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linux/drivers/watchdog
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Ard Biesheuvel cf8e865810 arch: Remove Itanium (IA-64) architecture 
The Itanium architecture is obsolete, and an informal survey [0] reveals
that any residual use of Itanium hardware in production is mostly HP-UX
or OpenVMS based. The use of Linux on Itanium appears to be limited to
enthusiasts that occasionally boot a fresh Linux kernel to see whether
things are still working as intended, and perhaps to churn out some
distro packages that are rarely used in practice.

None of the original companies behind Itanium still produce or support
any hardware or software for the architecture, and it is listed as
'Orphaned' in the MAINTAINERS file, as apparently, none of the engineers
that contributed on behalf of those companies (nor anyone else, for that
matter) have been willing to support or maintain the architecture
upstream or even be responsible for applying the odd fix. The Intel
firmware team removed all IA-64 support from the Tianocore/EDK2
reference implementation of EFI in 2018. (Itanium is the original
architecture for which EFI was developed, and the way Linux supports it
deviates significantly from other architectures.) Some distros, such as
Debian and Gentoo, still maintain [unofficial] ia64 ports, but many have
dropped support years ago.

While the argument is being made [1] that there is a 'for the common
good' angle to being able to build and run existing projects such as the
Grid Community Toolkit [2] on Itanium for interoperability testing, the
fact remains that none of those projects are known to be deployed on
Linux/ia64, and very few people actually have access to such a system in
the first place. Even if there were ways imaginable in which Linux/ia64
could be put to good use today, what matters is whether anyone is
actually doing that, and this does not appear to be the case.

There are no emulators widely available, and so boot testing Itanium is
generally infeasible for ordinary contributors. GCC still supports IA-64
but its compile farm [3] no longer has any IA-64 machines. GLIBC would
like to get rid of IA-64 [4] too because it would permit some overdue
code cleanups. In summary, the benefits to the ecosystem of having IA-64
be part of it are mostly theoretical, whereas the maintenance overhead
of keeping it supported is real.

So let's rip off the band aid, and remove the IA-64 arch code entirely.
This follows the timeline proposed by the Debian/ia64 maintainer [5],
which removes support in a controlled manner, leaving IA-64 in a known
good state in the most recent LTS release. Other projects will follow
once the kernel support is removed.

[0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/
[1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/
[2] https://gridcf.org/gct-docs/latest/index.html
[3] https://cfarm.tetaneutral.net/machines/list/
[4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/
[5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/

Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-09-11 08:13:17 +00:00
..
acquirewdt.c watchdog: acquirewdt: Convert to platform remove callback returning void 2023-04-22 12:53:40 +02:00
advantech_ec_wdt.c watchdog: Add Advantech EC watchdog driver 2022-11-19 15:30:37 +01:00
advantechwdt.c watchdog: advantechwdt: Convert to platform remove callback returning void 2023-04-22 12:53:40 +02:00
alim1535_wdt.c
alim7101_wdt.c
apple_wdt.c watchdog: apple: Use devm_clk_get_enabled() helper 2023-02-12 15:32:53 +01:00
ar7_wdt.c watchdog: ar7: Convert to platform remove callback returning void 2023-04-22 12:53:41 +02:00
arm_smc_wdt.c
armada_37xx_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
asm9260_wdt.c
aspeed_wdt.c watchdog: aspeed: Drop of_match_ptr for ID table 2023-04-22 12:53:59 +02:00
at91rm9200_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
at91sam9_wdt.c watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free_irq() in error path 2023-02-18 15:11:35 +01:00
