| Age | Commit message (Collapse) | Author |
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Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or any
later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190524100844.067492367@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Based on 1 normalized pattern(s):
is available under the gpl v2 or later
this program is free software you can redistribute it and or modify it
under the terms of the gnu general public license as published by the
free software foundation either version 2 of the license or at your
option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190524100843.876362585@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit 9012d011660ea5cf2 ("compiler: allow all arches to enable
CONFIG_OPTIMIZE_INLINING"), xtensa:tinyconfig fails to build with section
mismatch errors.
WARNING: vmlinux.o(.text.unlikely+0x68): Section mismatch in reference
from the function ___pa()
to the function .meminit.text:memblock_reserve()
WARNING: vmlinux.o(.text.unlikely+0x74): Section mismatch in reference
from the function mem_reserve()
to the function .meminit.text:memblock_reserve()
FATAL: modpost: Section mismatches detected.
This was not seen prior to the above mentioned commit because mem_reserve()
was always inlined.
Mark mem_reserve(() as __init_memblock to have it reside in the same
section as memblock_reserve().
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-Id: <1559220098-9955-1-git-send-email-linux@roeck-us.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Commit 9ed0985332a6 ("x86: intel_epb: Take CONFIG_PM into account")
prevented the majority of the Performance and Energy Bias Hint (EPB)
handling code from being built when CONFIG_PM is unset to fix a
regression introduced by commit b9c273babce7 ("PM / arch: x86:
MSR_IA32_ENERGY_PERF_BIAS sysfs interface").
In hindsight, however, it would be better to skip all of the EPB
handling code for CONFIG_PM unset as there really is no reason for
it to be there in that case. Namely, if the EPB is not touched
by the kernel at all with CONFIG_PM unset, there is no need to
worry about modifying the EPB inadvertently on CPU online and since
the system will not suspend or hibernate then, there is no need to
worry about possible modifications of the EPB by the platform
firmware during system-wide PM transitions.
For this reason, revert the changes made by commit 9ed0985332a6
and only allow intel_epb.o to be built when CONFIG_PM is set.
Note that this changes the behavior of the kernels built with
CONFIG_PM unset as they will not modify the EPB on boot if it is
zero initially any more, so it is not a fix strictly speaking, but
users building their kernels with CONFIG_PM unset really should not
expect them to take energy efficiency into account. Moreover, if
CONFIG_PM is unset for performance reasons, leaving EPB as set
initially by the platform firmware will actually be consistent
with the user's expectations.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
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There is no CLKSEL for timer12 on dra7 unlike for timer1. This
causes issues on booting the device that Tomi noticed if
DEBUG_SLAB is enabled and the clkctrl clock does not properly
handle non-existing clock. Let's drop the bogus CLKSEL clock,
the clkctrl clock handling gets fixed separately.
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Fixes: 4ed0dfe3cf39 ("ARM: dts: dra7: Move l4 child devices to probe them with ti-sysc")
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The sprgs are a set of 4 general purpose sprs provided for software use.
SPRG3 is special in that it can also be read from userspace. Thus it is
used on linux to store the cpu and numa id of the process to speed up
syscall access to this information.
This register is overwritten with the guest value on kvm guest entry,
and so needs to be restored on exit again. Thus restore the value on
the guest exit path in kvmhv_p9_guest_entry().
Cc: stable@vger.kernel.org # v4.20+
Fixes: 95a6432ce9038 ("KVM: PPC: Book3S HV: Streamlined guest entry/exit path on P9 for radix guests")
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Commit 3309bec85e60 ("KVM: PPC: Book3S HV: Fix lockdep warning when
