1. 25 Feb, 2022 22 commits
  2. 24 Feb, 2022 18 commits
    • Linus Torvalds's avatar
      Merge tag 'perf-tools-fixes-for-v5.17-2022-02-24' of... · 7ee02256
      Linus Torvalds authored
      Merge tag 'perf-tools-fixes-for-v5.17-2022-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
      
      Pull perf tools fixes from Arnaldo Carvalho de Melo:
      
       - Fix double free in in the error path when opening perf.data from
         multiple files in a directory instead of from a single file
      
       - Sync the msr-index.h copy with the kernel sources
      
       - Fix error when printing 'weight' field in 'perf script'
      
       - Skip failing sigtrap test for arm+aarch64 in 'perf test'
      
       - Fix failure to use a cpu list for uncore events in hybrid systems,
         e.g. Intel Alder Lake
      
      * tag 'perf-tools-fixes-for-v5.17-2022-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
        perf script: Fix error when printing 'weight' field
        tools arch x86: Sync the msr-index.h copy with the kernel sources
        perf data: Fix double free in perf_session__delete()
        perf evlist: Fix failed to use cpu list for uncore events
        perf test: Skip failing sigtrap test for arm+aarch64
      7ee02256
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 1f840c0e
      Linus Torvalds authored
      Pull kvm fixes from Paolo Bonzini:
       "x86 host:
      
         - Expose KVM_CAP_ENABLE_CAP since it is supported
      
         - Disable KVM_HC_CLOCK_PAIRING in TSC catchup mode
      
         - Ensure async page fault token is nonzero
      
         - Fix lockdep false negative
      
         - Fix FPU migration regression from the AMX changes
      
        x86 guest:
      
         - Don't use PV TLB/IPI/yield on uniprocessor guests
      
        PPC:
      
         - reserve capability id (topic branch for ppc/kvm)"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: x86: nSVM: disallow userspace setting of MSR_AMD64_TSC_RATIO to non default value when tsc scaling disabled
        KVM: x86/mmu: make apf token non-zero to fix bug
        KVM: PPC: reserve capability 210 for KVM_CAP_PPC_AIL_MODE_3
        x86/kvm: Don't use pv tlb/ipi/sched_yield if on 1 vCPU
        x86/kvm: Fix compilation warning in non-x86_64 builds
        x86/kvm/fpu: Remove kvm_vcpu_arch.guest_supported_xcr0
        x86/kvm/fpu: Limit guest user_xfeatures to supported bits of XCR0
        kvm: x86: Disable KVM_HC_CLOCK_PAIRING if tsc is in always catchup mode
        KVM: Fix lockdep false negative during host resume
        KVM: x86: Add KVM_CAP_ENABLE_CAP to x86
      1f840c0e
    • Linus Torvalds's avatar
      Merge tag 'pci-v5.17-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · d8152cfe
      Linus Torvalds authored
      Pull pci fixes from Bjorn Helgaas:
      
       - Fix a merge error that broke PCI device enumeration on mvebu
         platforms, including Turris Omnia (Armada 385) (Pali Rohár)
      
       - Avoid using ATS on all AMD Navi10 and Navi14 GPUs because some
         VBIOSes don't account for "harvested" (disabled) parts of the chip
         when initializing caches (Alex Deucher)
      
      * tag 'pci-v5.17-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        PCI: Mark all AMD Navi10 and Navi14 GPU ATS as broken
        PCI: mvebu: Fix device enumeration regression
      d8152cfe
    • Linus Torvalds's avatar
      Merge tag 'net-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · f672ff91
      Linus Torvalds authored
      Pull networking fixes from Jakub Kicinski:
       "Including fixes from bpf and netfilter.
      