at91sam9_wdt.h
ath79_wdt.c watchdog: ath79: Convert to platform remove callback returning void 2023-04-22 12:53:42 +02:00
bcm47xx_wdt.c watchdog: bcm47xx: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:54 +02:00
bcm2835_wdt.c watchdog: bcm2835: Convert to platform remove callback returning void 2023-04-22 12:53:42 +02:00
bcm7038_wdt.c watchdog: bcm7038: Use devm_clk_get_enabled() helper 2023-02-12 15:32:51 +01:00
bcm_kona_wdt.c watchdog: bcm_kona: Convert to platform remove callback returning void 2023-04-22 12:53:43 +02:00
bd9576_wdt.c watchdog: bd9576_wdt: switch to using devm_fwnode_gpiod_get() 2022-10-02 12:55:30 +02:00
booke_wdt.c watchdog: booke_wdt: Replace PPC_FSL_BOOK3E by PPC_E500 2022-09-26 23:00:13 +10:00
cadence_wdt.c watchdog: cadence: Use devm_clk_get_enabled() helper 2023-02-12 15:32:49 +01:00
cpu5wdt.c module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
cpwd.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
da9052_wdt.c
da9055_wdt.c
da9062_wdt.c watchdog: da9062: da9063: use unlocked xfer function in restart 2023-02-18 15:11:30 +01:00
da9063_wdt.c watchdog: da9062: da9063: use unlocked xfer function in restart 2023-02-18 15:11:30 +01:00
davinci_wdt.c watchdog: davinci: Use devm_clk_get_enabled() helper 2023-02-12 15:32:50 +01:00
db8500_wdt.c watchdog: at91rm9200: Remove #ifdef guards for PM related functions 2022-11-19 15:30:38 +01:00
diag288_wdt.c watchdog: diag288_wdt: unify lpar and zvm diag288 helpers 2023-02-06 15:14:10 +01:00
digicolor_wdt.c
dw_wdt.c watchdog: dw_wdt: Simplify clk management 2023-04-29 08:08:41 +02:00
ebc-c384_wdt.c
ep93xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
eurotechwdt.c watchdog: eurotechwdt: Remove redundant word in comments 2022-10-02 12:55:38 +02:00
exar_wdt.c drivers: watchdog: exar_wdt.c fix use after free 2022-10-19 19:49:47 +02:00
f71808e_wdt.c watchdog: f71808e_wdt: Add check for platform_driver_register 2022-07-23 14:18:46 +02:00
ftwdt010_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
gef_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
geodewdt.c watchdog: geodewdt: Convert to platform remove callback returning void 2023-04-22 12:53:44 +02:00
gpio_wdt.c
gxp-wdt.c watchdog: gxp: Add missing MODULE_LICENSE 2022-06-09 12:20:34 +02:00
hpwdt.c watchdog/hpwdt: Include nmi.h only if CONFIG_HPWDT_NMI_DECODING 2022-10-02 12:55:32 +02:00
i6300esb.c
ib700wdt.c watchdog: ib700wdt: Convert to platform remove callback returning void 2023-04-22 12:53:45 +02:00
ibmasr.c watchdog: ibmasr: Replace GPL license notice with SPDX identifier 2023-06-26 14:30:05 +02:00
ie6xx_wdt.c watchdog: ie6xx: Convert to platform remove callback returning void 2023-04-22 12:53:46 +02:00
imgpdc_wdt.c watchdog: imgpdc: Use devm_clk_get_enabled() helper 2023-02-12 15:32:48 +01:00
imx2_wdt.c watchdog: imx2_wdt: Improve dev_crit() message 2023-08-25 16:19:13 +02:00
imx7ulp_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
imx_sc_wdt.c watchdog: imx_sc_wdt: fix pretimeout 2021-06-21 08:49:14 +02:00
indydog.c
intel-mid_wdt.c watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load 2023-08-19 17:36:19 +02:00
it87_wdt.c watchdog: it87_wdt: remove useless function 2021-06-21 08:49:04 +02:00
it8712f_wdt.c
iTCO_vendor_support.c
iTCO_vendor.h
iTCO_wdt.c watchdog: iTCO_wdt: Report firmware_version 2023-02-18 15:11:31 +01:00
ixp4xx_wdt.c watchdog: ixp4xx: Use devm_clk_get_enabled() helper 2023-04-22 12:53:56 +02:00
jz4740_wdt.c watchdog: jz4740: Fix return value check in jz4740_wdt_probe() 2021-06-21 08:49:11 +02:00
Kconfig arch: Remove Itanium (IA-64) architecture 2023-09-11 08:13:17 +00:00
keembay_wdt.c watchdog: keembay: Typo corrections and other blank operations 2021-06-21 08:48:57 +02:00
kempld_wdt.c watchdog: kempld: Remove #ifdef guards for PM related functions 2022-11-19 15:30:39 +01:00
lantiq_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
loongson1_wdt.c watchdog: Enable COMPILE_TEST for more drivers 2023-08-13 14:29:51 +02:00
lpc18xx_wdt.c watchdog: lpc18xx: Convert to platform remove callback returning void 2023-04-22 12:53:46 +02:00
