1. 25 Oct, 2022 2 commits
    • Rafael J. Wysocki's avatar
      cpufreq: intel_pstate: hybrid: Use known scaling factor for P-cores · f5c8cf2a
      Rafael J. Wysocki authored
      Commit 46573fd6 ("cpufreq: intel_pstate: hybrid: Rework HWP
      calibration") attempted to use the information from CPPC (the nominal
      performance in particular) to obtain the scaling factor allowing the
      frequency to be computed if the HWP performance level of the given CPU
      is known or vice versa.
      
      However, it turns out that on some platforms this doesn't work, because
      the CPPC information on them does not align with the contents of the
      MSR_HWP_CAPABILITIES registers.
      
      This basically means that the only way to make intel_pstate work on all
      of the hybrid platforms to date is to use the observation that on all
      of them the scaling factor between the HWP performance levels and
      frequency for P-cores is 78741 (approximately 100000/1.27).  For
      E-cores it is 100000, which is the same as for all of the non-hybrid
      "core" platforms and does not require any changes.
      
      Accordingly, make intel_pstate use 78741 as the scaling factor between
      HWP performance levels and frequency for P-cores on all hybrid platforms
      and drop the dependency of the HWP calibration code on CPPC.
      
      Fixes: 46573fd6 ("cpufreq: intel_pstate: hybrid: Rework HWP calibration")
      Reported-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
      Acked-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
      Tested-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
      Cc: 5.15+ <stable@vger.kernel.org> # 5.15+
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      f5c8cf2a
    • Rafael J. Wysocki's avatar
      cpufreq: intel_pstate: Read all MSRs on the target CPU · 8dbab94d
      Rafael J. Wysocki authored
      Some of the MSR accesses in intel_pstate are carried out on the CPU
      that is running the code, but the values coming from them are used
      for the performance scaling of the other CPUs.
      
      This is problematic, for example, on hybrid platforms where
      MSR_TURBO_RATIO_LIMIT for P-cores and E-cores is different, so the
      values read from it on a P-core are generally not applicable to E-cores
      and the other way around.
      
      For this reason, make the driver access all MSRs on the target CPU on
      platforms using the "core" pstate_funcs callbacks which is the case for
      all of the hybrid platforms released to date.  For this purpose, pass
      a CPU argument to the ->get_max(), ->get_max_physical(), ->get_min()
      and ->get_turbo() pstate_funcs callbacks and from there pass it to
      rdmsrl_on_cpu() or rdmsrl_safe_on_cpu() to access the MSR on the target
      CPU.
      
      Fixes: 46573fd6 ("cpufreq: intel_pstate: hybrid: Rework HWP calibration")
      Acked-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
      Tested-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
      Cc: 5.15+ <stable@vger.kernel.org> # 5.15+
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      8dbab94d
  2. 23 Oct, 2022 9 commits
  3. 22 Oct, 2022 21 commits
  4. 21 Oct, 2022 8 commits
    • Linus Torvalds's avatar
      Merge tag '6.1-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 · bd8e9634
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
      
       - memory leak fixes
      
       - fixes for directory leases, including an important one which fixes a
         problem noticed by git functional tests
      
       - fixes relating to missing free_xid calls (helpful for
         tracing/debugging of entry/exit into cifs.ko)
      
       - a multichannel fix
      
       - a small cleanup fix (use of list_move instead of list_del/list_add)
      
      * tag '6.1-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: update internal module number
        cifs: fix memory leaks in session setup
        cifs: drop the lease for cached directories on rmdir or rename
        smb3: interface count displayed incorrectly
        cifs: Fix memory leak when build ntlmssp negotiate blob failed
        cifs: set rc to -ENOENT if we can not get a dentry for the cached dir
        cifs: use LIST_HEAD() and list_move() to simplify code
        cifs: Fix xid leak in cifs_get_file_info_unix()
        cifs: Fix xid leak in cifs_ses_add_channel()
        cifs: Fix xid leak in cifs_flock()
        cifs: Fix xid leak in cifs_copy_file_range()
        cifs: Fix xid leak in cifs_create()
      bd8e9634
    • Linus Torvalds's avatar
      Merge tag 'nfsd-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux · 022c028f
      Linus Torvalds authored
      Pull nfsd fixes from Chuck Lever:
       "Fixes for patches merged in v6.1"
      