        Current release - regressions:
      
         - bpf: fix crash due to out of bounds access into reg2btf_ids
      
         - mvpp2: always set port pcs ops, avoid null-deref
      
         - eth: marvell: fix driver load from initrd
      
         - eth: intel: revert "Fix reset bw limit when DCB enabled with 1 TC"
      
        Current release - new code bugs:
      
         - mptcp: fix race in overlapping signal events
      
        Previous releases - regressions:
      
         - xen-netback: revert hotplug-status changes causing devices to not
           be configured
      
         - dsa:
            - avoid call to __dev_set_promiscuity() while rtnl_mutex isn't
              held
            - fix panic when removing unoffloaded port from bridge
      
         - dsa: microchip: fix bridging with more than two member ports
      
        Previous releases - always broken:
      
         - bpf:
            - fix crash due to incorrect copy_map_value when both spin lock
              and timer are present in a single value
            - fix a bpf_timer initialization issue with clang
            - do not try bpf_msg_push_data with len 0
            - add schedule points in batch ops
      
         - nf_tables:
            - unregister flowtable hooks on netns exit
            - correct flow offload action array size
            - fix a couple of memory leaks
      
         - vsock: don't check owner in vhost_vsock_stop() while releasing
      
         - gso: do not skip outer ip header in case of ipip and net_failover
      
         - smc: use a mutex for locking "struct smc_pnettable"
      
         - openvswitch: fix setting ipv6 fields causing hw csum failure
      
         - mptcp: fix race in incoming ADD_ADDR option processing
      
         - sysfs: add check for netdevice being present to speed_show
      
         - sched: act_ct: fix flow table lookup after ct clear or switching
           zones
      
         - eth: intel: fixes for SR-IOV forwarding offloads
      
         - eth: broadcom: fixes for selftests and error recovery
      
         - eth: mellanox: flow steering and SR-IOV forwarding fixes
      
        Misc:
      
         - make __pskb_pull_tail() & pskb_carve_frag_list() drop_monitor
           friends not report freed skbs as drops
      
         - force inlining of checksum functions in net/checksum.h"
      
      * tag 'net-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits)
        net: mv643xx_eth: process retval from of_get_mac_address
        ping: remove pr_err from ping_lookup
        Revert "i40e: Fix reset bw limit when DCB enabled with 1 TC"
        openvswitch: Fix setting ipv6 fields causing hw csum failure
        ipv6: prevent a possible race condition with lifetimes
        net/smc: Use a mutex for locking "struct smc_pnettable"
        bnx2x: fix driver load from initrd
        Revert "xen-netback: Check for hotplug-status existence before watching"
        Revert "xen-netback: remove 'hotplug-status' once it has served its purpose"
        net/mlx5e: Fix VF min/max rate parameters interchange mistake
        net/mlx5e: Add missing increment of count
        net/mlx5e: MPLSoUDP decap, fix check for unsupported matches
        net/mlx5e: Fix MPLSoUDP encap to use MPLS action information
        net/mlx5e: Add feature check for set fec counters
        net/mlx5e: TC, Skip redundant ct clear actions
        net/mlx5e: TC, Reject rules with forward and drop actions
        net/mlx5e: TC, Reject rules with drop and modify hdr action
        net/mlx5e: kTLS, Use CHECKSUM_UNNECESSARY for device-offloaded packets
        net/mlx5e: Fix wrong return value on ioctl EEPROM query failure
        net/mlx5: Fix possible deadlock on rule deletion
        ...
      f672ff91
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2022-02-24' of... · ecf8a99f
      Dave Airlie authored
      Merge tag 'drm-intel-fixes-2022-02-24' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
      
      - Fix QGV handling on ADL-P+ (Ville Syrjälä)
      - Fix bw atomic check when switching between SAGV vs. no SAGV (Ville Syrjälä)
      - Disconnect PHYs left connected by BIOS on disabled ports (Imre Deak)
      - Fix SAVG to no SAGV transitions on TGL+ (Ville Syrjälä)
      - Print PHY name properly on calibration error (DG2) (Matt Roper)
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/YhdyHwRWkOTWwlqi@tursulin-mobl2
      ecf8a99f
    • Linus Torvalds's avatar
      Merge tag 'block-5.17-2022-02-24' of git://git.kernel.dk/linux-block · 73878e5e
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request:
          - send H2CData PDUs based on MAXH2CDATA (Varun Prakash)
          - fix passthrough to namespaces with unsupported features (Christoph
            Hellwig)
      