entering the guest") moved calls to trace_hardirqs_{on,off} in the
entry path used for HPT guests. Similar code exists in the new
streamlined entry path used for radix guests on POWER9. This makes
the same change there, so as to avoid lockdep warnings such as this:
[ 228.686461] DEBUG_LOCKS_WARN_ON(current->hardirqs_enabled)
[ 228.686480] WARNING: CPU: 116 PID: 3803 at ../kernel/locking/lockdep.c:4219 check_flags.part.23+0x21c/0x270
[ 228.686544] Modules linked in: vhost_net vhost xt_CHECKSUM iptable_mangle xt_MASQUERADE iptable_nat nf_nat
+xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 tun bridge stp llc ebtable_filter
+ebtables ip6table_filter ip6_tables iptable_filter fuse kvm_hv kvm at24 ipmi_powernv regmap_i2c ipmi_devintf
+uio_pdrv_genirq ofpart ipmi_msghandler uio powernv_flash mtd ibmpowernv opal_prd ip_tables ext4 mbcache jbd2 btrfs
+zstd_decompress zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx libcrc32c xor
+raid6_pq raid1 raid0 ses sd_mod enclosure scsi_transport_sas ast i2c_opal i2c_algo_bit drm_kms_helper syscopyarea
+sysfillrect sysimgblt fb_sys_fops ttm drm i40e e1000e cxl aacraid tg3 drm_panel_orientation_quirks i2c_core
[ 228.686859] CPU: 116 PID: 3803 Comm: qemu-system-ppc Kdump: loaded Not tainted 5.2.0-rc1-xive+ #42
[ 228.686911] NIP: c0000000001b394c LR: c0000000001b3948 CTR: c000000000bfad20
[ 228.686963] REGS: c000200cdb50f570 TRAP: 0700 Not tainted (5.2.0-rc1-xive+)
[ 228.687001] MSR: 9000000002823033 <SF,HV,VEC,VSX,FP,ME,IR,DR,RI,LE> CR: 48222222 XER: 20040000
[ 228.687060] CFAR: c000000000116db0 IRQMASK: 1
[ 228.687060] GPR00: c0000000001b3948 c000200cdb50f800 c0000000015e7600 000000000000002e
[ 228.687060] GPR04: 0000000000000001 c0000000001c71a0 000000006e655f73 72727563284e4f5f
[ 228.687060] GPR08: 0000200e60680000 0000000000000000 c000200cdb486180 0000000000000000
[ 228.687060] GPR12: 0000000000002000 c000200fff61a680 0000000000000000 00007fffb75c0000
[ 228.687060] GPR16: 0000000000000000 0000000000000000 c0000000017d6900 c000000001124900
[ 228.687060] GPR20: 0000000000000074 c008000006916f68 0000000000000074 0000000000000074
[ 228.687060] GPR24: ffffffffffffffff ffffffffffffffff 0000000000000003 c000200d4b600000
[ 228.687060] GPR28: c000000001627e58 c000000001489908 c000000001627e58 c000000002304de0
[ 228.687377] NIP [c0000000001b394c] check_flags.part.23+0x21c/0x270
[ 228.687415] LR [c0000000001b3948] check_flags.part.23+0x218/0x270
[ 228.687466] Call Trace:
[ 228.687488] [c000200cdb50f800] [c0000000001b3948] check_flags.part.23+0x218/0x270 (unreliable)
[ 228.687542] [c000200cdb50f870] [c0000000001b6548] lock_is_held_type+0x188/0x1c0
[ 228.687595] [c000200cdb50f8d0] [c0000000001d939c] rcu_read_lock_sched_held+0xdc/0x100
[ 228.687646] [c000200cdb50f900] [c0000000001dd704] rcu_note_context_switch+0x304/0x340
[ 228.687701] [c000200cdb50f940] [c0080000068fcc58] kvmhv_run_single_vcpu+0xdb0/0x1120 [kvm_hv]
[ 228.687756] [c000200cdb50fa20] [c0080000068fd5b0] kvmppc_vcpu_run_hv+0x5e8/0xe40 [kvm_hv]
[ 228.687816] [c000200cdb50faf0] [c0080000071797dc] kvmppc_vcpu_run+0x34/0x48 [kvm]
[ 228.687863] [c000200cdb50fb10] [c0080000071755dc] kvm_arch_vcpu_ioctl_run+0x244/0x420 [kvm]
[ 228.687916] [c000200cdb50fba0] [c008000007165ccc] kvm_vcpu_ioctl+0x424/0x838 [kvm]
[ 228.687957] [c000200cdb50fd10] [c000000000433a24] do_vfs_ioctl+0xd4/0xcd0
[ 228.687995] [c000200cdb50fdb0] [c000000000434724] ksys_ioctl+0x104/0x120
[ 228.688033] [c000200cdb50fe00] [c000000000434768] sys_ioctl+0x28/0x80
[ 228.688072] [c000200cdb50fe20] [c00000000000b888] system_call+0x5c/0x70
[ 228.688109] Instruction dump:
[ 228.688142] 4bf6342d 60000000 0fe00000 e8010080 7c0803a6 4bfffe60 3c82ff87 3c62ff87
[ 228.688196] 388472d0 3863d738 4bf63405 60000000 <0fe00000> 4bffff4c 3c82ff87 3c62ff87
[ 228.688251] irq event stamp: 205
[ 228.688287] hardirqs last enabled at (205): [<c0080000068fc1b4>] kvmhv_run_single_vcpu+0x30c/0x1120 [kvm_hv]
[ 228.688344] hardirqs last disabled at (204): [<c0080000068fbff0>] kvmhv_run_single_vcpu+0x148/0x1120 [kvm_hv]
[ 228.688412] softirqs last enabled at (180): [<c000000000c0b2ac>] __do_softirq+0x4ac/0x5d4
[ 228.688464] softirqs last disabled at (169): [<c000000000122aa8>] irq_exit+0x1f8/0x210
[ 228.688513] ---[ end trace eb16f6260022a812 ]---
[ 228.688548] possible reason: unannotated irqs-off.
