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docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
=======================================
Silicon Errata and Software Workarounds
=======================================
arm64: Documentation: add list of software workarounds for errata It's not immediately obvious which hardware errata are worked around in the Linux kernel for an arbitrary kernel tree, so add a file to keep track of what we're working around. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-11-17 14:45:47 +00:00
Author: Will Deacon <will.deacon@arm.com>
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
arm64: Documentation: add list of software workarounds for errata It's not immediately obvious which hardware errata are worked around in the Linux kernel for an arbitrary kernel tree, so add a file to keep track of what we're working around. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-11-17 14:45:47 +00:00
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:
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
========== ========================================================
Category A A critical error without a viable workaround.
Category B A significant or critical error with an acceptable
arm64: Documentation: add list of software workarounds for errata It's not immediately obvious which hardware errata are worked around in the Linux kernel for an arbitrary kernel tree, so add a file to keep track of what we're working around. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-11-17 14:45:47 +00:00
workaround.
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
Category C A minor error that is not expected to occur under normal
arm64: Documentation: add list of software workarounds for errata It's not immediately obvious which hardware errata are worked around in the Linux kernel for an arbitrary kernel tree, so add a file to keep track of what we're working around. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-11-17 14:45:47 +00:00
operation.
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
========== ========================================================
arm64: Documentation: add list of software workarounds for errata It's not immediately obvious which hardware errata are worked around in the Linux kernel for an arbitrary kernel tree, so add a file to keep track of what we're working around. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-11-17 14:45:47 +00:00
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.
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
+----------------+-----------------+-----------------+-----------------------------+
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
| Implementor | Component | Erratum ID | Kconfig |
+================+=================+=================+=============================+
clocksource/drivers/arch_timer: Workaround for Allwinner A64 timer instability The Allwinner A64 SoC is known[1] to have an unstable architectural timer, which manifests itself most obviously in the time jumping forward a multiple of 95 years[2][3]. This coincides with 2^56 cycles at a timer frequency of 24 MHz, implying that the time went slightly backward (and this was interpreted by the kernel as it jumping forward and wrapping around past the epoch). Investigation revealed instability in the low bits of CNTVCT at the point a high bit rolls over. This leads to power-of-two cycle forward and backward jumps. (Testing shows that forward jumps are about twice as likely as backward jumps.) Since the counter value returns to normal after an indeterminate read, each "jump" really consists of both a forward and backward jump from the software perspective. Unless the kernel is trapping CNTVCT reads, a userspace program is able to read the register in a loop faster than it changes. A test program running on all 4 CPU cores that reported jumps larger than 100 ms was run for 13.6 hours and reported the following: Count | Event -------+--------------------------- 9940 | jumped backward 699ms 268 | jumped backward 1398ms 1 | jumped backward 2097ms 16020 | jumped forward 175ms 6443 | jumped forward 699ms 2976 | jumped forward 1398ms 9 | jumped forward 356516ms 9 | jumped forward 357215ms 4 | jumped forward 714430ms 1 | jumped forward 3578440ms This works out to a jump larger than 100 ms about every 5.5 seconds on each CPU core. The largest jump (almost an hour!) was the following sequence of reads: 0x0000007fffffffff → 0x00000093feffffff → 0x0000008000000000 Note that the middle bits don't necessarily all read as all zeroes or all ones during the anomalous behavior; however the low 10 bits checked by the function in this patch have never been observed with any other value. Also note that smaller jumps are much more common, with backward jumps of 2048 (2^11) cycles observed over 400 times per second on each core. (Of course, this is partially explained by lower bits rolling over more frequently.) Any one of these could have