mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-12 21:44:06 +08:00
3d8dfe75ef
- Pseudo NMI support for arm64 using GICv3 interrupt priorities - uaccess macros clean-up (unsafe user accessors also merged but reverted, waiting for objtool support on arm64) - ptrace regsets for Pointer Authentication (ARMv8.3) key management - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the riscv maintainers) - arm64/perf updates: PMU bindings converted to json-schema, unused variable and misleading comment removed - arm64/debug fixes to ensure checking of the triggering exception level and to avoid the propagation of the UNKNOWN FAR value into the si_code for debug signals - Workaround for Fujitsu A64FX erratum 010001 - lib/raid6 ARM NEON optimisations - NR_CPUS now defaults to 256 on arm64 - Minor clean-ups (documentation/comments, Kconfig warning, unused asm-offsets, clang warnings) - MAINTAINERS update for list information to the ARM64 ACPI entry -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAlyCl0cACgkQa9axLQDI XvEyKxAAiogBZLbyhcy8bTUHVzVoJE0FyAkdO2wWnnaff2Ohkhy1Y/npv33IeK2q RknxqDIx2DUUVPJNRZGoI/WwBtTZdKaAnW4rIKG84yC1eAkFcd96WQasaZzcp1qY HmvbJiYXM0bh+0J7i3Wgry/QzOkrltJFJW2kp6Wd5aFE+R1WyWyxT6d+Fp0J3vlA bT70jlpBK6LXEOmmBS+04Ml02+8MvaGxIl8EInBHSfDLRLErj5E8n41rRHKUiSWz maWI+kVoLYwOE68xiZlDftUBEeQpUSWgg2nxeK+640QSl1wJmVcRcY9nm6TZeMG2 AiZTR9a7cP5rrdSN5suUmb7d4AMMVlVMisGDlwb+9oCxeTRDzg0uwACaVgHfPqQr UeBdHbL9nStN7uBH23H8L9mKk+tqpFmk0sgzdrKejOwysAiqWV8aazb/Na3qnVRl J1B5opxMnGOsjXmHvtG/tiZl281Uwz5ZmzfLmIY3gUZgUgdA3511Egp0ry5y1dzJ SkYC4Hmzb2ybQvXGIDDa3OzCwXXiqyqKsO+O8Egg1k4OIwbp3w+NHE7gKeA+dMgD gjN7zEalCUi46Q28xiCPEb+88BpQ18czIWGQLb9mAnmYeZPjqqenXKXuRHr4lgVe jPURJ/vqvFEglZJN1RDuQHKzHEcm5f2XE566sMZYdSoeiUCb0QM= =2U56 -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - Pseudo NMI support for arm64 using GICv3 interrupt priorities - uaccess macros clean-up (unsafe user accessors also merged but reverted, waiting for objtool support on arm64) - ptrace regsets for Pointer Authentication (ARMv8.3) key management - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the riscv maintainers) - arm64/perf updates: PMU bindings converted to json-schema, unused variable and misleading comment removed - arm64/debug fixes to ensure checking of the triggering exception level and to avoid the propagation of the UNKNOWN FAR value into the si_code for debug signals - Workaround for Fujitsu A64FX erratum 010001 - lib/raid6 ARM NEON optimisations - NR_CPUS now defaults to 256 on arm64 - Minor clean-ups (documentation/comments, Kconfig warning, unused asm-offsets, clang warnings) - MAINTAINERS update for list information to the ARM64 ACPI entry * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (54 commits) arm64: mmu: drop paging_init comments arm64: debug: Ensure debug handlers check triggering exception level arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals Revert "arm64: uaccess: Implement unsafe accessors" arm64: avoid clang warning about self-assignment arm64: Kconfig.platforms: fix warning unmet direct dependencies lib/raid6: arm: optimize away a mask operation in NEON recovery routine lib/raid6: use vdupq_n_u8 to avoid endianness warnings arm64: io: Hook up __io_par() for inX() ordering riscv: io: Update __io_[p]ar() macros to take an argument asm-generic/io: Pass result of I/O accessor to __io_[p]ar() arm64: Add workaround for Fujitsu A64FX erratum 010001 arm64: Rename get_thread_info() arm64: Remove documentation about TIF_USEDFPU arm64: irqflags: Fix clang build warnings arm64: Enable the support of pseudo-NMIs arm64: Skip irqflags tracing for NMI in IRQs disabled context arm64: Skip preemption when exiting an NMI arm64: Handle serror in NMI context irqchip/gic-v3: Allow interrupts to be set as pseudo-NMI ...