[ 228.688571] irq event stamp: 205
[ 228.688607] hardirqs last enabled at (205): [<c0080000068fc1b4>] kvmhv_run_single_vcpu+0x30c/0x1120 [kvm_hv]
[ 228.688664] hardirqs last disabled at (204): [<c0080000068fbff0>] kvmhv_run_single_vcpu+0x148/0x1120 [kvm_hv]
[ 228.688719] softirqs last enabled at (180): [<c000000000c0b2ac>] __do_softirq+0x4ac/0x5d4
[ 228.688758] softirqs last disabled at (169): [<c000000000122aa8>] irq_exit+0x1f8/0x210
Cc: stable@vger.kernel.org # v4.20+
Fixes: 95a6432ce903 ("KVM: PPC: Book3S HV: Streamlined guest entry/exit path on P9 for radix guests")
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Under XIVE, the ESB pages of an interrupt are used for interrupt
management (EOI) and triggering. They are made available to guests
through a mapping of the XIVE KVM device.
When a device is passed-through, the passthru_irq helpers,
kvmppc_xive_set_mapped() and kvmppc_xive_clr_mapped(), clear the ESB
pages of the guest IRQ number being mapped and let the VM fault
handler repopulate with the correct page.
The ESB pages are mapped at offset 4 (KVM_XIVE_ESB_PAGE_OFFSET) in the
KVM device mapping. Unfortunately, this offset was not taken into
account when clearing the pages. This lead to issues with the
passthrough devices for which the interrupts were not functional under
some guest configuration (tg3 and single CPU) or in any configuration
(e1000e adapter).
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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According to Documentation/virtual/kvm/locking.txt, the srcu read lock
should be taken when accessing the memslots of the VM. The XIVE KVM
device needs to do so when configuring the page of the OS event queue
of vCPU for a given priority and when marking the same page dirty
before migration.
This avoids warnings such as :
[ 208.224882] =============================
[ 208.224884] WARNING: suspicious RCU usage
[ 208.224889] 5.2.0-rc2-xive+ #47 Not tainted
[ 208.224890] -----------------------------
[ 208.224894] ../include/linux/kvm_host.h:633 suspicious rcu_dereference_check() usage!
[ 208.224896]
other info that might help us debug this:
[ 208.224898]
rcu_scheduler_active = 2, debug_locks = 1
[ 208.224901] no locks held by qemu-system-ppc/3923.
[ 208.224902]
stack backtrace:
[ 208.224907] CPU: 64 PID: 3923 Comm: qemu-system-ppc Kdump: loaded Not tainted 5.2.0-rc2-xive+ #47
[ 208.224909] Call Trace:
[ 208.224918] [c000200cdd98fa30] [c000000000be1934] dump_stack+0xe8/0x164 (unreliable)
[ 208.224924] [c000200cdd98fa80] [c0000000001aec80] lockdep_rcu_suspicious+0x110/0x180
[ 208.224935] [c000200cdd98fb00] [c0080000075933a0] gfn_to_memslot+0x1c8/0x200 [kvm]
[ 208.224943] [c000200cdd98fb40] [c008000007599600] gfn_to_pfn+0x28/0x60 [kvm]
[ 208.224951] [c000200cdd98fb70] [c008000007599658] gfn_to_page+0x20/0x40 [kvm]
[ 208.224959] [c000200cdd98fb90] [c0080000075b495c] kvmppc_xive_native_set_attr+0x8b4/0x1480 [kvm]
[ 208.224967] [c000200cdd98fca0] [c00800000759261c] kvm_device_ioctl_attr+0x64/0xb0 [kvm]
[ 208.224974] [c000200cdd98fcf0] [c008000007592730] kvm_device_ioctl+0xc8/0x110 [kvm]
[ 208.224979] [c000200cdd98fd10] [c000000000433a24] do_vfs_ioctl+0xd4/0xcd0
[ 208.224981] [c000200cdd98fdb0] [c000000000434724] ksys_ioctl+0x104/0x120
[ 208.224984] [c000200cdd98fe00] [c000000000434768] sys_ioctl+0x28/0x80
[ 208.224988] [c000200cdd98fe20] [c00000000000b888] system_call+0x5c/0x70
legoater@boss01:~$
Fixes: 13ce3297c576 ("KVM: PPC: Book3S HV: XIVE: Add controls for the EQ configuration")
Fixes: e6714bd1671d ("KVM: PPC: Book3S HV: XIVE: Add a control to dirty the XIVE EQ pages")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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The passthrough interrupts are defined at the host level and their IRQ
data should not be cleared unless specifically deconfigured (shutdown)
by the host. They differ from the IPI interrupts which are allocated
by the XIVE KVM device and reserved to the guest usage only.
This fixes a host crash when destroying a VM in which a PCI adapter
was passed-through. In this case, the interrupt is cleared and freed
by the KVM device and then shutdown by vfio at the host level.