caused the 95 year time skip. Similar anomalies were observed while reading CNTPCT (after patching the kernel to allow reads from userspace). However, the CNTPCT jumps are much less frequent, and only small jumps were observed. The same program as before (except now reading CNTPCT) observed after 72 hours: Count | Event -------+--------------------------- 17 | jumped backward 699ms 52 | jumped forward 175ms 2831 | jumped forward 699ms 5 | jumped forward 1398ms Further investigation showed that the instability in CNTPCT/CNTVCT also affected the respective timer's TVAL register. The following values were observed immediately after writing CNVT_TVAL to 0x10000000: CNTVCT | CNTV_TVAL | CNTV_CVAL | CNTV_TVAL Error --------------------+------------+--------------------+----------------- 0x000000d4a2d8bfff | 0x10003fff | 0x000000d4b2d8bfff | +0x00004000 0x000000d4a2d94000 | 0x0fffffff | 0x000000d4b2d97fff | -0x00004000 0x000000d4a2d97fff | 0x10003fff | 0x000000d4b2d97fff | +0x00004000 0x000000d4a2d9c000 | 0x0fffffff | 0x000000d4b2d9ffff | -0x00004000 The pattern of errors in CNTV_TVAL seemed to depend on exactly which value was written to it. For example, after writing 0x10101010: CNTVCT | CNTV_TVAL | CNTV_CVAL | CNTV_TVAL Error --------------------+------------+--------------------+----------------- 0x000001ac3effffff | 0x1110100f | 0x000001ac4f10100f | +0x1000000 0x000001ac40000000 | 0x1010100f | 0x000001ac5110100f | -0x1000000 0x000001ac58ffffff | 0x1110100f | 0x000001ac6910100f | +0x1000000 0x000001ac66000000 | 0x1010100f | 0x000001ac7710100f | -0x1000000 0x000001ac6affffff | 0x1110100f | 0x000001ac7b10100f | +0x1000000 0x000001ac6e000000 | 0x1010100f | 0x000001ac7f10100f | -0x1000000 I was also twice able to reproduce the issue covered by Allwinner's workaround[4], that writing to TVAL sometimes fails, and both CVAL and TVAL are left with entirely bogus values. One was the following values: CNTVCT | CNTV_TVAL | CNTV_CVAL --------------------+------------+-------------------------------------- 0x000000d4a2d6014c | 0x8fbd5721 | 0x000000d132935fff (615s in the past) Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> ======================================================================== Because the CPU can read the CNTPCT/CNTVCT registers faster than they change, performing two reads of the register and comparing the high bits (like other workarounds) is not a workable solution. And because the timer can jump both forward and backward, no pair of reads can distinguish a good value from a bad one. The only way to guarantee a good value from consecutive reads would be to read _three_ times, and take the middle value only if the three values are 1) each unique and 2) increasing. This takes at minimum 3 counter cycles (125 ns), or more if an anomaly is detected. However, since there is a distinct pattern to the bad values, we can optimize the common case (1022/1024 of the time) to a single read by simply ignoring values that match the error pattern. This still takes no more than 3 cycles in the worst case, and requires much less code. As an additional safety check, we still limit the loop iteration to the number of max-frequency (1.2 GHz) CPU cycles in three 24 MHz counter periods. For the TVAL registers, the simple solution is to not use them. Instead, read or write the CVAL and calculate the TVAL value in software. Although the manufacturer is aware of at least part of the erratum[4], there is no official name for it. For now, use the kernel-internal name "UNKNOWN1". [1]: https://github.com/armbian/build/commit/a08cd6fe7ae9 [2]: https://forum.armbian.com/topic/3458-a64-datetime-clock-issue/ [3]: https://irclog.whitequark.org/linux-sunxi/2018-01-26 [4]: https://github.com/Allwinner-Homlet/H6-BSP4.9-linux/blob/master/drivers/clocksource/arm_arch_timer.c#L272 Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Samuel Holland <samuel@sholland.org> Cc: stable@vger.kernel.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-01-13 02:17:18 +00:00
| Allwinner | A64/R18 | UNKNOWN1 | SUN50I_ERRATUM_UNKNOWN1 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A53 | #824069 | ARM64_ERRATUM_824069 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A53 | #819472 | ARM64_ERRATUM_819472 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A53 | #845719 | ARM64_ERRATUM_845719 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A53 | #843419 | ARM64_ERRATUM_843419 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A57 | #852523 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| ARM | Cortex-A72 | #853709 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: cpu_errata: Add capability to advertise Cortex-A73 erratum 858921 In order to work around Cortex-A73 erratum 858921 in a subsequent patch, add the required capability that advertise the erratum. As the configuration option it depends on is not present yet, this has no immediate effect. Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-03-20 17:18:06 +00:00