       - Clear iocb->private at poll completion (Stefano)
      
      * tag 'block-5.17-2022-02-24' of git://git.kernel.dk/linux-block:
        nvme-tcp: send H2CData PDUs based on MAXH2CDATA
        nvme: also mark passthrough-only namespaces ready in nvme_update_ns_info
        nvme: don't return an error from nvme_configure_metadata
        block: clear iocb->private in blkdev_bio_end_io_async()
      73878e5e
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.17-2022-02-23' of git://git.kernel.dk/linux-block · 3a5f59b1
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - Add a conditional schedule point in io_add_buffers() (Eric)
      
       - Fix for a quiesce speedup merged in this release (Dylan)
      
       - Don't convert to jiffies for event timeout waiting, it's way too
         coarse when we accept a timespec as input (me)
      
      * tag 'io_uring-5.17-2022-02-23' of git://git.kernel.dk/linux-block:
        io_uring: disallow modification of rsrc_data during quiesce
        io_uring: don't convert to jiffies for waiting on timeouts
        io_uring: add a schedule point in io_add_buffers()
      3a5f59b1
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v5.17-4' of... · 6c528f34
      Linus Torvalds authored
      Merge tag 'platform-drivers-x86-v5.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
      
      Pull more x86 platform driver fixes from Hans de Goede:
       "Two more fixes:
      
         - Fix suspend/resume regression on AMD Cezanne APUs in >= 5.16
      
         - Fix Microsoft Surface 3 battery readings"
      
      * tag 'platform-drivers-x86-v5.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
        surface: surface3_power: Fix battery readings on batteries without a serial number
        platform/x86: amd-pmc: Set QOS during suspend on CZN w/ timer wakeup
      6c528f34
    • Mauri Sandberg's avatar
      net: mv643xx_eth: process retval from of_get_mac_address · 42404d8f
      Mauri Sandberg authored
      Obtaining a MAC address may be deferred in cases when the MAC is stored
      in an NVMEM block, for example, and it may not be ready upon the first
      retrieval attempt and return EPROBE_DEFER.
      
      It is also possible that a port that does not rely on NVMEM has been
      already created when getting the defer request. Thus, also the resources
      allocated previously must be freed when doing a roll-back.
      
      Fixes: 76723bca ("net: mv643xx_eth: add DT parsing support")
      Signed-off-by: default avatarMauri Sandberg <maukka@ext.kapsi.fi>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Link: https://lore.kernel.org/r/20220223142337.41757-1-maukka@ext.kapsi.fiSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      42404d8f
    • Maxim Levitsky's avatar
      KVM: x86: nSVM: disallow userspace setting of MSR_AMD64_TSC_RATIO to non... · e910a53f
      Maxim Levitsky authored
      KVM: x86: nSVM: disallow userspace setting of MSR_AMD64_TSC_RATIO to non default value when tsc scaling disabled
      
      If nested tsc scaling is disabled, MSR_AMD64_TSC_RATIO should
      never have non default value.
      
      Due to way nested tsc scaling support was implmented in qemu,
      it would set this msr to 0 when nested tsc scaling was disabled.
      Ignore that value for now, as it causes no harm.
      
