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2017-06-22MAINTAINERS: add entry for Denali NAND controller driverMasahiro Yamada
The Denali NAND controller driver (drivers/mtd/nand/denali*) has been largely reworked by me. Add myself as its maintainer now. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-06-22perf: xgene: Add support for SoC PMU version 3Hoan Tran
This patch adds support for SoC-wide (AKA uncore) Performance Monitoring Unit version 3. It can support up to - 2 IOB PMU instances - 8 L3C PMU instances - 2 MCB PMU instances - 8 MCU PMU instances and these PMUs support 64 bit counter Signed-off-by: Hoan Tran <hotran@apm.com> [Mark: stop counters in _xgene_pmu_isr()] Signed-off-by: Mark Rutland <mark.rutland@arm.com> [will: make xgene_pmu_v3_ops static] Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22perf: xgene: Move PMU leaf functions into function pointer structureHoan Tran
This patch moves PMU leaf functions into a function pointer structure. It helps code maintain and expasion easier. Signed-off-by: Hoan Tran <hotran@apm.com> [Mark: remove redundant cast] Signed-off-by: Mark Rutland <mark.rutland@arm.com> [will: make xgene_pmu_ops static] Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22dt-bindings: gpmc: Correct location of generic gpmc bindingTom Rini
The binding bus/ti-gpmc.txt has been moved to memory-controllers/omap-gpmc.txt. Update all references to this in order to make reading and understanding a given binding easier. Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc:Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Richard Weinberger <richard@nod.at> Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Tom Rini <trini@konsulko.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-06-22dt-bindings: mtd: elm: Correct compatible string requirementTom Rini
The binding says that the compatible string must be "ti,am33xx-elm" but the code checks only for, and all functioning users set, this as "ti,am3352-elm" so correct the binding. Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Richard Weinberger <richard@nod.at> Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Tom Rini <trini@konsulko.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-06-22perf probe: Fix probe definition for inlined functionsBjörn Töpel
In commit 613f050d68a8 ("perf probe: Fix to probe on gcc generated functions in modules"), the offset from symbol is, incorrectly, added to the trace point address. This leads to incorrect probe trace points for inlined functions and when using relative line number on symbols. Prior this patch: $ perf probe -m nf_nat -D in_range p:probe/in_range nf_nat:in_range.isra.9+0 $ perf probe -m i40e -D i40e_clean_rx_irq p:probe/i40e_clean_rx_irq i40e:i40e_napi_poll+2212 $ perf probe -m i40e -D i40e_clean_rx_irq:16 p:probe/i40e_clean_rx_irq i40e:i40e_lan_xmit_frame+626 After: $ perf probe -m nf_nat -D in_range p:probe/in_range nf_nat:in_range.isra.9+0 $ perf probe -m i40e -D i40e_clean_rx_irq p:probe/i40e_clean_rx_irq i40e:i40e_napi_poll+1106 $ perf probe -m i40e -D i40e_clean_rx_irq:16 p:probe/i40e_clean_rx_irq i40e:i40e_napi_poll+2665 Committer testing: Using 'pfunct', a tool found in the 'dwarves' package [1], one can ask what are the functions that while not being explicitely marked as inline, were inlined by the compiler: # pfunct --cc_inlined /lib/modules/4.12.0-rc4+/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko | head __ew32 e1000_regdump e1000e_dump_ps_pages e1000_desc_unused e1000e_systim_to_hwtstamp e1000e_rx_hwtstamp e1000e_update_rdt_wa e1000e_update_tdt_wa e1000_put_txbuf e1000_consume_page Then ask 'perf probe' to produce the kprobe_tracer probe definitions for two of them: # perf probe -m e1000e -D e1000e_rx_hwtstamp p:probe/e1000e_rx_hwtstamp e1000e:e1000_receive_skb+74 # perf probe -m e1000e -D e1000_consume_page p:probe/e1000_consume_page e1000e:e1000_clean_jumbo_rx_irq+876 p:probe/e1000_consume_page_1 e1000e:e1000_clean_jumbo_rx_irq+1506 p:probe/e1000_consume_page_2 e1000e:e1000_clean_rx_irq_ps+1074 Now lets concentrate on the 'e1000_consume_page' one, that was inlined twice in e1000_clean_jumbo_rx_irq(), lets see what readelf says about the DWARF tags for that function: $ readelf -wi /lib/modules/4.12.0-rc4+/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko <SNIP> <1><13e27b>: Abbrev Number: 121 (DW_TAG_subprogram) <13e27c> DW_AT_name : (indirect string, offset: 0xa8945): e1000_clean_jumbo_rx_irq <13e287> DW_AT_low_pc : 0x17a30 <3><13e6ef>: Abbrev Number: 119 (DW_TAG_inlined_subroutine) <13e6f0> DW_AT_abstract_origin: <0x13ed2c> <13e6f4> DW_AT_low_pc : 0x17be6 <SNIP> <1><13ed2c>: Abbrev Number: 142 (DW_TAG_subprogram) <13ed2e> DW_AT_name : (indirect string, offset: 0xa54c3): e1000_consume_page So, the first time in e1000_clean_jumbo_rx_irq() where e1000_consume_page() is inlined is at PC 0x17be6, which subtracted from