[ 1007.360265] BUG: Kernel NULL pointer dereference at 0x00000d00
[ 1007.360285] Faulting instruction address: 0xc00000000009da34
[ 1007.360296] Oops: Kernel access of bad area, sig: 7 [#1]
[ 1007.360303] LE PAGE_SIZE=64K MMU=Radix MMU=Hash SMP NR_CPUS=2048 NUMA PowerNV
[ 1007.360314] Modules linked in: vhost_net vhost iptable_mangle ipt_MASQUERADE iptable_nat nf_nat xt_conntrack nf_conntrack nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 tun bridge stp llc kvm_hv kvm xt_tcpudp iptable_filter squashfs fuse binfmt_misc vmx_crypto ib_iser rdma_cm iw_cm ib_cm libiscsi scsi_transport_iscsi nfsd ip_tables x_tables autofs4 btrfs zstd_decompress zstd_compress lzo_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq multipath mlx5_ib ib_uverbs ib_core crc32c_vpmsum mlx5_core
[ 1007.360425] CPU: 9 PID: 15576 Comm: CPU 18/KVM Kdump: loaded Not tainted 5.1.0-gad7e7d0ef #4
[ 1007.360454] NIP: c00000000009da34 LR: c00000000009e50c CTR: c00000000009e5d0
[ 1007.360482] REGS: c000007f24ccf330 TRAP: 0300 Not tainted (5.1.0-gad7e7d0ef)
[ 1007.360500] MSR: 900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 24002484 XER: 00000000
[ 1007.360532] CFAR: c00000000009da10 DAR: 0000000000000d00 DSISR: 00080000 IRQMASK: 1
[ 1007.360532] GPR00: c00000000009e62c c000007f24ccf5c0 c000000001510600 c000007fe7f947c0
[ 1007.360532] GPR04: 0000000000000d00 0000000000000000 0000000000000000 c000005eff02d200
[ 1007.360532] GPR08: 0000000000400000 0000000000000000 0000000000000000 fffffffffffffffd
[ 1007.360532] GPR12: c00000000009e5d0 c000007fffff7b00 0000000000000031 000000012c345718
[ 1007.360532] GPR16: 0000000000000000 0000000000000008 0000000000418004 0000000000040100
[ 1007.360532] GPR20: 0000000000000000 0000000008430000 00000000003c0000 0000000000000027
[ 1007.360532] GPR24: 00000000000000ff 0000000000000000 00000000000000ff c000007faa90d98c
[ 1007.360532] GPR28: c000007faa90da40 00000000000fe040 ffffffffffffffff c000007fe7f947c0
[ 1007.360689] NIP [c00000000009da34] xive_esb_read+0x34/0x120
[ 1007.360706] LR [c00000000009e50c] xive_do_source_set_mask.part.0+0x2c/0x50
[ 1007.360732] Call Trace:
[ 1007.360738] [c000007f24ccf5c0] [c000000000a6383c] snooze_loop+0x15c/0x270 (unreliable)
[ 1007.360775] [c000007f24ccf5f0] [c00000000009e62c] xive_irq_shutdown+0x5c/0xe0
[ 1007.360795] [c000007f24ccf630] [c00000000019e4a0] irq_shutdown+0x60/0xe0
[ 1007.360813] [c000007f24ccf660] [c000000000198c44] __free_irq+0x3a4/0x420
[ 1007.360831] [c000007f24ccf700] [c000000000198dc8] free_irq+0x78/0xe0
[ 1007.360849] [c000007f24ccf730] [c00000000096c5a8] vfio_msi_set_vector_signal+0xa8/0x350
[ 1007.360878] [c000007f24ccf7f0] [c00000000096c938] vfio_msi_set_block+0xe8/0x1e0
[ 1007.360899] [c000007f24ccf850] [c00000000096cae0] vfio_msi_disable+0xb0/0x110
[ 1007.360912] [c000007f24ccf8a0] [c00000000096cd04] vfio_pci_set_msi_trigger+0x1c4/0x3d0
[ 1007.360922] [c000007f24ccf910] [c00000000096d910] vfio_pci_set_irqs_ioctl+0xa0/0x170
[ 1007.360941] [c000007f24ccf930] [c00000000096b400] vfio_pci_disable+0x80/0x5e0
[ 1007.360963] [c000007f24ccfa10] [c00000000096b9bc] vfio_pci_release+0x5c/0x90
[ 1007.360991] [c000007f24ccfa40] [c000000000963a9c] vfio_device_fops_release+0x3c/0x70
[ 1007.361012] [c000007f24ccfa70] [c0000000003b5668] __fput+0xc8/0x2b0
[ 1007.361040] [c000007f24ccfac0] [c0000000001409b0] task_work_run+0x140/0x1b0
[ 1007.361059] [c000007f24ccfb20] [c000000000118f8c] do_exit+0x3ac/0xd00
[ 1007.361076] [c000007f24ccfc00] [c0000000001199b0] do_group_exit+0x60/0x100
[ 1007.361094] [c000007f24ccfc40] [c00000000012b514] get_signal+0x1a4/0x8f0
[ 1007.361112] [c000007f24ccfd30] [c000000000021cc8] do_notify_resume+0x1a8/0x430
[ 1007.361141] [c000007f24ccfe20] [c00000000000e444] ret_from_except_lite+0x70/0x74
[ 1007.361159] Instruction dump:
[ 1007.361175] 38422c00 e9230000 712a0004 41820010 548a2036 7d442378 78840020 71290020
[ 1007.361194] 4082004c e9230010 7c892214 7c0004ac <e9240000> 0c090000 4c00012c 792a0022
Cc: stable@vger.kernel.org # v4.12+
Fixes: 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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The XICS-on-XIVE KVM device needs to allocate XIVE event queues when a
priority is used by the OS. This is referred as EQ provisioning and it
is done under the hood when :
1. a CPU is hot-plugged in the VM
2. the "set-xive" is called at VM startup
3. sources are restored at VM restore
The kvm->lock mutex is used to protect the different XIVE structures
being modified but in some contexts, kvm->lock is taken under the
vcpu->mutex which is not permitted by the KVM locking rules.