      Fixes: 5228eb96 ("KVM: x86: nSVM: implement nested TSC scaling")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
      Message-Id: <20220223115649.319134-1-mlevitsk@redhat.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      e910a53f
    • Liang Zhang's avatar
      KVM: x86/mmu: make apf token non-zero to fix bug · 6f3c1fc5
      Liang Zhang authored
      In current async pagefault logic, when a page is ready, KVM relies on
      kvm_arch_can_dequeue_async_page_present() to determine whether to deliver
      a READY event to the Guest. This function test token value of struct
      kvm_vcpu_pv_apf_data, which must be reset to zero by Guest kernel when a
      READY event is finished by Guest. If value is zero meaning that a READY
      event is done, so the KVM can deliver another.
      But the kvm_arch_setup_async_pf() may produce a valid token with zero
      value, which is confused with previous mention and may lead the loss of
      this READY event.
      
      This bug may cause task blocked forever in Guest:
       INFO: task stress:7532 blocked for more than 1254 seconds.
             Not tainted 5.10.0 #16
       "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
       task:stress          state:D stack:    0 pid: 7532 ppid:  1409
       flags:0x00000080
       Call Trace:
        __schedule+0x1e7/0x650
        schedule+0x46/0xb0
        kvm_async_pf_task_wait_schedule+0xad/0xe0
        ? exit_to_user_mode_prepare+0x60/0x70
        __kvm_handle_async_pf+0x4f/0xb0
        ? asm_exc_page_fault+0x8/0x30
        exc_page_fault+0x6f/0x110
        ? asm_exc_page_fault+0x8/0x30
        asm_exc_page_fault+0x1e/0x30
       RIP: 0033:0x402d00
       RSP: 002b:00007ffd31912500 EFLAGS: 00010206
       RAX: 0000000000071000 RBX: ffffffffffffffff RCX: 00000000021a32b0
       RDX: 000000000007d011 RSI: 000000000007d000 RDI: 00000000021262b0
       RBP: 00000000021262b0 R08: 0000000000000003 R09: 0000000000000086
       R10: 00000000000000eb R11: 00007fefbdf2baa0 R12: 0000000000000000
       R13: 0000000000000002 R14: 000000000007d000 R15: 0000000000001000
      Signed-off-by: default avatarLiang Zhang <zhangliang5@huawei.com>
      Message-Id: <20220222031239.1076682-1-zhangliang5@huawei.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      6f3c1fc5
    • Xin Long's avatar
      ping: remove pr_err from ping_lookup · cd33bdcb
      Xin Long authored
      As Jakub noticed, prints should be avoided on the datapath.
      Also, as packets would never come to the else branch in
      ping_lookup(), remove pr_err() from ping_lookup().
      
      Fixes: 35a79e64 ("ping: fix the dif and sdif check in ping_lookup")
      Reported-by: default avatarJakub Kicinski <kuba@kernel.org>
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Link: https://lore.kernel.org/r/1ef3f2fcd31bd681a193b1fcf235eee1603819bd.1645674068.git.lucien.xin@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      cd33bdcb
    • Mateusz Palczewski's avatar
      Revert "i40e: Fix reset bw limit when DCB enabled with 1 TC" · fe203715
      Mateusz Palczewski authored
      Revert of a patch that instead of fixing a AQ error when trying
      to reset BW limit introduced several regressions related to
      creation and managing TC. Currently there are errors when creating
      a TC on both PF and VF.
      
      Error log:
      [17428.783095] i40e 0000:3b:00.1: AQ command Config VSI BW allocation per TC failed = 14
      [17428.783107] i40e 0000:3b:00.1: Failed configuring TC map 0 for VSI 391
      [17428.783254] i40e 0000:3b:00.1: AQ command Config VSI BW allocation per TC failed = 14
      [17428.783259] i40e 0000:3b:00.1: Unable to  configure TC map 0 for VSI 391
      
      This reverts commit 3d250466.
      