e1000_clean_jumbo_rx_irq()'s address, gives us the offset we should use in the probe definition: 0x17be6 - 0x17a30 = 438 but above we have 876, which is twice as much. Lets see the second inline expansion of e1000_consume_page() in e1000_clean_jumbo_rx_irq(): <3><13e86e>: Abbrev Number: 119 (DW_TAG_inlined_subroutine) <13e86f> DW_AT_abstract_origin: <0x13ed2c> <13e873> DW_AT_low_pc : 0x17d21 0x17d21 - 0x17a30 = 753 So we where adding it at twice the offset from the containing function as we should. And then after this patch: # perf probe -m e1000e -D e1000e_rx_hwtstamp p:probe/e1000e_rx_hwtstamp e1000e:e1000_receive_skb+37 # perf probe -m e1000e -D e1000_consume_page p:probe/e1000_consume_page e1000e:e1000_clean_jumbo_rx_irq+438 p:probe/e1000_consume_page_1 e1000e:e1000_clean_jumbo_rx_irq+753 p:probe/e1000_consume_page_2 e1000e:e1000_clean_jumbo_rx_irq+1353 # Which matches the two first expansions and shows that because we were doubling the offset it would spill over the next function: readelf -sw /lib/modules/4.12.0-rc4+/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko 673: 0000000000017a30 1626 FUNC LOCAL DEFAULT 2 e1000_clean_jumbo_rx_irq 674: 0000000000018090 2013 FUNC LOCAL DEFAULT 2 e1000_clean_rx_irq_ps This is the 3rd inline expansion of e1000_consume_page() in e1000_clean_jumbo_rx_irq(): <3><13ec77>: Abbrev Number: 119 (DW_TAG_inlined_subroutine) <13ec78> DW_AT_abstract_origin: <0x13ed2c> <13ec7c> DW_AT_low_pc : 0x17f79 0x17f79 - 0x17a30 = 1353 So: 0x17a30 + 2 * 1353 = 0x184c2 And: 0x184c2 - 0x18090 = 1074 Which explains the bogus third expansion for e1000_consume_page() to end up at: p:probe/e1000_consume_page_2 e1000e:e1000_clean_rx_irq_ps+1074 All fixed now :-) [1] https://git.kernel.org/pub/scm/devel/pahole/pahole.git/ Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: stable@vger.kernel.org Fixes: 613f050d68a8 ("perf probe: Fix to probe on gcc generated functions in modules") Link: http://lkml.kernel.org/r/20170621164134.5701-1-bjorn.topel@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-22ARM64: dts: meson-gxl: Add Libre Technology CC supportJerome Brunet
Add support for the CC board from Shenzhen Libre Technology More information about the board are available here: https://libre.computer/blog/ Cc: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-06-22dt-bindings: arm: amlogic: Add Libre Technology CC boardJerome Brunet
Add bindings documentation for the CC board from Shenzhen Libre Technology Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-06-22dt-bindings: add Libre Technology vendor prefixJerome Brunet
Shenzhen Libre Technology Co., Ltd is a single board computer manufacturer Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-06-22perf: xgene: Parse PMU subnode from the match tableHoan Tran
This patch parses PMU Subnode from a match table. Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds
Pull cifs fixes from Steve French: "Various small fixes for stable" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: CIFS: Fix some return values in case of error in 'crypt_message' cifs: remove redundant return in cifs_creation_time_get CIFS: Improve readdir verbosity CIFS: check if pages is null rather than bv for a failed allocation CIFS: Set ->should_dirty in cifs_user_readv()
2017-06-22Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "MIPS: - Fix build with KVM, DYNAMIC_DEBUG and JUMP_LABEL. PPC: - Fix host crashes/hangs on POWER9. - Properly restore userspace state after KVM_RUN ioctl. s390: - Fix address translation in odd-ball cases (real-space designation ASCEs). x86: - Fix privilege escalation in 64-bit Windows guests All patches are for stable and the x86 also has a CVE" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: fix singlestepping over syscall KVM: s390: gaccess: fix real-space designation asce handling for gmap shadows KVM: MIPS: Fix maybe-uninitialized build failure KVM: PPC: Book3S HV: Ignore timebase offset on POWER9 DD1 KVM: PPC: Book3S HV: Save/restore host values of debug registers KVM: PPC: Book3S HV: Preserve userspace HTM state properly KVM: PPC: Book3S HV: Restore critical SPRs to host values on guest exit KVM: PPC: Book3S HV: Context-switch EBB registers properly KVM: PPC: Book3S HV: Cope with host using large decrementer mode
2017-06-22Merge tag 'mfd-fixes-4.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD fixes from Lee Jones: - arizona: use address passed in, rather than hard coded value - correct STM32 clock-names value in DT binding documentation * tag 'mfd-fixes-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: dt-bindings: mfd: Update STM32 timers clock names mfd: arizona: Fix typo using hard-coded register
2017-06-22udp/v6: prefetch rmem_alloc in udp6_queue_rcv_skb()Paolo Abeni