| ARM | Cortex-A73 | #858921 | ARM64_ERRATUM_858921 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Add work around for Arm Cortex-A55 Erratum 1024718 Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer from an erratum 1024718, which causes incorrect updates when DBM/AP bits in a page table entry is modified without a break-before-make sequence. The work around is to skip enabling the hardware DBM feature on the affected cores. The hardware Access Flag management features is not affected. There are some other cores suffering from this errata, which could be added to the midr_list to trigger the work around. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: ckadabi@codeaurora.org Reviewed-by: Dave Martin <dave.martin@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-03-26 14:12:49 +00:00
| ARM | Cortex-A55 | #1024718 | ARM64_ERRATUM_1024718 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Handle erratum 1418040 as a superset of erratum 1188873 We already mitigate erratum 1188873 affecting Cortex-A76 and Neoverse-N1 r0p0 to r2p0. It turns out that revisions r0p0 to r3p1 of the same cores are affected by erratum 1418040, which has the same workaround as 1188873. Let's expand the range of affected revisions to match 1418040, and repaint all occurences of 1188873 to 1418040. Whilst we're there, do a bit of reformating in silicon-errata.txt and drop a now unnecessary dependency on ARM_ARCH_TIMER_OOL_WORKAROUND. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-05-23 10:24:50 +00:00
| ARM | Cortex-A76 | #1188873,1418040| ARM64_ERRATUM_1418040 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Add configuration/documentation for Cortex-A76 erratum 1165522 Now that the infrastructure to handle erratum 1165522 is in place, let's make it a selectable option and add the required documentation. Reviewed-by: James Morse <james.morse@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-12-06 17:31:26 +00:00
| ARM | Cortex-A76 | #1165522 | ARM64_ERRATUM_1165522 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Add workaround for Cortex-A76 erratum 1286807 On the affected Cortex-A76 cores (r0p0 to r3p0), if a virtual address for a cacheable mapping of a location is being accessed by a core while another core is remapping the virtual address to a new physical page using the recommended break-before-make sequence, then under very rare circumstances TLBI+DSB completes before a read using the translation being invalidated has been observed by other observers. The workaround repeats the TLBI+DSB operation and is shared with the Qualcomm Falkor erratum 1009 Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-11-19 11:27:28 +00:00
| ARM | Cortex-A76 | #1286807 | ARM64_ERRATUM_1286807 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: errata: Add workaround for Cortex-A76 erratum #1463225 Revisions of the Cortex-A76 CPU prior to r4p0 are affected by an erratum that can prevent interrupts from being taken when single-stepping. This patch implements a software workaround to prevent userspace from effectively being able to disable interrupts. Cc: <stable@vger.kernel.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-29 12:03:57 +00:00
| ARM | Cortex-A76 | #1463225 | ARM64_ERRATUM_1463225 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Handle erratum 1418040 as a superset of erratum 1188873 We already mitigate erratum 1188873 affecting Cortex-A76 and Neoverse-N1 r0p0 to r2p0. It turns out that revisions r0p0 to r3p1 of the same cores are affected by erratum 1418040, which has the same workaround as 1188873. Let's expand the range of affected revisions to match 1418040, and repaint all occurences of 1188873 to 1418040. Whilst we're there, do a bit of reformating in silicon-errata.txt and drop a now unnecessary dependency on ARM_ARCH_TIMER_OOL_WORKAROUND. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-05-23 10:24:50 +00:00
| ARM | Neoverse-N1 | #1188873,1418040| ARM64_ERRATUM_1418040 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Update silicon-errata.txt for Neoverse-N1 #1349291 Neoverse-N1 affected by #1349291 may report an Uncontained RAS Error as Unrecoverable. The kernel's architecture code already considers Unrecoverable errors as fatal as without kernel-first support no further error-handling is possible. Now that KVM attributes SError to the host/guest more precisely the host's architecture code will always handle host errors that become pending during world-switch. Errors misclassified by this errata that affected the guest will be re-injected to the guest as an implementation-defined SError, which can be uncontained. Until kernel-first support is implemented, no workaround is needed for this issue. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2019-06-18 15:17:38 +00:00
| ARM | Neoverse-N1 | #1349291 | N/A |