Introduce a new mutex 'lock' for the KVM devices for them to
synchronize accesses to the XIVE device structures.
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Checking "SecureBoot" mode is not sufficient, also check "SetupMode".
Fixes: 399574c64eaf ("x86/ima: retry detecting secure boot mode")
Reported-by: Matthew Garrett <mjg59@google.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
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Fixes gcc '-Wunused-but-set-variable' warning:
arch/mips/kernel/uprobes.c: In function 'arch_uprobe_pre_xol':
arch/mips/kernel/uprobes.c:115:17: warning: variable 'epc' set but not used [-Wunused-but-set-variable]
It's never used since introduction in
commit 40e084a506eb ("MIPS: Add uprobes support.")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: <ralf@linux-mips.org>
Cc: <jhogan@kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: <linux-mips@vger.kernel.org>
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This patch fixes a complain about possible sleep during
spinlock aquired
"BUG: sleeping function called from invalid context at
include/crypto/algapi.h:426"
for the ctr(aes) and ctr(des) s390 specific ciphers.
Instead of using a spinlock this patch introduces a mutex
which is save to be held in sleeping context. Please note
a deadlock is not possible as mutex_trylock() is used.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reported-by: Julian Wiedmann <jwi@linux.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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The pistachio platform uses the U-Boot bootloader & generally boots a
kernel in the uImage format. As such it's useful to build one when
building the kernel, but to do so currently requires the user to
manually specify a uImage target on the make command line.
Make uImage.gz the pistachio platform's default build target, so that
the default is to build a kernel image that we can actually boot on a
board such as the MIPS Creator Ci40.
Marked for stable backport as far as v4.1 where pistachio support was
introduced. This is primarily useful for CI systems such as kernelci.org
which will benefit from us building a suitable image which can then be
booted as part of automated testing, extending our test coverage to the
affected stable branches.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
URL: https://groups.io/g/kernelci/message/388
Cc: stable@vger.kernel.org # v4.1+
Cc: linux-mips@vger.kernel.org
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virt_addr_valid() really returns a boolean value, but currently uses an
integer to represent it. Switch to the bool type to make it clearer that
we really are returning a true or false value.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: linux-mips@vger.kernel.org
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The virt_addr_valid() function is meant to return true iff
virt_to_page() will return a valid struct page reference. This is true
iff the address provided is found within the unmapped address range
between PAGE_OFFSET & MAP_BASE, but we don't currently check for that
condition. Instead we simply mask the address to obtain what will be a
physical address if the virtual address is indeed in the desired range,
shift it to form a PFN & then call pfn_valid(). This can incorrectly
return true if called with a virtual address which, after masking,
happens to form a physical address corresponding to a valid PFN.
For example we may vmalloc an address in the kernel mapped region
starting a MAP_BASE & obtain the virtual address:
addr = 0xc000000000002000
When masked by virt_to_phys(), which uses __pa() & in turn CPHYSADDR(),
we obtain the following (bogus) physical address:
addr = 0x2000
In a common system with PHYS_OFFSET=0 this will correspond to a valid
struct page which should really be accessed by virtual address
PAGE_OFFSET+0x2000, causing virt_addr_valid() to incorrectly return 1
indicating that the original address corresponds to a struct page.
This is equivalent to the ARM64 change made in commit ca219452c6b8
("arm64: Correctly bounds check virt_addr_valid").
This fixes fallout when hardened usercopy is enabled caused by the
related commit 517e1fbeb65f ("mm/usercopy: Drop extra
is_vmalloc_or_module() check") which removed a check for the vmalloc
range that was present from the introduction of the hardened usercopy
feature.
Signed-off-by: Paul Burton <paul.burton@mips.com>
References: ca219452c6b8 ("arm64: Correctly bounds check virt_addr_valid")
References: 517e1fbeb65f ("mm/usercopy: Drop extra is_vmalloc_or_module() check")
Reported-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: YunQiang Su <ysu@wavecomp.com>
URL: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929366
Cc: stable@vger.kernel.org # v4.12+
Cc: linux-mips@vger.kernel.org
Cc: Yunqiang Su <ysu@wavecomp.com>
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As synchronous exceptions really only make sense against the current
task (otherwise how are you synchronous) remove the task parameter
from from force_sig_fault to make it explicit that is what is going
on.