very similar to commit dd99e425be23 ("udp: prefetch rmem_alloc in udp_queue_rcv_skb()"), this allows saving a cache miss when the BH is bottle-neck for UDP over ipv6 packet processing, e.g. for small packets when a single RX NIC ingress queue is in use. Performances under flood when multiple NIC RX queues used are unaffected, but when a single NIC rx queue is in use, this gives ~8% performance improvement. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22Merge branch 'net-mvpp2-misc-improvements'David S. Miller
Thomas Petazzoni says: ==================== net: mvpp2: misc improvements Here are a few patches making various small improvements/refactoring in the mvpp2 driver. They are based on today's net-next. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22net: mvpp2: remove mvpp2_pool_refill()Thomas Petazzoni
When all a function does is calling another function with the exact same arguments, in the exact same order, you know it's time to remove said function. Which is exactly what this commit does. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22net: mvpp2: remove unused mvpp2_bm_cookie_pool_set() functionThomas Petazzoni
This function is not used in the driver, remove it. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22net: mvpp2: add comments about smp_processor_id() usageThomas Petazzoni
A previous commit modified a number of smp_processor_id() used in migration-enabled contexts into get_cpu/put_cpu sections. However, a few smp_processor_id() calls remain in the driver, and this commit adds comments explaining why they can be kept. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22sfc: Fix MCDI command size for filter operationsMartin Habets
The 8000 series adapters uses catch-all filters for encapsulated traffic to support filtering VXLAN, NVGRE and GENEVE traffic. This new filter functionality requires a longer MCDI command. This patch increases the size of buffers on stack that were missed, which fixes a kernel panic from the stack protector. Fixes: 9b41080125176 ("sfc: insert catch-all filters for encapsulated traffic") Signed-off-by: Martin Habets <mhabets@solarflare.com> Acked-by: Edward Cree <ecree@solarflare.com> Acked-by: Bert Kenward bkenward@solarflare.com Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22Merge branch 'stmmac-pci-Refactor-DMI-probing'David S. Miller
Jan Kiszka says: ==================== stmmac: pci: Refactor DMI probing Some cleanups of the way we probe DMI platforms in the driver. Reduces a bit of open-coding and makes the logic easier reusable for any potential DMI platform != Quark. Tested on IOT2000 and Galileo Gen2. Changes in v5: - fixed a remaining issue in patch 5 - dropped patch 6 for now ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22stmmac: pci: Use dmi_system_id table for retrieving PHY addressesJan Kiszka
Avoids reimplementation of DMI matching in stmmac_pci_find_phy_addr. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22stmmac: pci: Select quark_pci_dmi_data from quark_default_dataJan Kiszka
No need to carry this reference in stmmac_pci_info - the Quark-specific setup handler knows that it needs to use the Quark-specific DMI table. This also allows to drop the stmmac_pci_info reference from the setup handler parameter list. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22stmmac: pci: Make stmmac_pci_find_phy_addr truly genericJan Kiszka
Move the special case for the early Galileo firmware into quark_default_setup. This allows to use stmmac_pci_find_phy_addr for non-quark cases. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22stmmac: pci: Use stmmac_pci_info for all devicesJan Kiszka
Make stmmac_default_data compatible with stmmac_pci_info.setup and use an info structure for all devices. This allows to make the probing more regular. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22stmmac: pci: Make stmmac_pci_info structure constantJan Kiszka
By removing the PCI device reference from the structure and passing it as parameters to the interested functions, we can make quark_pci_info const. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22of: find_node_by_full_name rewrite to compare each levelRob Herring
find_node_by_full_name() does the same thing as of_find_node_by_path(), but takes no locks and doesn't work on aliases. Refactor of_find_node_opts_by_path() into __of_find_node_by_full_path() and replace find_node_by_full_name() with it. Signed-off-by: Rob Herring <robh@kernel.org>
2017-06-22of: use kbasename instead of open codingRob Herring
Several places in DT code open code the equivalent of kbasename. Replace them. The behavior for root nodes in node_name_cmp will be slightly different. Instead of comparing "/", "" will be compared. The comparison will be the same. Reviewed-by: Andy Shevchenko <andy.shevhchenko@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-06-22hv_netvsc: Fix the carrier state error when data path is offHaiyang Zhang