ARM: * support for chained PMU counters in guests * improved SError handling * handle Neoverse N1 erratum #1349291 * allow side-channel mitigation status to be migrated * standardise most AArch64 system register accesses to msr_s/mrs_s * fix host MPIDR corruption on 32bit * selftests ckleanups x86: * PMU event {white,black}listing * ability for the guest to disable host-side interrupt polling * fixes for enlightened VMCS (Hyper-V pv nested virtualization), * new hypercall to yield to IPI target * support for passing cstate MSRs through to the guest * lots of cleanups and optimizations Generic: * Some txt->rST conversions for the documentation -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAABAgAGBQJdJzdIAAoJEL/70l94x66DQDoH/i83/8kX4I8AWDlushPru4ts Q4lCE5VAPha+o4pLb1dtfFL3gTmSbsB1N++JSlqK3JOo6LphIOy6b0wBjQBbAa6U 3CT1dJaHJoScLLj09vyBlvClGUH2ZKEQTWOiquCCf7JfPofxwPUA6vJ7TYsdkckx zR3ygbADWmnfS7hFfiqN3JzuYh9eoooGNWSU+Giq6VF41SiL3IqhBGZhWS0zE9c2 2c5lpqqdeHmAYNBqsyzNiDRKp7+zLFSmZ7Z5/0L755L8KYwR6F5beTnmBMHvb4lA PWH/SWOC8EYR+PEowfrH+TxKZwp0gMn1kcAKjilHk0uCRwG1IzuHAr2jlNxICCk= =t/Oq -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "ARM: - support for chained PMU counters in guests - improved SError handling - handle Neoverse N1 erratum #1349291 - allow side-channel mitigation status to be migrated - standardise most AArch64 system register accesses to msr_s/mrs_s - fix host MPIDR corruption on 32bit - selftests ckleanups x86: - PMU event {white,black}listing - ability for the guest to disable host-side interrupt polling - fixes for enlightened VMCS (Hyper-V pv nested virtualization), - new hypercall to yield to IPI target - support for passing cstate MSRs through to the guest - lots of cleanups and optimizations Generic: - Some txt->rST conversions for the documentation" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (128 commits) Documentation: virtual: Add toctree hooks Documentation: kvm: Convert cpuid.txt to .rst Documentation: virtual: Convert paravirt_ops.txt to .rst KVM: x86: Unconditionally enable irqs in guest context KVM: x86: PMU Event Filter kvm: x86: Fix -Wmissing-prototypes warnings KVM: Properly check if "page" is valid in kvm_vcpu_unmap KVM: arm/arm64: Initialise host's MPIDRs by reading the actual register KVM: LAPIC: Retry tune per-vCPU timer_advance_ns if adaptive tuning goes insane kvm: LAPIC: write down valid APIC registers KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s KVM: doc: Add API documentation on the KVM_REG_ARM_WORKAROUNDS register KVM: arm/arm64: Add save/restore support for firmware workaround state arm64: KVM: Propagate full Spectre v2 workaround state to KVM guests KVM: arm/arm64: Support chained PMU counters KVM: arm/arm64: Remove pmc->bitmask KVM: arm/arm64: Re-create event when setting counter value KVM: arm/arm64: Extract duplicated code to own function KVM: arm/arm64: Rename kvm_pmu_{enable/disable}_counter functions KVM: LAPIC: ARBPRI is a reserved register for x2APIC ...
2019-07-12 22:35:14 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Handle erratum 1418040 as a superset of erratum 1188873 We already mitigate erratum 1188873 affecting Cortex-A76 and Neoverse-N1 r0p0 to r2p0. It turns out that revisions r0p0 to r3p1 of the same cores are affected by erratum 1418040, which has the same workaround as 1188873. Let's expand the range of affected revisions to match 1418040, and repaint all occurences of 1188873 to 1418040. Whilst we're there, do a bit of reformating in silicon-errata.txt and drop a now unnecessary dependency on ARM_ARCH_TIMER_OOL_WORKAROUND. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-05-23 10:24:50 +00:00
| ARM | MMU-500 | #841119,826419 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
arm64: Handle erratum 1418040 as a superset of erratum 1188873 We already mitigate erratum 1188873 affecting Cortex-A76 and Neoverse-N1 r0p0 to r2p0. It turns out that revisions r0p0 to r3p1 of the same cores are affected by erratum 1418040, which has the same workaround as 1188873. Let's expand the range of affected revisions to match 1418040, and repaint all occurences of 1188873 to 1418040. Whilst we're there, do a bit of reformating in silicon-errata.txt and drop a now unnecessary dependency on ARM_ARCH_TIMER_OOL_WORKAROUND. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-05-23 10:24:50 +00:00
| Cavium | ThunderX ITS | #22375,24313 | CAVIUM_ERRATUM_22375 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Cavium | ThunderX ITS | #23144 | CAVIUM_ERRATUM_23144 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Cavium | ThunderX GICv3 | #23154 | CAVIUM_ERRATUM_23154 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: Add workaround for Cavium Thunder erratum 30115 Some Cavium Thunder CPUs suffer a problem where a KVM guest may inadvertently cause the host kernel to quit receiving interrupts. Use the Group-0/1 trapping in order to deal with it. [maz]: Adapted patch to the Group-0/1 trapping, reworked commit log Tested-by: Alexander Graf <agraf@suse.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-06-09 11:49:48 +00:00