The two known exceptions that deliver a synchronous exception to a
stopped ptraced task have already been changed to
force_sig_fault_to_task.
The callers have been changed with the following emacs regular expression
(with obvious variations on the architectures that take more arguments)
to avoid typos:
force_sig_fault[(]\([^,]+\)[,]\([^,]+\)[,]\([^,]+\)[,]\W+current[)]
->
force_sig_fault(\1,\2,\3)
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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current
In preparation for removing the task parameter from force_sig_fault
introduce force_sig_fault_to_task and use it for the two cases where
it matters.
On mips force_fcr31_sig calls force_sig_fault and is called on either
the current task, or a task that is suspended and is being switched to
by the scheduler. This is safe because the task being switched to by
the scheduler is guaranteed to be suspended. This ensures that
task->sighand is stable while the signal is delivered to it.
On parisc user_enable_single_step calls force_sig_fault and is in turn
called by ptrace_request. The function ptrace_request always calls
user_enable_single_step on a child that is stopped for tracing. The
child being traced and not reaped ensures that child->sighand is not
NULL, and that the child will not change child->sighand.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Update the calls of force_sig_fault that pass in a variable that is
set to current earlier to explicitly use current.
This is to make the next change that removes the task parameter
from force_sig_fault easier to verify.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The __do_user_fault function is always called with tsk == current.
Make that obvious by removing the tsk parameter.
This makes it clear that __do_user_fault calls force_sig_fault
on the current task.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The __do_user_fault function is always called with tsk == current.
Make that obvious by removing the tsk parameter.
This makes it clear that __do_user_fault calls force_sig_fault
on the current task.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The ptrace_break function is always called with tsk == current.
Make that obvious by removing the tsk parameter.
This also makes it clear that ptrace_break calls force_sig_fault
on the current task.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The send_sigtrap function is always called with tsk == current.
Make that obvious by removing the tsk parameter.
This also makes it clear that send_sigtrap always calls
force_sig_fault on the current task.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The do_trap function is always called with tsk == current.
Make that obvious by removing the tsk parameter.
This also makes it clear that do_trap calls force_sig_fault
on the current task.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The force_sig_info_fault function is always called with tsk == current.
Make that explicit by removing the tsk parameter.
This also makes it clear that the sh force_sig_info_fault passes
current into force_sig_fault.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The send_sigtrap function is always called with task == current. Make
that explicit by removing the task parameter.
This also makes it clear that the uml send_sigtrap passes current
into force_sig_fault.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The send_sigtrap function is always called with task == current. Make
that explicit by removing the task parameter.
This also makes it clear that the x86 send_sigtrap passes current
into force_sig_fault.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Calling sys_ni_syscall through a syscall_fn_t pointer trips indirect
call Control-Flow Integrity checking due to a function type
mismatch. Use SYSCALL_DEFINE0 for __arm64_sys_ni_syscall instead and
remove the now unnecessary casts.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Although a syscall defined using SYSCALL_DEFINE0 doesn't accept
parameters, use the correct function type to avoid indirect call
type mismatches with Control-Flow Integrity checking.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Syscall wrappers in <asm/syscall_wrapper.h> use const struct pt_regs *
as the argument type. Use const in syscall_fn_t as well to fix indirect
call type mismatches with Control-Flow Integrity checking.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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I don't think this is userspace visible but SIGKILL does not have
any si_codes that use the fault member of the siginfo union. Correct
this the simple way and call force_sig instead of force_sig_fault when
the signal is SIGKILL.
The two know places where synchronous SIGKILL are generated are
do_bad_area and fpsimd_save. The call paths to force_sig_fault are:
do_bad_area
arm64_force_sig_fault
force_sig_fault
force_signal_inject
arm64_notify_die
arm64_force_sig_fault
force_sig_fault
Which means correcting this in arm64_force_sig_fault is enough
to ensure the arm64 code is not misusing the generic code, which
could lead to maintenance problems later.
Cc: stable@vger.kernel.org
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: af40ff687bc9 ("arm64: signal: Ensure si_code is valid for all fault signals")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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When a vCPU is connected to the KVM device, it is done using its vCPU
identifier in the guest. Fix the enforced limit on the vCPU identifier
by taking into account the SMT mode.
Reported-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Tested-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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When a CPU is hot-unplugged, the EQ is deconfigured using a zero size
and a zero address. In this case, there is no need to check the flag
and queue size validity. Move the checks after the queue reset code
section to fix CPU hot-unplug.
Reported-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Tested-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Improve the release of the XIVE KVM device by clearing the file
address_space, which is used to unmap the interrupt ESB pages when a
device is passed-through.
Suggested-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Currently the HV KVM code takes the kvm->lock around calls to
kvm_for_each_vcpu() and kvm_get_vcpu_by_id() (which can call
kvm_for_each_vcpu() internally). However, that leads to a lock
order inversion problem, because these are called in contexts where
the vcpu mutex is held, but the vcpu mutexes nest within kvm->lock
according to Documentation/virtual/kvm/locking.txt. Hence there
is a possibility of deadlock.