m54xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
machzwd.c watchdog: Fix fall-through warnings for Clang 2021-05-17 18:56:23 -05:00
Makefile Watchdog: Add marvell GTI watchdog driver 2023-08-13 14:29:49 +02:00
marvell_gti_wdt.c Watchdog: Add marvell GTI watchdog driver 2023-08-13 14:29:49 +02:00
max63xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
max77620_wdt.c watchdog: max77620: update Luca Ceresoli's e-mail address 2022-07-23 14:21:23 +02:00
mei_wdt.c mei: fix kdoc in the driver 2021-06-22 12:40:31 +02:00
mena21_wdt.c
menf21bmc_wdt.c
menz69_wdt.c watchdog: menz069_wdt: Remove redundant initialization owner in men_z069_driver 2023-08-13 14:29:48 +02:00
meson_gxbb_wdt.c watchdog: Add support for Amlogic-T7 SoCs 2023-08-25 16:19:15 +02:00
meson_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
mixcomwd.c
mlx_wdt.c watchdog: mlx-wdt: Use regmap_write_bits() 2021-10-26 21:31:10 +02:00
moxart_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
mpc8xxx_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
msc313e_wdt.c watchdog: msc313e: Check if the WDT was running at boot 2022-01-05 10:38:51 +01:00
mt7621_wdt.c watchdog: mt7621-wdt: avoid ralink architecture dependent code 2023-03-02 06:51:29 +01:00
mtk_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
mtx-1_wdt.c watchdog: mtx-1: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
ni903x_wdt.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
nic7018_wdt.c watchdog: nic7018: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
npcm_wdt.c watchdog: npcm: Enable clock if provided 2022-10-02 12:55:41 +02:00
nv_tco.c watchdog: nv_tco: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
nv_tco.h
octeon-wdt-main.c linux-watchdog 5.14-rc1 tag 2021-07-07 12:57:46 -07:00
octeon-wdt-nmi.S watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
of_xilinx_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
omap_wdt.c watchdog: omap: Convert to platform remove callback returning void 2023-04-22 12:53:48 +02:00
omap_wdt.h
orion_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
pc87413_wdt.c watchdog:Fix typo in comment 2022-07-23 14:21:28 +02:00
pcwd_pci.c
pcwd_usb.c watchdog: pcwd_usb: Fix attempting to access uninitialized memory 2023-02-18 15:11:39 +01:00
pcwd.c
pic32-dmt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
pic32-wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
pika_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
pm8916_wdt.c watchdog: pm8916_wdt: Remove redundant of_match_ptr() 2023-08-19 17:36:18 +02:00
pnx4008_wdt.c watchdog: pnx4008: Use devm_clk_get_enabled() helper 2023-02-12 15:32:46 +01:00
pretimeout_noop.c
pretimeout_panic.c
pseries-wdt.c watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers 2022-07-20 21:57:39 +10:00
qcom-wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rave-sp-wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rc32434_wdt.c watchdog: rc32434: Convert to platform remove callback returning void 2023-04-22 12:53:48 +02:00
rdc321x_wdt.c watchdog: rdc321x: Convert to platform remove callback returning void 2023-04-22 12:53:49 +02:00
realtek_otto_wdt.c watchdog: realtek_otto: Use devm_clk_get_enabled() helper 2023-02-12 15:32:46 +01:00
renesas_wdt.c watchdog: renesas: Convert to platform remove callback returning void 2023-04-22 12:53:50 +02:00
retu_wdt.c watchdog: retu_wdt: Clean-up by using managed work init 2021-03-23 15:22:40 +01:00
riowd.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rn5t618_wdt.c watchdog: rn5t618: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:54 +02:00
rt2880_wdt.c watchdog: rt2880-wdt: prefer unsigned int over unsigned 2023-04-22 12:53:57 +02:00
rtd119x_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
rti_wdt.c watchdog:rit_wdt: Add support for WDIOF_CARDRESET 2023-08-19 17:14:36 +02:00
rza_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rzg2l_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rzn1_wdt.c watchdog: rzn1: Use devm_clk_get_enabled() helper 2023-02-12 15:32:52 +01:00