| Cavium | ThunderX Core | #30115 | CAVIUM_ERRATUM_30115 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Cavium | ThunderX SMMUv2 | #27704 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
+----------------+-----------------+-----------------+-----------------------------+
iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74 Cavium ThunderX2 SMMU implementation doesn't support page 1 register space and PAGE0_REGS_ONLY option is enabled as an errata workaround. This option when turned on, replaces all page 1 offsets used for EVTQ_PROD/CONS, PRIQ_PROD/CONS register access with page 0 offsets. SMMU resource size checks are now based on SMMU option PAGE0_REGS_ONLY, since resource size can be either 64k/128k. For this, arm_smmu_device_dt_probe/acpi_probe has been moved before platform_get_resource call, so that SMMU options are set beforehand. Signed-off-by: Linu Cherian <linu.cherian@cavium.com> Signed-off-by: Geetha Sowjanya <geethasowjanya.akula@cavium.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-22 12:05:37 +00:00
| Cavium | ThunderX2 SMMUv3| #74 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126 Cavium ThunderX2 SMMU doesn't support MSI and also doesn't have unique irq lines for gerror, eventq and cmdq-sync. New named irq "combined" is set as a errata workaround, which allows to share the irq line by register single irq handler for all the interrupts. Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Geetha sowjanya <gakula@caviumnetworks.com> [will: reworked irq equality checking and added SPI check] Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-06-23 13:34:36 +00:00
| Cavium | ThunderX2 SMMUv3| #126 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Freescale/NXP | LS2080A/LS1043A | A-008585 | FSL_ERRATUM_A008585 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Hisilicon | Hip0{5,6,7} | #161010101 | HISILICON_ERRATUM_161010101 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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iommu/arm-smmu-v3: Enable ACPI based HiSilicon CMD_PREFETCH quirk(erratum 161010701) HiSilicon SMMUv3 on Hip06/Hip07 platforms doesn't support CMD_PREFETCH command. The dt based support for this quirk is already present in the driver(hisilicon,broken-prefetch-cmd). This adds ACPI support for the quirk using the IORT smmu model number. Signed-off-by: shameer <shameerali.kolothum.thodi@huawei.com> Signed-off-by: hanjun <guohanjun@huawei.com> [will: rewrote patch] Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-05-17 09:12:05 +00:00
| Hisilicon | Hip0{6,7} | #161010701 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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irqchip/gic-v3-its: Workaround HiSilicon Hip07 redistributor addressing The ITSes on the Hip07 (as present in the Huawei D05) are broken when it comes to addressing the redistributors, and need to be explicitely told to address the VLPI page instead of the redistributor base address. So let's add yet another quirk, fixing up the target address in the command stream. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-07-28 20:20:37 +00:00
| Hisilicon | Hip07 | #161600802 | HISILICON_ERRATUM_161600802 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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perf/smmuv3: Enable HiSilicon Erratum 162001800 quirk HiSilicon erratum 162001800 describes the limitation of SMMUv3 PMCG implementation on HiSilicon Hip08 platforms. On these platforms, the PMCG event counter registers (SMMU_PMCG_EVCNTRn) are read only and as a result it is not possible to set the initial counter period value on event monitor start. To work around this, the current value of the counter is read and used for delta calculations. OEM information from ACPI header is used to identify the affected hardware platforms. Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> [will: update silicon-errata.txt and add reason string to acpi match] Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-03-26 15:17:53 +00:00
| Hisilicon | Hip08 SMMU PMCG | #162001800 | N/A |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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arm64: cpu_errata: Add Kryo to Falkor 1003 errata The Kryo CPUs are also affected by the Falkor 1003 errata, so we need to do the same workaround on Kryo CPUs. The MIDR is slightly more complicated here, where the PART number is not always the same when looking at all the bits from 15 to 4. Drop the lower 8 bits and just look at the top 4 to see if it's '2' and then consider those as Kryo CPUs. This covers all the combinations without having to list them all out. Fixes: 38fd94b0275c ("arm64: Work around Falkor erratum 1003") Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-12-13 22:19:37 +00:00
