iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/drivers/cpufreq
History
Srinivas Pandruvada 1e24c31351 cpufreq: intel_pstate: Fix unchecked HWP MSR access 
Fix unchecked MSR access error for processors with no HWP support. On
such processors, maximum frequency can be changed by the system firmware
using ACPI event ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED. This results
in accessing HWP MSR 0x771.

Call Trace:
	<TASK>
	generic_exec_single+0x58/0x120
	smp_call_function_single+0xbf/0x110
	rdmsrl_on_cpu+0x46/0x60
	intel_pstate_get_hwp_cap+0x1b/0x70
	intel_pstate_update_limits+0x2a/0x60
	acpi_processor_notify+0xb7/0x140
	acpi_ev_notify_dispatch+0x3b/0x60

HWP MSR 0x771 can be only read on a CPU which supports HWP and enabled.
Hence intel_pstate_get_hwp_cap() can only be called when hwp_active is
true.

Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Closes: https://lore.kernel.org/linux-pm/20240529155740.Hq2Hw7be@linutronix.de/
Fixes: e8217b4bece3 ("cpufreq: intel_pstate: Update the maximum CPU frequency consistently")
Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-06-03 18:00:23 +02:00
..
acpi-cpufreq.c
cpufreq: acpi: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
amd_freq_sensitivity.c
cpufreq: amd_freq_sensitivity: Add missing pci_dev_put()
2022-11-30 19:50:04 +01:00
amd-pstate-trace.c
cpufreq: amd-pstate: Add trace for AMD P-State module
2021-12-30 18:51:39 +01:00
amd-pstate-trace.h
cpufreq: amd-pstate: Add more tracepoint for AMD P-State module
2022-03-09 19:53:01 +01:00
amd-pstate-ut.c
cpufreq: amd-pstate: remove global header file
2024-05-28 21:59:39 +02:00
amd-pstate.c
cpufreq: amd-pstate: Fix the inconsistency in max frequency units
2024-05-28 22:03:11 +02:00
amd-pstate.h
cpufreq: amd-pstate: remove global header file
2024-05-28 21:59:39 +02:00
apple-soc-cpufreq.c
cpufreq: apple-soc: Fix an IS_ERR() vs NULL check
2023-03-01 19:34:54 +01:00
armada-8k-cpufreq.c
cpufreq: armada-8k: Fix parameter type warning
2023-12-18 11:22:57 +05:30
armada-37xx-cpufreq.c
cpufreq: Explicitly include correct DT includes
2023-07-20 16:01:57 +05:30
bmips-cpufreq.c
cpufreq: bmips-cpufreq: Use module_init and add module_exit
2022-08-30 13:49:23 +05:30
brcmstb-avs-cpufreq.c
cpufreq: brcmstb-avs-cpufreq: ISO C90 forbids mixed declarations
2024-04-25 10:36:40 +05:30
cppc_cpufreq.c
cppc_cpufreq: Fix possible null pointer dereference
2024-04-19 11:59:16 +05:30
cpufreq_conservative.c
cpufreq: conservative: Simplify the condition of storing 'down_threshold'
2023-10-06 21:55:13 +02:00
cpufreq_governor_attr_set.c
cpufreq: Move to_gov_attr_set() to cpufreq.h
2022-02-04 19:22:34 +01:00
cpufreq_governor.c
cpufreq: governor: Free dbs_data directly when gov->init() fails
2023-08-29 20:21:35 +02:00
cpufreq_governor.h
cpufreq: governor: Use kobject release() method to free dbs_data
2022-04-13 15:22:41 +02:00
cpufreq_ondemand.c
cpufreq: Remove references to 10ms min sampling rate
2024-02-24 15:02:33 +01:00
cpufreq_ondemand.h
…
cpufreq_performance.c
cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
2020-11-10 18:31:17 +01:00
cpufreq_powersave.c
cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
2020-11-10 18:31:17 +01:00
cpufreq_stats.c
cpufreq: stats: Fix buffer overflow detection in trans_stats()
2023-10-24 22:02:06 +02:00
cpufreq_userspace.c
cpufreq: userspace: Move is_managed indicator into per-policy structure
2023-10-06 22:01:26 +02:00
cpufreq-dt-platdev.c
cpufreq: dt-platdev: eliminate uses of of_node_put()
2024-04-23 14:59:56 +05:30
cpufreq-dt.c
cpufreq: dt: eliminate uses of of_node_put()
2024-04-23 14:59:56 +05:30
cpufreq-dt.h
cpufreq: dt: Allow platform specific intermediate callbacks
2020-03-12 15:43:52 +05:30
cpufreq-nforce2.c
…
cpufreq.c
Power management updates for 6.10-rc1
2024-05-14 13:19:15 -07:00
davinci-cpufreq.c
cpufreq: davinci: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
e_powersaver.c
cpufreq: e_powersaver: remove unreachable break
2020-10-27 18:42:54 +01:00
elanfreq.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
freq_table.c
cpufreq: Fix up printing large CPU numbers and frequency values
2024-04-30 12:55:01 +02:00
gx-suspmod.c
…
highbank-cpufreq.c
cpufreq: Add __init annotation to module init funcs
2022-09-26 11:15:04 +05:30
imx6q-cpufreq.c
cpufreq: imx6: use regmap to read ocotp register
2024-01-23 11:36:21 +05:30
imx-cpufreq-dt.c
cpufreq: imx-cpufreq-dt: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
intel_pstate.c
cpufreq: intel_pstate: Fix unchecked HWP MSR access
2024-06-03 18:00:23 +02:00
Kconfig
cpufreq: Move CPPC configs to common Kconfig and add RISC-V
2024-03-19 18:30:55 -07:00
Kconfig.arm
RISC-V Patches for the 6.9 Merge Window
2024-03-22 10:41:13 -07:00
