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milos-linux/drivers/cpufreq
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Gautham R. Shenoy fcc25a291f amd-pstate: Update cppc_req_cached in fast_switch case 
The function msr_update_perf() does not cache the new value that is
written to MSR_AMD_CPPC_REQ into the variable cpudata->cppc_req_cached
when the update is happening from the fast path.

Fix that by caching the value everytime the MSR_AMD_CPPC_REQ gets
updated.

This issue was discovered by Claude Opus 4.6 with the aid of Chris
Mason's AI review-prompts
(https://github.com/masoncl/review-prompts/tree/main/kernel).

Assisted-by: Claude:claude-opus-4.6 review-prompts/linux
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Fixes: fff3957969 ("cpufreq/amd-pstate: Always write EPP value when updating perf")
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
2026-04-02 11:28:12 -05:00
..
acpi-cpufreq.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
airoha-cpufreq.c
amd-pstate-trace.c
amd-pstate-trace.h
amd-pstate-ut.c
amd-pstate.c amd-pstate: Update cppc_req_cached in fast_switch case 2026-04-02 11:28:12 -05:00
amd-pstate.h
amd_freq_sensitivity.c
apple-soc-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
armada-8k-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
armada-37xx-cpufreq.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
bmips-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
brcmstb-avs-cpufreq.c
cppc_cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpufreq-dt-platdev.c CPUFreq arm updates for 7.0 2026-01-27 14:46:28 +01:00
cpufreq-dt.c cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency 2025-10-01 13:56:24 +02:00
cpufreq-dt.h
cpufreq-nforce2.c cpufreq: nforce2: fix reference count leak in nforce2 2025-10-28 10:28:13 +05:30
cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpufreq_conservative.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpufreq_governor.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpufreq_governor.h
cpufreq_governor_attr_set.c
cpufreq_ondemand.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpufreq_ondemand.h
cpufreq_performance.c
cpufreq_powersave.c
cpufreq_stats.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpufreq_userspace.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
davinci-cpufreq.c
e_powersaver.c Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
elanfreq.c
freq_table.c
gx-suspmod.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
highbank-cpufreq.c
imx-cpufreq-dt.c
imx6q-cpufreq.c cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency 2025-10-01 13:56:24 +02:00
intel_pstate.c cpufreq: intel_pstate: Fix crash during turbo disable 2026-02-25 14:39:19 +01:00
Kconfig
Kconfig.arm cpufreq: omap: remove driver 2026-01-08 21:26:34 +01:00
Kconfig.powerpc
Kconfig.x86
kirkwood-cpufreq.c
longhaul.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
longhaul.h
longrun.c
loongson2_cpufreq.c
loongson3_cpufreq.c
Makefile cpufreq: omap: remove driver 2026-01-08 21:26:34 +01:00
mediatek-cpufreq-hw.c cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency 2025-10-01 13:56:24 +02:00
mediatek-cpufreq.c cpufreq: mediatek: Simplify with of_machine_get_match_data() 2025-11-26 19:42:21 -06:00
mvebu-cpufreq.c
p4-clockmod.c
pasemi-cpufreq.c
pcc-cpufreq.c
pmac32-cpufreq.c
pmac64-cpufreq.c
powernow-k6.c
powernow-k7.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
powernow-k7.h
powernow-k8.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
powernow-k8.h
powernv-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
powernv-trace.h
pxa2xx-cpufreq.c
pxa3xx-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
qcom-cpufreq-hw.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
qcom-cpufreq-nvmem.c cpufreq: qcom-nvmem: add sentinel to qcom_cpufreq_ipq806x_match_list 2026-01-27 11:21:22 +05:30
qoriq-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
raspberrypi-cpufreq.c
rcpufreq_dt.rs rust: cpufreq: replace kernel::c_str! with C-Strings 2026-01-27 11:21:22 +05:30
s3c64xx-cpufreq.c
s5pv210-cpufreq.c cpufreq: s5pv210: Simplify with scoped for each OF child loop 2026-02-03 20:58:13 -06:00
sa1110-cpufreq.c
sc520_freq.c
scmi-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
scpi-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
sh-cpufreq.c
sparc-us2e-cpufreq.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
sparc-us3-cpufreq.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
spear-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
speedstep-centrino.c
speedstep-ich.c
speedstep-lib.c
speedstep-lib.h
speedstep-smi.c
sti-cpufreq.c
sun50i-cpufreq-nvmem.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tegra20-cpufreq.c
tegra124-cpufreq.c
tegra186-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tegra194-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ti-cpufreq.c cpufreq: ti-cpufreq: add support for AM62L3 SoC 2026-01-27 11:21:23 +05:30
vexpress-spc-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
virtual-cpufreq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00