broken, which could lead to - incorrect (virtual) CPU states. + incorrect (virtual) CPU states. * In worst case KVM can become broken on s390x entirely. * The modified code is all s390x specific QEMU/KVM code, - no common code is touched. + no common code is touched. [Other] * The two remaining patches are upstream since 5.16, - the first one already landed in 5.4 via upstream stable bug LP#1959701 - and in 5.13 via upstream stable bug LP#1960861. + the first one already landed in 5.4 via upstream stable bug LP#1959701 + and in 5.13 via upstream stable bug LP#1960861. * The patches already landed in jammy (master-next) based on LP#1959735, - hence only SRU to impish and focal is needed. + hence only SRU to impish and focal is needed. * This patches got discussed here: - https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ + https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ * This not only fixes the SIGP processing, but is also important in terms of - long term maintainability. + long term maintainability. __ Description: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master-next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: In Progress Status in linux source package in Impish: In Progress Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conform to the 'Principles of Operations', the IBM Z architecture
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
SRU request submitted to the Ubuntu kernel team mailing list for impish and focal: https://lists.ubuntu.com/archives/kernel-team/2022-March/thread.html#128449 Changing status to 'In Progress' for impish and focal. ** Changed in: linux (Ubuntu) Status: In Progress => Fix Released ** Changed in: linux (Ubuntu Focal) Status: New => In Progress ** Changed in: linux (Ubuntu Impish) Status: New => In Progress ** Changed in: ubuntu-z-systems Status: New => In Progress ** Description changed: - Decription: -KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. + SRU Justification: + == - The patches to fix this have already been picked for jammy/master-next: + [Impact] + + * The SIGP processing on KVM/s390x is incorrect and not fully conformant to + the 'Principles of Operations', the IBM Z architecture definition + and documentation. + + * KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART + was issued, while it should report a 'busy' condition until the CPU is + really started. + + * The fix for this consists of three patches: + 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" + 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" + 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" + whereas 812de04661c4 already landed via upstream stable, + hence only two are left and need to be cherry-picked: + + [Fix] + + * 67cf68b6a5ccac8bc7dfef0a220b59af4c83fd2c 67cf68b6a5cc "KVM: s390: Add + a routine for setting userspace CPU state" + + * 8eeba194a32e0f50329354a696baaa2e3d9accc5 8eeba194a32e "KVM: s390: + Simplify SIGP Set Arch handling" + + [Test Case] + + * Install an LPAR on IBM Z (z13+) or LinuxONE (Emperor / Rockhopper) + with Ubuntu Server 20.04 using kernel standard kernel 5.4. + + * Setup this LPAR as QEMU/KVM host and a focal VM as guest. + + * The test itself is the following unit test: + https://lore.kernel.org/r/20220303210425.1693486-1-far...@linux.ibm.com/ + + * The test and verification will be done by the IBM Z team. + + [Where problems could occur] + + + + * A broken patch could harm KVM ioctl on s390x or the (virtual) CPU + state control in general. + + * The SIGP handing (on s390x) can become broken, which could lead to + incorrect (virtual) CPU states. + + * In worst case KVM can become broken on s390x entirely. + + * The modified code is all s390x specific QEMU/KVM code, + no common code is touched. + + [Other] + + * The two remaining patches are upstream since 5.16, + the first one already landed in 5.4 via upstream stable bug LP#1959701 + and in 5.13 via upstream stable bug LP#1960861. + + * The patches already landed in jammy (master-next) based on LP#1959735, + hence only SRU to impish and focal is needed. + + * This patches got discussed here: + https://lore.kernel.org/all/20211008203112.1979843-2-far...@linux.ibm.com/ + + * This not only fixes the SIGP processing, but is also important in terms of + long term maintainability. + + __ + + Description: + KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. + + The patches to fix this have already been picked for jammy/master-next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" - For Ubuntu 20.04 the focal/master-next already contains: + For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART - so we additionally need the following two upstream commits in focal + so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling ** Changed in: linux (Ubuntu Focal) Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: linux (Ubuntu Impish) Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: In Progress Status in linux source package in Impish: In Progress Bug description: SRU Justification: == [Impact] * The SIGP processing on KVM/s390x is incorrect and not fully conformant to the 'Principles of Operations', the IBM Z
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
Many thx, Eric! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: New Status in linux package in Ubuntu: In Progress Status in linux source package in Focal: New Status in linux source package in Impish: New Bug description: Decription: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
Kernel test builds: linux - 5.13.0-32.35~lp1962578 linux - 5.4.0-102.115~lp1962578 that incl. the commits mentioned above are available here: https://launchpad.net/~fheimes/+archive/ubuntu/lp1962578 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: New Status in linux package in Ubuntu: In Progress Status in linux source package in Focal: New Status in linux source package in Impish: New Bug description: Decription: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1962578] Re: [UBUNTU 20.04] Fix SIGP processing on KVM/s390
** Summary changed: - [UBUNTU 20.04] Fix SIGP processing (KVM: s390) + [UBUNTU 20.04] Fix SIGP processing on KVM/s390 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1962578 Title: [UBUNTU 20.04] Fix SIGP processing on KVM/s390 Status in Ubuntu on IBM z Systems: New Status in linux package in Ubuntu: In Progress Status in linux source package in Focal: New Status in linux source package in Impish: New Bug description: Decription: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