When the VF NIC is opened, the synthetic NIC's carrier state is set to off. This tells the host to transitions data path to the VF device. But if startup script or user manipulates the admin state of the netvsc device directly for example: # ifconfig eth0 down # ifconfig eth0 up Then the carrier state of the synthetic NIC would be on, even though the data path was still over the VF NIC. This patch sets the carrier state of synthetic NIC with consideration of the related VF state. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22hv_netvsc: Remove unnecessary var link_state from struct netvsc_device_infoHaiyang Zhang
We simply use rndis_device->link_state in the netdev_dbg. The variable, link_state from struct netvsc_device_info, is not used anywhere else. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22netvsc: don't access netdev->num_rx_queues directlyArnd Bergmann
This structure member is hidden behind CONFIG_SYSFS, and we get a build error when that is disabled: drivers/net/hyperv/netvsc_drv.c: In function 'netvsc_set_channels': drivers/net/hyperv/netvsc_drv.c:754:49: error: 'struct net_device' has no member named 'num_rx_queues'; did you mean 'num_tx_queues'? drivers/net/hyperv/netvsc_drv.c: In function 'netvsc_set_rxfh': drivers/net/hyperv/netvsc_drv.c:1181:25: error: 'struct net_device' has no member named 'num_rx_queues'; did you mean 'num_tx_queues'? As the value is only set once to the argument of alloc_netdev_mq(), we can compare against that constant directly. Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table") Fixes: 2b01888d1b45 ("netvsc: allow more flexible setting of number of channels") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22arm/arm64: KVM: add guest SEA supportTyler Baicar
Currently external aborts are unsupported by the guest abort handling. Add handling for SEAs so that the host kernel reports SEAs which occur in the guest kernel. When an SEA occurs in the guest kernel, the guest exits and is routed to kvm_handle_guest_abort(). Prior to this patch, a print message of an unsupported FSC would be printed and nothing else would happen. With this patch, the code gets routed to the APEI handling of SEAs in the host kernel to report the SEA information. Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22trace, ras: add ARM processor error trace eventTyler Baicar
Currently there are trace events for the various RAS errors with the exception of ARM processor type errors. Add a new trace event for such errors so that the user will know when they occur. These trace events are consistent with the ARM processor error section type defined in UEFI 2.6 spec section N.2.4.4. Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22ras: acpi / apei: generate trace event for unrecognized CPER sectionTyler Baicar
The UEFI spec includes non-standard section type support in the Common Platform Error Record. This is defined in section N.2.3 of UEFI version 2.5. Currently if the CPER section's type (UUID) does not match any section type that the kernel knows how to parse, a trace event is not generated. Generate a trace event which contains the raw error data for non-standard section type error records. Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> CC: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org> Tested-by: Shiju Jose <shiju.jose@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22efi: print unrecognized CPER sectionTyler Baicar
UEFI spec allows for non-standard section in Common Platform Error Record. This is defined in section N.2.3 of UEFI version 2.5. Currently if the CPER section's type (UUID) does not match with one of the section types that the kernel knows how to parse, the section is skipped. Therefore, user is not able to see such CPER data, for instance, error record of non-standard section. This change prints out the raw data in hex in the dmesg buffer so that non-standard sections are reported to the user. Non-standard section type errors should be reported to the user because these can include errors which are vendor specific. The data length is taken from Error Data length field of Generic Error Data Entry. The following is a sample output from dmesg: Hardware error from APEI Generic Hardware Error Source: 2 It has been corrected by h/w and requires no further action event severity: corrected time: precise 2017-03-15 20:37:35 Error 0, type: corrected section type: unknown, d2e2621c-f936-468d-0d84-15a4ed015c8b section length: 0x238 00000000: 4d415201 4d492031 453a4d45 435f4343 .RAM1 IMEM:ECC_C 00000010: 53515f45 44525f42 00000000 00000000 E_QSB_RD........ 00000020: 00000000 00000000 00000000 00000000 ................ 00000030: 00000000 00000000 01010000 01010000 ................ 00000040: 00000000 00000000 00000005 00000000 ................ 00000050: 01010000 00000000 00000001 00dddd00 ................ ... The raw data from the error can then be decoded using vendor specific tools. Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> CC: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org> Reviewed-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22acpi: apei: panic OS with fatal error status blockJonathan (Zhixiong) Zhang