      Fixes: 3d250466 (i40e: Fix reset bw limit when DCB enabled with 1 TC)
      Signed-off-by: default avatarMateusz Palczewski <mateusz.palczewski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      Link: https://lore.kernel.org/r/20220223175347.1690692-1-anthony.l.nguyen@intel.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      fe203715
    • Paul Blakey's avatar
      openvswitch: Fix setting ipv6 fields causing hw csum failure · d9b5ae5c
      Paul Blakey authored
      Ipv6 ttl, label and tos fields are modified without first
      pulling/pushing the ipv6 header, which would have updated
      the hw csum (if available). This might cause csum validation
      when sending the packet to the stack, as can be seen in
      the trace below.
      
      Fix this by updating skb->csum if available.
      
      Trace resulted by ipv6 ttl dec and then sending packet
      to conntrack [actions: set(ipv6(hlimit=63)),ct(zone=99)]:
      [295241.900063] s_pf0vf2: hw csum failure
      [295241.923191] Call Trace:
      [295241.925728]  <IRQ>
      [295241.927836]  dump_stack+0x5c/0x80
      [295241.931240]  __skb_checksum_complete+0xac/0xc0
      [295241.935778]  nf_conntrack_tcp_packet+0x398/0xba0 [nf_conntrack]
      [295241.953030]  nf_conntrack_in+0x498/0x5e0 [nf_conntrack]
      [295241.958344]  __ovs_ct_lookup+0xac/0x860 [openvswitch]
      [295241.968532]  ovs_ct_execute+0x4a7/0x7c0 [openvswitch]
      [295241.979167]  do_execute_actions+0x54a/0xaa0 [openvswitch]
      [295242.001482]  ovs_execute_actions+0x48/0x100 [openvswitch]
      [295242.006966]  ovs_dp_process_packet+0x96/0x1d0 [openvswitch]
      [295242.012626]  ovs_vport_receive+0x6c/0xc0 [openvswitch]
      [295242.028763]  netdev_frame_hook+0xc0/0x180 [openvswitch]
      [295242.034074]  __netif_receive_skb_core+0x2ca/0xcb0
      [295242.047498]  netif_receive_skb_internal+0x3e/0xc0
      [295242.052291]  napi_gro_receive+0xba/0xe0
      [295242.056231]  mlx5e_handle_rx_cqe_mpwrq_rep+0x12b/0x250 [mlx5_core]
      [295242.062513]  mlx5e_poll_rx_cq+0xa0f/0xa30 [mlx5_core]
      [295242.067669]  mlx5e_napi_poll+0xe1/0x6b0 [mlx5_core]
      [295242.077958]  net_rx_action+0x149/0x3b0
      [295242.086762]  __do_softirq+0xd7/0x2d6
      [295242.090427]  irq_exit+0xf7/0x100
      [295242.093748]  do_IRQ+0x7f/0xd0
      [295242.096806]  common_interrupt+0xf/0xf
      [295242.100559]  </IRQ>
      [295242.102750] RIP: 0033:0x7f9022e88cbd
      [295242.125246] RSP: 002b:00007f9022282b20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffda
      [295242.132900] RAX: 0000000000000005 RBX: 0000000000000010 RCX: 0000000000000000
      [295242.140120] RDX: 00007f9022282ba8 RSI: 00007f9022282a30 RDI: 00007f9014005c30
      [295242.147337] RBP: 00007f9014014d60 R08: 0000000000000020 R09: 00007f90254a8340
      [295242.154557] R10: 00007f9022282a28 R11: 0000000000000246 R12: 0000000000000000
      [295242.161775] R13: 00007f902308c000 R14: 000000000000002b R15: 00007f9022b71f40
      
