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Changes in 4.9.332 ocfs2: clear dinode links count in case of error ocfs2: fix BUG when iput after ocfs2_mknod fails ata: ahci-imx: Fix MODULE_ALIAS ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS arm64: errata: Remove AES hwcap for COMPAT tasks HID: magicmouse: Do not set BTN_MOUSE on double report net/atm: fix proc_mpc_write incorrect return value net: hns: fix possible memory leak in hnae_ae_register() ACPI: video: Force backlight native for more TongFang devices ALSA: Use del_timer_sync() before freeing timer ALSA: au88x0: use explicitly signed char USB: add RESET_RESUME quirk for NVIDIA Jetson devices in RCM usb: bdc: change state when port disconnected xhci: Remove device endpoints from bandwidth list when freeing the device tools: iio: iio_utils: fix digit calculation fbdev: smscufx: Fix several use-after-free bugs mac802154: Fix LQI recording drm/msm/hdmi: fix memory corruption with too many bridges mmc: core: Fix kernel panic when remove non-standard SDIO card kernfs: fix use-after-free in __kernfs_remove s390/futex: add missing EX_TABLE entry to __futex_atomic_op() Xen/gntdev: don't ignore kernel unmapping error xen/gntdev: Prevent leaking grants mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages net: ieee802154: fix error return code in dgram_bind() drm/msm: Fix return type of mdp4_lvds_connector_mode_valid arc: iounmap() arg is volatile ALSA: ac97: fix possible memory leak in snd_ac97_dev_register() kcm: annotate data-races around kcm->rx_psock kcm: annotate data-races around kcm->rx_wait net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY tcp: fix indefinite deferral of RTO with SACK reneging can: mscan: mpc5xxx: mpc5xxx_can_probe(): add missing put_clock() in error path media: vivid: s_fbuf: add more sanity checks media: vivid: dev->bitmap_cap wasn't freed in all cases media: v4l2-dv-timings: add sanity checks for blanking values media: videodev2.h: V4L2_DV_BT_BLANKING_HEIGHT should check 'interlaced' i40e: Fix ethtool rx-flow-hash setting for X722 net: ksz884x: fix missing pci_disable_device() on error in pcidev_init() ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev() ALSA: aoa: Fix I2S device accounting openvswitch: switch from WARN to pr_warn net: ehea: fix possible memory leak in ehea_register_port() can: rcar_canfd: rcar_canfd_handle_global_receive(): fix IRQ storm on global FIFO receive Linux 4.9.332 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I34f534c6b1ba325afd8991a2731dab1bac206c0c
72 lines
4.3 KiB
Plaintext
72 lines
4.3 KiB
Plaintext
Silicon Errata and Software Workarounds
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=======================================
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Author: Will Deacon <will.deacon@arm.com>
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Date : 27 November 2015
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It is an unfortunate fact of life that hardware is often produced with
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so-called "errata", which can cause it to deviate from the architecture
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under specific circumstances. For hardware produced by ARM, these
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errata are broadly classified into the following categories:
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Category A: A critical error without a viable workaround.
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Category B: A significant or critical error with an acceptable
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workaround.
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Category C: A minor error that is not expected to occur under normal
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operation.
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For more information, consult one of the "Software Developers Errata
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Notice" documents available on infocenter.arm.com (registration
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required).
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As far as Linux is concerned, Category B errata may require some special
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treatment in the operating system. For example, avoiding a particular
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sequence of code, or configuring the processor in a particular way. A
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less common situation may require similar actions in order to declassify
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a Category A erratum into a Category C erratum. These are collectively
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known as "software workarounds" and are only required in the minority of
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cases (e.g. those cases that both require a non-secure workaround *and*
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can be triggered by Linux).
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For software workarounds that may adversely impact systems unaffected by
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the erratum in question, a Kconfig entry is added under "Kernel
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Features" -> "ARM errata workarounds via the alternatives framework".
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These are enabled by default and patched in at runtime when an affected
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CPU is detected. For less-intrusive workarounds, a Kconfig option is not
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available and the code is structured (preferably with a comment) in such
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a way that the erratum will not be hit.
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This approach can make it slightly onerous to determine exactly which
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errata are worked around in an arbitrary kernel source tree, so this
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file acts as a registry of software workarounds in the Linux Kernel and
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will be updated when new workarounds are committed and backported to
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stable kernels.
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| Implementor | Component | Erratum ID | Kconfig |
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+----------------+-----------------+-----------------+-----------------------------+
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| ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 |
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| ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 |
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| ARM | Cortex-A53 | #824069 | ARM64_ERRATUM_824069 |
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| ARM | Cortex-A53 | #819472 | ARM64_ERRATUM_819472 |
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| ARM | Cortex-A53 | #845719 | ARM64_ERRATUM_845719 |
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| ARM | Cortex-A53 | #843419 | ARM64_ERRATUM_843419 |
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| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
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| ARM | Cortex-A57 | #852523 | N/A |
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| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
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| ARM | Cortex-A57 | #1742098 | ARM64_ERRATUM_1742098 |
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| ARM | Cortex-A72 | #853709 | N/A |
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| ARM | Cortex-A72 | #1655431 | ARM64_ERRATUM_1742098 |
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| ARM | Cortex-A55 | #1024718 | ARM64_ERRATUM_1024718 |
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| ARM | Cortex-A76 | #1188873 | ARM64_ERRATUM_1188873 |
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| ARM | MMU-500 | #841119,#826419 | N/A |
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| Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 |
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| Cavium | ThunderX ITS | #23144 | CAVIUM_ERRATUM_23144 |
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| Cavium | ThunderX GICv3 | #23154 | CAVIUM_ERRATUM_23154 |
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| Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 |
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| Cavium | ThunderX SMMUv2 | #27704 | N/A |
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| Freescale/NXP | LS2080A/LS1043A | A-008585 | FSL_ERRATUM_A008585 |
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| Qualcomm Tech. | QDF2400 ITS | E0065 | QCOM_QDF2400_ERRATUM_0065 |
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