Even if an error status block's severity is fatal, the kernel does not honor the severity level and panic. With the firmware first model, the platform could inform the OS about a fatal hardware error through the non-NMI GHES notification type. The OS should panic when a hardware error record is received with this severity. Call panic() after CPER data in error status block is printed if severity is fatal, before each error section is handled. Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org> Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> Reviewed-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22acpi: apei: handle SEA notification type for ARMv8Tyler Baicar
ARM APEI extension proposal added SEA (Synchronous External Abort) notification type for ARMv8. Add a new GHES error source handling function for SEA. If an error source's notification type is SEA, then this function can be registered into the SEA exception handler. That way GHES will parse and report SEA exceptions when they occur. An SEA can interrupt code that had interrupts masked and is treated as an NMI. To aid this the page of address space for mapping APEI buffers while in_nmi() is always reserved, and ghes_ioremap_pfn_nmi() is changed to use the helper methods to find the prot_t to map with in the same way as ghes_ioremap_pfn_irq(). Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> CC: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org> Reviewed-by: James Morse <james.morse@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22arm64: exception: handle Synchronous External AbortTyler Baicar
SEA exceptions are often caused by an uncorrected hardware error, and are handled when data abort and instruction abort exception classes have specific values for their Fault Status Code. When SEA occurs, before killing the process, report the error in the kernel logs. Update fault_info[] with specific SEA faults so that the new SEA handler is used. Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> CC: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org> Reviewed-by: James Morse <james.morse@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> [will: use NULL instead of 0 when assigning si_addr] Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22ipv6: avoid unregistering inet6_dev for loopbackWANG Cong
The per netns loopback_dev->ip6_ptr is unregistered and set to NULL when its mtu is set to smaller than IPV6_MIN_MTU, this leads to that we could set rt->rt6i_idev NULL after a rt6_uncached_list_flush_dev() and then crash after another call. In this case we should just bring its inet6_dev down, rather than unregistering it, at least prior to commit 176c39af29bc ("netns: fix addrconf_ifdown kernel panic") we always override the case for loopback. Thanks a lot to Andrey for finding a reliable reproducer. Fixes: 176c39af29bc ("netns: fix addrconf_ifdown kernel panic") Reported-by: Andrey Konovalov <andreyknvl@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Daniel Lezcano <dlezcano@fr.ibm.com> Cc: David Ahern <dsahern@gmail.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: David Ahern <dsahern@gmail.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-22dt-bindings: thermal: add file extension to brcm,ns-thermalMarkus Mayer
Add the missing .txt extension to the Broadcom Northstar binding document. Signed-off-by: Markus Mayer <mmayer@broadcom.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-06-22arm64: Remove a redundancy in sysreg.hStefan Traby
This is really trivial; there is a dup (1 << 16) in the code Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Stefan Traby <stefan@hello-penguin.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-06-22KVM: arm/arm64: Signal SIGBUS when stage2 discovers hwpoison memoryJames Morse
Once we enable ARCH_SUPPORTS_MEMORY_FAILURE on arm64, notifications for broken memory can call memory_failure() in mm/memory-failure.c to offline pages of memory, possibly signalling user space processes and notifying all the in-kernel users. memory_failure() has two modes, early and late. Early is used by machine-managers like Qemu to receive a notification when a memory error is notified to the host. These can then be relayed to the guest before the affected page is accessed. To enable this, the process must set PR_MCE_KILL_EARLY in PR_MCE_KILL_SET using the prctl() syscall. Once the early notification has been handled, nothing stops the machine-manager or guest from accessing the affected page. If the machine-manager does this the page will fail to be mapped and SIGBUS will be sent. This patch adds the equivalent path for when the guest accesses the page, sending SIGBUS to the machine-manager. These two signals can be distinguished by the machine-manager using their si_code: BUS_MCEERR_AO for 'action optional' early notifications, and BUS_MCEERR_AR for 'action required' synchronous/late notifications. Do as x86 does, and deliver the SIGBUS when we discover pfn == KVM_PFN_ERR_HWPOISON. Use the hugepage size as si_addr_lsb if this vma was allocated as a hugepage. Transparent hugepages will be split by memory_failure() before we see them here. Cc: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-06-22genirq/irqdomain: Remove auto-recursive hierarchy supportMarc Zyngier