      * tag 'nfsd-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
        nfsd: ensure we always call fh_verify_error tracepoint
        NFSD: unregister shrinker when nfsd_init_net() fails
      022c028f
    • Chang S. Bae's avatar
      x86/fpu: Fix copy_xstate_to_uabi() to copy init states correctly · 471f0aa7
      Chang S. Bae authored
      When an extended state component is not present in fpstate, but in init
      state, the function copies from init_fpstate via copy_feature().
      
      But, dynamic states are not present in init_fpstate because of all-zeros
      init states. Then retrieving them from init_fpstate will explode like this:
      
       BUG: kernel NULL pointer dereference, address: 0000000000000000
       ...
       RIP: 0010:memcpy_erms+0x6/0x10
        ? __copy_xstate_to_uabi_buf+0x381/0x870
        fpu_copy_guest_fpstate_to_uabi+0x28/0x80
        kvm_arch_vcpu_ioctl+0x14c/0x1460 [kvm]
        ? __this_cpu_preempt_check+0x13/0x20
        ? vmx_vcpu_put+0x2e/0x260 [kvm_intel]
        kvm_vcpu_ioctl+0xea/0x6b0 [kvm]
        ? kvm_vcpu_ioctl+0xea/0x6b0 [kvm]
        ? __fget_light+0xd4/0x130
        __x64_sys_ioctl+0xe3/0x910
        ? debug_smp_processor_id+0x17/0x20
        ? fpregs_assert_state_consistent+0x27/0x50
        do_syscall_64+0x3f/0x90
        entry_SYSCALL_64_after_hwframe+0x63/0xcd
      
      Adjust the 'mask' to zero out the userspace buffer for the features that
      are not available both from fpstate and from init_fpstate.
      
      The dynamic features depend on the compacted XSAVE format. Ensure it is
      enabled before reading XCOMP_BV in init_fpstate.
      
      Fixes: 2308ee57 ("x86/fpu/amx: Enable the AMX feature in 64-bit mode")
      Reported-by: default avatarYuan Yao <yuan.yao@intel.com>
      Suggested-by: default avatarDave Hansen <dave.hansen@intel.com>
      Signed-off-by: default avatarChang S. Bae <chang.seok.bae@intel.com>
      Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Tested-by: default avatarYuan Yao <yuan.yao@intel.com>
      Link: https://lore.kernel.org/lkml/BYAPR11MB3717EDEF2351C958F2C86EED95259@BYAPR11MB3717.namprd11.prod.outlook.com/
      Link: https://lkml.kernel.org/r/20221021185844.13472-1-chang.seok.bae@intel.com
      471f0aa7
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · ed537795
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Two small changes, one in the lpfc driver and the other in the core.
      
        The core change is an additional footgun guard which prevents users
        from writing the wrong state to sysfs and causing a hang"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: lpfc: Fix memory leak in lpfc_create_port()
        scsi: core: Restrict legal sdev_state transitions via sysfs
      ed537795
    • Linus Torvalds's avatar
      Merge tag 'block-6.1-2022-10-20' of git://git.kernel.dk/linux · d4b7332e
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request via Christoph:
            - fix nvme-hwmon for DMA non-cohehrent architectures (Serge Semin)
            - add a nvme-hwmong maintainer (Christoph Hellwig)
            - fix error pointer dereference in error handling (Dan Carpenter)
            - fix invalid memory reference in nvmet_subsys_attr_qid_max_show
              (Daniel Wagner)
            - don't limit the DMA segment size in nvme-apple (Russell King)
            - fix workqueue MEM_RECLAIM flushing dependency (Sagi Grimberg)
            - disable write zeroes on various Kingston SSDs (Xander Li)
      