s3c2410_wdt.c watchdog: s3c2410: Fix potential deadlock on &wdt->lock 2023-08-19 17:14:37 +02:00
sa1100_wdt.c watchdog: sa1100: Convert to platform remove callback returning void 2023-04-22 12:53:51 +02:00
sama5d4_wdt.c watchdog: sama5d4: readout initial state 2023-08-19 17:36:20 +02:00
sb_wdog.c
sbc60xxwdt.c watchdog: Fix possible use-after-free in wdt_startup() 2021-06-21 08:48:59 +02:00
sbc7240_wdt.c
sbc8360.c
sbc_epx_c3.c
sbc_fitpc2_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
sbsa_gwdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
sc520_wdt.c watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() 2021-06-21 08:49:02 +02:00
sc1200wdt.c
sch311x_wdt.c watchdog: sch311x: Convert to platform remove callback returning void 2023-04-22 12:53:52 +02:00
scx200_wdt.c
shwdt.c watchdog: shwdt: Convert to platform remove callback returning void 2023-04-22 12:53:52 +02:00
simatic-ipc-wdt.c watchdog: simatic-ipc-wdt: make IO region access of one model muxed 2023-07-14 12:45:01 +02:00
sl28cpld_wdt.c watchdog: sl28cpld_wdt: Constify static struct watchdog_ops 2021-08-22 10:28:09 +02:00
smsc37b787_wdt.c
softdog.c
sp805_wdt.c watchdog: sp805_wdt: fix spelling typo in comment 2022-10-19 19:49:46 +02:00
sp5100_tco.c watchdog: sp5100_tco: support Hygon FCH/SCH (Server Controller Hub) 2023-06-26 14:30:07 +02:00
sp5100_tco.h Watchdog: sp5100_tco: Enable Family 17h+ CPUs 2022-03-27 17:04:33 +02:00
sprd_wdt.c
st_lpc_wdt.c watchdog: st_lpc: Convert to platform remove callback returning void 2023-04-22 12:53:53 +02:00
starfive-wdt.c watchdog: starfive: Remove #ifdef guards for PM related functions 2023-08-19 17:14:37 +02:00
stm32_iwdg.c watchdog: stm32: Drop unnecessary of_match_ptr() 2023-08-25 16:19:12 +02:00
stmp3xxx_rtc_wdt.c watchdog: stmp3xxx_rtc: Convert to platform remove callback returning void 2023-04-22 12:53:53 +02:00
stpmic1_wdt.c
sun4v_wdt.c
sunplus_wdt.c watchdog: Add watchdog driver for Sunplus SP7021 2022-05-08 10:34:05 +02:00
sunxi_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
tegra_wdt.c watchdog: tegra_wdt: Remove #ifdef guards for PM related functions 2022-07-23 14:21:27 +02:00
tqmx86_wdt.c watchdog: tqmx86: Constify static struct watchdog_ops 2021-08-22 10:28:10 +02:00
ts72xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
ts4800_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
twl4030_wdt.c watchdog: twl4030: Remove #ifdef guards for PM related functions 2022-11-19 15:30:38 +01:00
txx9wdt.c
uniphier_wdt.c
via_wdt.c
visconti_wdt.c watchdog: visconti: Use devm_clk_get_enabled() helper 2023-02-12 15:32:53 +01:00
w83627hf_wdt.c watchdog: w83627hf_wdt: add bootstatus support 2022-10-02 12:55:34 +02:00
w83877f_wdt.c watchdog: Fix possible use-after-free by calling del_timer_sync() 2021-06-21 08:49:03 +02:00
w83977f_wdt.c watchdog: w83977f_wdt: Fix comment typo 2022-10-02 12:55:39 +02:00
wafer5823wdt.c
watchdog_core.c watchdog: core: stop watchdog when executing poweroff command 2023-08-19 17:36:19 +02:00
watchdog_core.h watchdog: Add hrtimer-based pretimeout feature 2021-06-21 08:49:13 +02:00
watchdog_dev.c linux-watchdog 6.4-rc1 tag 2023-05-04 18:33:56 -07:00
watchdog_hrtimer_pretimeout.c watchdog: Add hrtimer-based pretimeout feature 2021-06-21 08:49:13 +02:00
watchdog_pretimeout.c watchdog: avoid usage of iterator after loop 2023-04-22 12:54:00 +02:00
watchdog_pretimeout.h
wd501p.h
wdat_wdt.c watchdog: wdat_wdt: Avoid unimplemented get_timeleft 2023-02-12 15:32:53 +01:00
wdrtas.c
wdt285.c ARM: footbridge: remove CATS 2023-01-10 23:10:27 +01:00
wdt977.c
wdt_pci.c watchdog: fix syntactic kernel-doc issues 2021-06-21 08:49:09 +02:00
wdt.c watchdog: fix syntactic kernel-doc issues 2021-06-21 08:49:09 +02:00
wm831x_wdt.c
wm8350_wdt.c watchdog: wm8350: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:55 +02:00
xen_wdt.c
xilinx_wwdt.c watchdog: xilinx_wwdt: Use div_u64() in xilinx_wwdt_start() 2023-08-19 17:36:18 +02:00
ziirave_wdt.c watchdog: ziirave_wdt: Switch i2c driver back to use .probe() 2023-06-26 14:30:05 +02:00