It did seem like a good idea at the time, but it never really caught on, and auto-recursive domains remain unused 3 years after having been introduced. Oh well, time for a late spring cleanup. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-06-22irqchip/MSI: Use irq_domain_update_bus_token instead of an open coded accessMarc Zyngier
Now that we have irq_domain_update_bus_token(), switch everyone over to it. The debugfs code thanks you for your continued support. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-06-22genirq/irqdomain: Add irq_domain_update_bus_token helperMarc Zyngier
We can have irq domains that are identified by the same fwnode (because they are serviced by the same HW), and yet have different functionnality (because they serve different busses, for example). This is what we use the bus_token field. Since we don't use this field when generating the domain name, all the aliasing domains will get the same name, and the debugfs file creation fails. Also, bus_token is updated by individual drivers, and the core code is unaware of that update. In order to sort this mess, let's introduce a helper that takes care of updating bus_token, and regenerate the debugfs file. A separate patch will update all the individual users. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-06-22doc/kokr/howto: Only send regression fixes after -rc1SeongJae Park
This commit applies commit 388f9b20f98d ("Documentation/process/howto: Only send regression fixes after -rc1") to Korean translation. Signed-off-by: SeongJae Park <sj38.park@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-06-22docs-rst: fix broken links to dynamic-debug-howto in kernel-parametersSteffen Maier
Another place in lib/Kconfig.debug was already fixed in commit f8998c226587 ("lib/Kconfig.debug: correct documentation paths"). Fixes: 9d85025b0418 ("docs-rst: create an user's manual book") Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-06-22doc: Document suitability of IBM Verse for kernel developmentStewart Smith
IBM Verse is a web UI around Lotus Domino mail servers (much like the Lotus Notes client talks to Domino servers). For various reasons, it is not at all suitable for kernel development, all of which have been raised (repeatedly) internally. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> Acked-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-06-22of: update ePAPR references to point to Devicetree SpecificationFrank Rowand
The Devicetree Specification has superseded the ePAPR as the base specification for bindings. Update files in Documentation to reference the new document. First reference to ePAPR in Documentation/devicetree/bindings/arm/cci.txt is generic, remove it. Some files are not updated because there is no hypervisor chapter in the Devicetree Specification: Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt Documenation/virtual/kvm/api.txt Documenation/virtual/kvm/ppc-pv.txt Signed-off-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-06-22genirq/affinity: Assign vectors to all present CPUsChristoph Hellwig
Currently the irq vector spread algorithm is restricted to online CPUs, which ties the IRQ mapping to the currently online devices and doesn't deal nicely with the fact that CPUs could come and go rapidly due to e.g. power management. Instead assign vectors to all present CPUs to avoid this churn. Build a map of all possible CPUs for a given node, as the architectures only provide a map of all onlines CPUs. Do this dynamically on each call for the vector assingments, which is a bit suboptimal and could be optimized in the future by provinding a mapping from the arch code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linux-nvme@lists.infradead.org Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170603140403.27379-5-hch@lst.de
2017-06-22x86/apic: Mark single target interruptsThomas Gleixner
If the interrupt destination mode of the APIC is physical then the effective affinity is restricted to a single CPU. Mark the interrupt accordingly in the domain allocation code, so the core code can avoid pointless affinity setting attempts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170619235447.508846202@linutronix.de
generated by cgit (git 2.34.1) at 2025-10-01 23:05:41 +0000