      Fixes: 3fdbd1ce ("openvswitch: add ipv6 'set' action")
      Signed-off-by: default avatarPaul Blakey <paulb@nvidia.com>
      Link: https://lore.kernel.org/r/20220223163416.24096-1-paulb@nvidia.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      d9b5ae5c
    • Niels Dossche's avatar
      ipv6: prevent a possible race condition with lifetimes · 6c0d8833
      Niels Dossche authored
      valid_lft, prefered_lft and tstamp are always accessed under the lock
      "lock" in other places. Reading these without taking the lock may result
      in inconsistencies regarding the calculation of the valid and preferred
      variables since decisions are taken on these fields for those variables.
      Signed-off-by: default avatarNiels Dossche <dossche.niels@gmail.com>
      Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
      Signed-off-by: default avatarNiels Dossche <niels.dossche@ugent.be>
      Link: https://lore.kernel.org/r/20220223131954.6570-1-niels.dossche@ugent.beSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      6c0d8833
    • Fabio M. De Francesco's avatar
      net/smc: Use a mutex for locking "struct smc_pnettable" · 7ff57e98
      Fabio M. De Francesco authored
      smc_pnetid_by_table_ib() uses read_lock() and then it calls smc_pnet_apply_ib()
      which, in turn, calls mutex_lock(&smc_ib_devices.mutex).
      
      read_lock() disables preemption. Therefore, the code acquires a mutex while in
      atomic context and it leads to a SAC bug.
      
      Fix this bug by replacing the rwlock with a mutex.
      
      Reported-and-tested-by: syzbot+4f322a6d84e991c38775@syzkaller.appspotmail.com
      Fixes: 64e28b52 ("net/smc: add pnet table namespace support")
      Confirmed-by: default avatarTony Lu <tonylu@linux.alibaba.com>
      Signed-off-by: default avatarFabio M. De Francesco <fmdefrancesco@gmail.com>
      Acked-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
      Link: https://lore.kernel.org/r/20220223100252.22562-1-fmdefrancesco@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      7ff57e98
    • Manish Chopra's avatar
      bnx2x: fix driver load from initrd · e13ad144
      Manish Chopra authored
      Commit b7a49f73 ("bnx2x: Utilize firmware 7.13.21.0") added
      new firmware support in the driver with maintaining older firmware
      compatibility. However, older firmware was not added in MODULE_FIRMWARE()
      which caused missing firmware files in initrd image leading to driver load
      failure from initrd. This patch adds MODULE_FIRMWARE() for older firmware
      version to have firmware files included in initrd.
      
      Fixes: b7a49f73 ("bnx2x: Utilize firmware 7.13.21.0")
      Link: https://bugzilla.kernel.org/show_bug.cgi?id=215627Signed-off-by: default avatarManish Chopra <manishc@marvell.com>
      Signed-off-by: default avatarAlok Prasad <palok@marvell.com>
      Signed-off-by: default avatarAriel Elior <aelior@marvell.com>
      Link: https://lore.kernel.org/r/20220223085720.12021-1-manishc@marvell.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      e13ad144
    • Marek Marczykowski-Górecki's avatar
      Revert "xen-netback: Check for hotplug-status existence before watching" · e8240add
      Marek Marczykowski-Górecki authored
      This reverts commit 2afeec08.
      
      The reasoning in the commit was wrong - the code expected to setup the
      watch even if 'hotplug-status' didn't exist. In fact, it relied on the
      watch being fired the first time - to check if maybe 'hotplug-status' is
      already set to 'connected'. Not registering a watch for non-existing
      path (which is the case if hotplug script hasn't been executed yet),
      made the backend not waiting for the hotplug script to execute. This in
      turns, made the netfront think the interface is fully operational, while
      in fact it was not (the vif interface on xen-netback side might not be
      configured yet).
      
      This was a workaround for 'hotplug-status' erroneously being removed.
      But since that is reverted now, the workaround is not necessary either.
      
      More discussion at
      https://lore.kernel.org/xen-devel/afedd7cb-a291-e773-8b0d-4db9b291fa98@ipxe.org/T/#uSigned-off-by: default avatarMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
      Reviewed-by: default avatarPaul Durrant <paul@xen.org>
      Reviewed-by: default avatarMichael Brown <mbrown@fensystems.co.uk>
      Link: https://lore.kernel.org/r/20220222001817.2264967-2-marmarek@invisiblethingslab.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      e8240add