       - fix a memory leak with block device tracing (Ye)
      
       - flexible-array fix for ublk (Yushan)
      
       - document the ublk recovery feature from this merge window
         (ZiyangZhang)
      
       - remove dead bfq variable in struct (Yuwei)
      
       - error handling rq clearing fix (Yu)
      
       - add an IRQ safety check for the cached bio freeing (Pavel)
      
       - drbd bio cloning fix (Christoph)
      
      * tag 'block-6.1-2022-10-20' of git://git.kernel.dk/linux:
        blktrace: remove unnessary stop block trace in 'blk_trace_shutdown'
        blktrace: fix possible memleak in '__blk_trace_remove'
        blktrace: introduce 'blk_trace_{start,stop}' helper
        bio: safeguard REQ_ALLOC_CACHE bio put
        block, bfq: remove unused variable for bfq_queue
        drbd: only clone bio if we have a backing device
        ublk_drv: use flexible-array member instead of zero-length array
        nvmet: fix invalid memory reference in nvmet_subsys_attr_qid_max_show
        nvmet: fix workqueue MEM_RECLAIM flushing dependency
        nvme-hwmon: kmalloc the NVME SMART log buffer
        nvme-hwmon: consistently ignore errors from nvme_hwmon_init
        nvme: add Guenther as nvme-hwmon maintainer
        nvme-apple: don't limit DMA segement size
        nvme-pci: disable write zeroes on various Kingston SSD
        nvme: fix error pointer dereference in error handling
        Documentation: document ublk user recovery feature
        blk-mq: fix null pointer dereference in blk_mq_clear_rq_mapping()
      d4b7332e
    • Linus Torvalds's avatar
      Merge tag 'io_uring-6.1-2022-10-20' of git://git.kernel.dk/linux · 294e73ff
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - Fix a potential memory leak in the error handling path of io-wq setup
         (Rafael)
      
       - Kill an errant debug statement that got added in this release (me)
      
       - Fix an oops with an invalid direct descriptor with IORING_OP_MSG_RING
         (Harshit)
      
       - Remove unneeded FFS_SCM flagging (Pavel)
      
       - Remove polling off the exit path (Pavel)
      
       - Move out direct descriptor debug check to the cleanup path (Pavel)
      
       - Use the proper helper rather than open-coding cached request get
         (Pavel)
      
      * tag 'io_uring-6.1-2022-10-20' of git://git.kernel.dk/linux:
        io-wq: Fix memory leak in worker creation
        io_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()
        io_uring/rw: remove leftover debug statement
        io_uring: don't iopoll from io_ring_ctx_wait_and_kill()
        io_uring: reuse io_alloc_req()
        io_uring: kill hot path fixed file bitmap debug checks
        io_uring: remove FFS_SCM
      294e73ff
    • Linus Torvalds's avatar
      Merge tag 'for-linus-6.1-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · 1d61754c
      Linus Torvalds authored
      Pull xen fixes from Juergen Gross:
       "Just two fixes for the new 'virtio with grants' feature"
      
      * tag 'for-linus-6.1-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        xen/virtio: Convert PAGE_SIZE/PAGE_SHIFT/PFN_UP to Xen counterparts
        xen/virtio: Handle cases when page offset > PAGE_SIZE properly
      1d61754c
    • Linus Torvalds's avatar
      Merge tag 'selinux-pr-20221020' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux · 0de0b768
      Linus Torvalds authored
      Pull selinux fix from Paul Moore:
       "A small SELinux fix for a GFP_KERNEL allocation while a spinlock is
        held.
      
        The patch, while still fairly small, is a bit larger than one might
        expect from a simple s/GFP_KERNEL/GFP_ATOMIC/ conversion because we
        added support for the function to be called with different gfp flags
        depending on the context, preserving GFP_KERNEL for those cases that
        can safely sleep"
      
      * tag 'selinux-pr-20221020' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
        selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()
      0de0b768