Kconfig.powerpc
…
Kconfig.x86
cpufreq: amd-pstate: Add a kernel config option to set default mode
2023-06-21 18:44:56 +02:00
kirkwood-cpufreq.c
cpufreq: kirkwood: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
longhaul.c
cpufreq: longhaul: Make array speeds static const
2022-11-03 19:13:34 +01:00
longhaul.h
…
longrun.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
loongson2_cpufreq.c
cpufreq: loongson2: Remove unused linux/sched.h headers
2021-06-07 17:43:52 +02:00
Makefile
arch: Remove Itanium (IA-64) architecture
2023-09-11 08:13:17 +00:00
maple-cpufreq.c
cpufreq: Adjust includes to remove of_device.h
2023-04-13 17:46:35 -05:00
mediatek-cpufreq-hw.c
cpufreq: mediatek-hw: Don't error out if supply is not found
2024-01-29 10:34:17 +05:30
mediatek-cpufreq.c
cpufreq: mediatek: Add support for MT7988A
2024-04-23 11:43:39 +05:30
mvebu-cpufreq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2)
2022-06-10 14:51:35 +02:00
omap-cpufreq.c
cpufreq: omap: Convert to platform remove callback returning void
2023-07-20 16:02:14 +05:30
p4-clockmod.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
pasemi-cpufreq.c
cpufreq: Prepare cleanup of powerpc's asm/prom.h
2022-04-13 17:18:45 +02:00
pcc-cpufreq.c
cpufreq: pcc: Fix the potentinal scheduling delays in target_index()
2023-08-29 20:41:29 +02:00
pmac32-cpufreq.c
powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX
2024-05-08 00:25:00 +10:00
pmac64-cpufreq.c
cpufreq: Adjust includes to remove of_device.h
2023-04-13 17:46:35 -05:00
powernow-k6.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
powernow-k7.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
powernow-k7.h
…
powernow-k8.c
cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit()
2023-08-28 12:27:30 +05:30
powernow-k8.h
…
powernv-cpufreq.c
cpufreq: Introducing CPUFREQ_RELATION_E
2021-10-05 16:33:05 +02:00
ppc_cbe_cpufreq_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Explicitly include correct DT includes
2023-07-20 16:01:57 +05:30
ppc_cbe_cpufreq.c
cpufreq: Explicitly include correct DT includes
2023-07-20 16:01:57 +05:30
ppc_cbe_cpufreq.h
…
pxa2xx-cpufreq.c
cpufreq: pxa3: move clk register access to clk driver
2022-05-07 22:55:49 +02:00
pxa3xx-cpufreq.c
cpufreq: pxa3: move clk register access to clk driver
2022-05-07 22:55:49 +02:00
qcom-cpufreq-hw.c
sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
2024-04-24 12:08:01 +02:00
qcom-cpufreq-nvmem.c
cpufreq: qcom-nvmem: Preserve PM domain votes in system suspend
2023-11-23 13:08:01 +05:30
qoriq-cpufreq.c
cpufreq: qoriq: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
raspberrypi-cpufreq.c
cpufreq: raspberrypi: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
s3c64xx-cpufreq.c
…
s5pv210-cpufreq.c
cpufreq: Introducing CPUFREQ_RELATION_E
2021-10-05 16:33:05 +02:00
sa1110-cpufreq.c
ARM: sa1100: remove unused board files
2023-01-12 10:53:12 +01:00
sc520_freq.c
cpufreq: sc520_freq: add 'fallthrough' to one case
2021-05-21 18:52:13 +02:00
scmi-cpufreq.c
cpufreq: scmi: Enable boost support
2024-03-15 11:19:27 +05:30
scpi-cpufreq.c
cpufreq: scpi: Convert to platform remove callback returning void
2023-07-20 16:02:12 +05:30
sh-cpufreq.c
cpufreq: sh: Remove sh_cpufreq_cpu_ready()
2021-09-02 18:04:17 +02:00
sparc-us2e-cpufreq.c
cpufreq: sparc: Don't mark cpufreq callbacks with __init
2023-07-12 12:45:18 +02:00
sparc-us3-cpufreq.c
cpufreq: sparc: Don't mark cpufreq callbacks with __init
2023-07-12 12:45:18 +02:00
spear-cpufreq.c
cpufreq: Adjust includes to remove of_device.h
2023-04-13 17:46:35 -05:00
speedstep-centrino.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
speedstep-ich.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
speedstep-lib.c
cpufreq: speedstep: remove unneeded semicolon
2020-10-28 18:04:07 +01:00
speedstep-lib.h
…
speedstep-smi.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
sti-cpufreq.c
cpufreq: Explicitly include correct DT includes
2023-07-20 16:01:57 +05:30
sun50i-cpufreq-nvmem.c
cpufreq: sun50i: fix error returns in dt_has_supported_hw()
2024-04-25 10:38:06 +05:30
tegra20-cpufreq.c
Devicetree updates for v6.4, part 2:
2023-04-27 10:09:05 -07:00
tegra124-cpufreq.c
cpupfreq: tegra124: eliminate uses of of_node_put()
2024-04-19 11:55:44 +05:30
tegra186-cpufreq.c
cpufreq: tegra186: Convert to platform remove callback returning void
2023-07-20 16:02:13 +05:30
tegra194-cpufreq.c
cpufreq: tegra194: remove redundant AND with cpu_online_mask
2023-10-10 11:06:03 +05:30
ti-cpufreq.c
cpufreq: ti: Implement scope-based cleanup in ti_cpufreq_match_node()
2024-04-23 12:51:46 +05:30
vexpress-spc-cpufreq.c
cpufreq: vexpress: Convert to platform remove callback returning void
2023-07-20 16:02:12 +05:30