To fix this, we simply don't take the kvm->lock mutex around these
calls. This is safe because the implementations of kvm_for_each_vcpu()
and kvm_get_vcpu_by_id() have been designed to be able to be called
locklessly.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Currently the Book 3S KVM code uses kvm->lock to synchronize access
to the kvm->arch.rtas_tokens list. Because this list is scanned
inside kvmppc_rtas_hcall(), which is called with the vcpu mutex held,
taking kvm->lock cause a lock inversion problem, which could lead to
a deadlock.
To fix this, we add a new mutex, kvm->arch.rtas_token_lock, which nests
inside the vcpu mutexes, and use that instead of kvm->lock when
accessing the rtas token list.
This removes the lockdep_assert_held() in kvmppc_rtas_tokens_free().
At this point we don't hold the new mutex, but that is OK because
kvmppc_rtas_tokens_free() is only called when the whole VM is being
destroyed, and at that point nothing can be looking up a token in
the list.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Currently the HV KVM code uses kvm->lock in conjunction with a flag,
kvm->arch.mmu_ready, to synchronize MMU setup and hold off vcpu
execution until the MMU-related data structures are ready. However,
this means that kvm->lock is being taken inside vcpu->mutex, which
is contrary to Documentation/virtual/kvm/locking.txt and results in
lockdep warnings.
To fix this, we add a new mutex, kvm->arch.mmu_setup_lock, which nests
inside the vcpu mutexes, and is taken in the places where kvm->lock
was taken that are related to MMU setup.
Additionally we take the new mutex in the vcpu creation code at the
point where we are creating a new vcore, in order to provide mutual
exclusion with kvmppc_update_lpcr() and ensure that an update to
kvm->arch.lpcr doesn't get missed, which could otherwise lead to a
stale vcore->lpcr value.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
|
|
Currently, kvmppc_xive_release() and kvmppc_xive_native_release() clear
kvm->arch.mmu_ready and call kick_all_cpus_sync() as a way of ensuring
that no vcpus are executing in the guest. However, future patches will
change the mutex associated with kvm->arch.mmu_ready to a new mutex that
nests inside the vcpu mutexes, making it difficult to continue to use
this method.
In fact, taking the vcpu mutex for a vcpu excludes execution of that
vcpu, and we already take the vcpu mutex around the call to
kvmppc_xive_[native_]cleanup_vcpu(). Once the cleanup function is
done and we release the vcpu mutex, the vcpu can execute once again,
but because we have cleared vcpu->arch.xive_vcpu, vcpu->arch.irq_type,
vcpu->arch.xive_esc_vaddr and vcpu->arch.xive_esc_raddr, that vcpu will
not be going into XIVE code any more. Thus, once we have cleaned up
all of the vcpus, we are safe to clean up the rest of the XIVE state,
and we don't need to use kvm->arch.mmu_ready to hold off vcpu execution.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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|
Initial bring-up of the platform was done on FPGA prototype
where TI's DP83867 PHY was used. And so some specific PHY
options were added.
Just to confirm this is what we get on FPGA prototype in the bootlog:
| TI DP83867 stmmac-0:00: attached PHY driver [TI DP83867] ...
On real board though we have Micrel KZS9031 PHY and we even have
CONFIG_MICREL_PHY=y set in hsdk_defconfig. That's what we see in the bootlog:
| Micrel KSZ9031 Gigabit PHY stmmac-0:00: ...
So essentially all TI-related bits have to go away.
Cc: Rob Herring <robh+dt@kernel.org>
Acked-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
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HSDK board has built-in Vivante GPU IP which works perfectly fine
with Etnaviv driver, so let's use it.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
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HSDK SOC has CREG GPIO controller which can be used to control
SPI chip select lines.
Enable it in preparation of enabling SPI peripherals.
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
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Fix build errors on ia64 when DISCONTIGMEM=y and NUMA=y by
exporting paddr_to_nid().
Fixes these build errors:
ERROR: "paddr_to_nid" [sound/core/snd-pcm.ko] undefined!
ERROR: "paddr_to_nid" [net/sunrpc/sunrpc.ko] undefined!
ERROR: "paddr_to_nid" [fs/cifs/cifs.ko] undefined!
ERROR: "paddr_to_nid" [drivers/video/fbdev/core/fb.ko] undefined!
ERROR: "paddr_to_nid" [drivers/usb/mon/usbmon.ko] undefined!
ERROR: "paddr_to_nid" [drivers/usb/core/usbcore.ko] undefined!
ERROR: "paddr_to_nid" [drivers/md/raid1.ko] undefined!
ERROR: "paddr_to_nid" [drivers/md/dm-mod.ko] undefined!
ERROR: "paddr_to_nid" [drivers/md/dm-crypt.ko] undefined!
ERROR: "paddr_to_nid" [drivers/md/dm-bufio.ko] undefined!