86 lines
5.5 KiB
Plaintext
86 lines
5.5 KiB
Plaintext
Silicon Errata and Software Workarounds
|
|
=======================================
|
|
|
|
Author: Will Deacon <will.deacon@arm.com>
|
|
Date : 27 November 2015
|
|
|
|
It is an unfortunate fact of life that hardware is often produced with
|
|
so-called "errata", which can cause it to deviate from the architecture
|
|
under specific circumstances. For hardware produced by ARM, these
|
|
errata are broadly classified into the following categories:
|
|
|
|
Category A: A critical error without a viable workaround.
|
|
Category B: A significant or critical error with an acceptable
|
|
workaround.
|
|
Category C: A minor error that is not expected to occur under normal
|
|
operation.
|
|
|
|
For more information, consult one of the "Software Developers Errata
|
|
Notice" documents available on infocenter.arm.com (registration
|
|
required).
|
|
|
|
As far as Linux is concerned, Category B errata may require some special
|
|
treatment in the operating system. For example, avoiding a particular
|
|
sequence of code, or configuring the processor in a particular way. A
|
|
less common situation may require similar actions in order to declassify
|
|
a Category A erratum into a Category C erratum. These are collectively
|
|
known as "software workarounds" and are only required in the minority of
|
|
cases (e.g. those cases that both require a non-secure workaround *and*
|
|
can be triggered by Linux).
|
|
|
|
For software workarounds that may adversely impact systems unaffected by
|
|
the erratum in question, a Kconfig entry is added under "Kernel
|
|
Features" -> "ARM errata workarounds via the alternatives framework".
|
|
These are enabled by default and patched in at runtime when an affected
|
|
CPU is detected. For less-intrusive workarounds, a Kconfig option is not
|
|
available and the code is structured (preferably with a comment) in such
|
|
a way that the erratum will not be hit.
|
|
|
|
This approach can make it slightly onerous to determine exactly which
|
|
errata are worked around in an arbitrary kernel source tree, so this
|
|
file acts as a registry of software workarounds in the Linux Kernel and
|
|
will be updated when new workarounds are committed and backported to
|
|
stable kernels.
|
|
|
|
| Implementor | Component | Erratum ID | Kconfig |
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
|
| Allwinner | A64/R18 | UNKNOWN1 | SUN50I_ERRATUM_UNKNOWN1 |
|
|
| | | | |
|
|
| ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 |
|
|
| ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 |
|
|
| ARM | Cortex-A53 | #824069 | ARM64_ERRATUM_824069 |
|
|
| ARM | Cortex-A53 | #819472 | ARM64_ERRATUM_819472 |
|
|
| ARM | Cortex-A53 | #845719 | ARM64_ERRATUM_845719 |
|
|
| ARM | Cortex-A53 | #843419 | ARM64_ERRATUM_843419 |
|
|
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
|
|
| ARM | Cortex-A57 | #852523 | N/A |
|
|
| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
|
|
| ARM | Cortex-A72 | #853709 | N/A |
|
|
| ARM | Cortex-A73 | #858921 | ARM64_ERRATUM_858921 |
|
|
| ARM | Cortex-A55 | #1024718 | ARM64_ERRATUM_1024718 |
|
|
| ARM | Cortex-A76 | #1188873 | ARM64_ERRATUM_1188873 |
|
|
| ARM | Cortex-A76 | #1165522 | ARM64_ERRATUM_1165522 |
|
|
| ARM | Cortex-A76 | #1286807 | ARM64_ERRATUM_1286807 |
|
|
| ARM | MMU-500 | #841119,#826419 | N/A |
|
|
| | | | |
|
|
| Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 |
|
|
| Cavium | ThunderX ITS | #23144 | CAVIUM_ERRATUM_23144 |
|
|
| Cavium | ThunderX GICv3 | #23154 | CAVIUM_ERRATUM_23154 |
|
|
| Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 |
|
|
| Cavium | ThunderX Core | #30115 | CAVIUM_ERRATUM_30115 |
|
|
| Cavium | ThunderX SMMUv2 | #27704 | N/A |
|
|
| Cavium | ThunderX2 SMMUv3| #74 | N/A |
|
|
| Cavium | ThunderX2 SMMUv3| #126 | N/A |
|
|
| | | | |
|
|
| Freescale/NXP | LS2080A/LS1043A | A-008585 | FSL_ERRATUM_A008585 |
|
|
| | | | |
|
|
| Hisilicon | Hip0{5,6,7} | #161010101 | HISILICON_ERRATUM_161010101 |
|
|
| Hisilicon | Hip0{6,7} | #161010701 | N/A |
|
|
| Hisilicon | Hip07 | #161600802 | HISILICON_ERRATUM_161600802 |
|
|
| | | | |
|
|
| Qualcomm Tech. | Kryo/Falkor v1 | E1003 | QCOM_FALKOR_ERRATUM_1003 |
|
|
| Qualcomm Tech. | Falkor v1 | E1009 | QCOM_FALKOR_ERRATUM_1009 |
|
|
| Qualcomm Tech. | QDF2400 ITS | E0065 | QCOM_QDF2400_ERRATUM_0065 |
|
|
| Qualcomm Tech. | Falkor v{1,2} | E1041 | QCOM_FALKOR_ERRATUM_1041 |
|
|
| Fujitsu | A64FX | E#010001 | FUJITSU_ERRATUM_010001 |
|