| Qualcomm Tech. | Kryo/Falkor v1 | E1003 | QCOM_FALKOR_ERRATUM_1003 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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arm64: arch_timer: document Hisilicon erratum 161010101 Now that we have a workaround for Hisilicon erratum 161010101, notes this in the arm64 silicon-errata document. The new config option is too long to fit in the existing kconfig column, so this is widened to accomodate it. At the same time, an existing whitespace error is corrected, and the existing pattern of a line space between vendors is enforced for recent additions. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> [Mark: split patch, reword commit message, rework table] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-02-09 17:00:34 +00:00
| Qualcomm Tech. | Falkor v1 | E1009 | QCOM_FALKOR_ERRATUM_1009 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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irqchip/gicv3-its: Add workaround for QDF2400 ITS erratum 0065 On Qualcomm Datacenter Technologies QDF2400 SoCs, the ITS hardware implementation uses 16Bytes for Interrupt Translation Entry (ITE), but reports an incorrect value of 8Bytes in GITS_TYPER.ITTE_size. It might cause kernel memory corruption depending on the number of MSI(x) that are configured and the amount of memory that has been allocated for ITEs in its_create_device(). This patch fixes the potential memory corruption by setting the correct ITE size to 16Bytes. Cc: stable@vger.kernel.org Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-03-07 14:20:38 +00:00
| Qualcomm Tech. | QDF2400 ITS | E0065 | QCOM_QDF2400_ERRATUM_0065 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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arm64: Add software workaround for Falkor erratum 1041 The ARM architecture defines the memory locations that are permitted to be accessed as the result of a speculative instruction fetch from an exception level for which all stages of translation are disabled. Specifically, the core is permitted to speculatively fetch from the 4KB region containing the current program counter 4K and next 4K. When translation is changed from enabled to disabled for the running exception level (SCTLR_ELn[M] changed from a value of 1 to 0), the Falkor core may errantly speculatively access memory locations outside of the 4KB region permitted by the architecture. The errant memory access may lead to one of the following unexpected behaviors. 1) A System Error Interrupt (SEI) being raised by the Falkor core due to the errant memory access attempting to access a region of memory that is protected by a slave-side memory protection unit. 2) Unpredictable device behavior due to a speculative read from device memory. This behavior may only occur if the instruction cache is disabled prior to or coincident with translation being changed from enabled to disabled. The conditions leading to this erratum will not occur when either of the following occur: 1) A higher exception level disables translation of a lower exception level (e.g. EL2 changing SCTLR_EL1[M] from a value of 1 to 0). 2) An exception level disabling its stage-1 translation if its stage-2 translation is enabled (e.g. EL1 changing SCTLR_EL1[M] from a value of 1 to 0 when HCR_EL2[VM] has a value of 1). To avoid the errant behavior, software must execute an ISB immediately prior to executing the MSR that will change SCTLR_ELn[M] from 1 to 0. Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-12-11 22:42:32 +00:00
| Qualcomm Tech. | Falkor v{1,2} | E1041 | QCOM_FALKOR_ERRATUM_1041 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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arm64: Add workaround for Fujitsu A64FX erratum 010001 On the Fujitsu-A64FX cores ver(1.0, 1.1), memory access may cause an undefined fault (Data abort, DFSC=0b111111). This fault occurs under a specific hardware condition when a load/store instruction performs an address translation. Any load/store instruction, except non-fault access including Armv8 and SVE might cause this undefined fault. The TCR_ELx.NFD1 bit is used by the kernel when CONFIG_RANDOMIZE_BASE is enabled to mitigate timing attacks against KASLR where the kernel address space could be probed using the FFR and suppressed fault on SVE loads. Since this erratum causes spurious exceptions, which may corrupt the exception registers, we clear the TCR_ELx.NFDx=1 bits when booting on an affected CPU. Signed-off-by: Zhang Lei <zhang.lei@jp.fujitsu.com> [Generated MIDR value/mask for __cpu_setup(), removed spurious-fault handler and always disabled the NFDx bits on affected CPUs] Signed-off-by: James Morse <james.morse@arm.com> Tested-by: zhang.lei <zhang.lei@jp.fujitsu.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-02-26 18:43:41 +00:00
| Fujitsu | A64FX | E#010001 | FUJITSU_ERRATUM_010001 |
docs: arm64: convert docs to ReST and rename to .rst The documentation is in a format that is very close to ReST format. The conversion is actually: - add blank lines in order to identify paragraphs; - fixing tables markups; - adding some lists markups; - marking literal blocks; - adjust some title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-12 17:52:38 +00:00
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