ERROR: "paddr_to_nid" [drivers/ide/ide-core.ko] undefined!
ERROR: "paddr_to_nid" [drivers/ide/ide-cd_mod.ko] undefined!
ERROR: "paddr_to_nid" [drivers/gpu/drm/drm.ko] undefined!
ERROR: "paddr_to_nid" [drivers/char/agp/agpgart.ko] undefined!
ERROR: "paddr_to_nid" [drivers/block/nbd.ko] undefined!
ERROR: "paddr_to_nid" [drivers/block/loop.ko] undefined!
ERROR: "paddr_to_nid" [drivers/block/brd.ko] undefined!
ERROR: "paddr_to_nid" [crypto/ccm.ko] undefined!
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 1cf24a2cc3fd
("arm64/module: deal with ambiguity in PRELxx relocation ranges")
updated the overflow checking logic in the relocation handling code to
ensure that PREL16/32 relocations don't overflow signed quantities.
However, the same code path is used for absolute relocations, where the
interpretation is the opposite: the only current use case for absolute
relocations operating on non-native word size quantities is the CRC32
handling in the CONFIG_MODVERSIONS code, and these CRCs are unsigned
32-bit quantities, which are now being rejected by the module loader
if bit 31 happens to be set.
So let's use different ranges for quanties subject to absolute vs.
relative relocations:
- ABS16/32 relocations should be in the range [0, Uxx_MAX)
- PREL16/32 relocations should be in the range [Sxx_MIN, Sxx_MAX)
- otherwise, print an error since no other 16 or 32 bit wide data
relocations are currently supported.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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KVM_CAP_MAX_VCPU_ID is currently always reporting KVM_MAX_VCPU_ID on all
architectures. However, on s390x, the amount of usable CPUs is determined
during runtime - it is depending on the features of the machine the code
is running on. Since we are using the vcpu_id as an index into the SCA
structures that are defined by the hardware (see e.g. the sca_add_vcpu()
function), it is not only the amount of CPUs that is limited by the hard-
ware, but also the range of IDs that we can use.
Thus KVM_CAP_MAX_VCPU_ID must be determined during runtime on s390x, too.
So the handling of KVM_CAP_MAX_VCPU_ID has to be moved from the common
code into the architecture specific code, and on s390x we have to return
the same value here as for KVM_CAP_MAX_VCPUS.
This problem has been discovered with the kvm_create_max_vcpus selftest.
With this change applied, the selftest now passes on s390x, too.
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190523164309.13345-9-thuth@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
|
|
The current kernel uses improved crypto selftests. These
tests showed that the current implementation of gcm-aes-s390
is not able to deal with chunks of output buffers which are
not a multiple of 16 bytes. This patch introduces a rework
of the gcm aes s390 scatter walk handling which now is able
to handle any input and output scatter list chunk sizes
correctly.
Code has been verified by the crypto selftests, the tcrypt
kernel module and additional tests ran via the af_alg interface.
Cc: <stable@vger.kernel.org>
Reported-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Patrick Steuer <steuer@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
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The zcrypt device driver does not handle CPRBs which address
a control domain correctly. This fix introduces a workaround:
The domain field of the request CPRB is checked if there is
a valid domain value in there. If this is true and the value
is a control only domain (a domain which is enabled in the
crypto config ADM mask but disabled in the AQM mask) the
CPRB is forwarded to the default usage domain. If there is
no default domain, the request is rejected with an ENODEV.
This fix is important for maintaining crypto adapters. For
example one LPAR can use a crypto adapter domain ('Control
and Usage') but another LPAR needs to be able to maintain
this adapter domain ('Control'). Scenarios like this did
not work properly and the patch enables this.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
|
Adjust bus resources depending on the usage of MIO instructions.
Fixes: 71ba41c9b1d9 ("s390/pci: provide support for MIO instructions")
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
|
Recent firmware will store PCI MIO information also when enabling MIO
instructions via set PCI function. We do not use this information but
currently calling enable MIO will fail because of insufficient response
block length. Fix this by putting a struct mio_info at the end of the
affected response block struct.
Fixes: 71ba41c9b1d9 ("s390/pci: provide support for MIO instructions")
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
|
Commit e60fb8bf68d4 ("s390/cpacf: mark scpacf_query() as __always_inline")
was not enough to make sure to meet the 'i' (immediate) constraint for the
asm operands.
With CONFIG_OPTIMIZE_INLINING enabled, Laura Abbott reported error
with gcc 9.1.1:
In file included from arch/s390/crypto/prng.c:29:
./arch/s390/include/asm/cpacf.h: In function 'cpacf_query_func':
./arch/s390/include/asm/cpacf.h:170:2: warning: asm operand 3 probably doesn't match constraints
170 | asm volatile(
| ^~~
./arch/s390/include/asm/cpacf.h:170:2: error: impossible constraint in 'asm'
Add more __always_inline to force inlining.
Fixes: 9012d011660e ("compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING")
Reported-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
