+++ /dev/null
-From 491688819a369a1aedb99696452e36f894a5659f Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 25 Mar 2024 18:01:58 +0100
-Subject: cpufreq: intel_pstate: Fold intel_pstate_max_within_limits() into
- caller
-
-From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
-[ Upstream commit 032c5565eb80edb6f2faeb31939540c897987119 ]
-
-Fold intel_pstate_max_within_limits() into its only caller.
-
-No functional impact.
-
-Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-Stable-dep-of: ac4e04d9e378 ("cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode")
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- drivers/cpufreq/intel_pstate.c | 13 ++++---------
- 1 file changed, 4 insertions(+), 9 deletions(-)
-
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index 15d65c1458ed1..68747781a4f5c 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -1697,14 +1697,6 @@ static void intel_pstate_set_min_pstate(struct cpudata *cpu)
- intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
- }
-
--static void intel_pstate_max_within_limits(struct cpudata *cpu)
--{
-- int pstate = max(cpu->pstate.min_pstate, cpu->max_perf_ratio);
--
-- update_turbo_state();
-- intel_pstate_set_pstate(cpu, pstate);
--}
--
- static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
- {
- cpu->pstate.min_pstate = pstate_funcs.get_min();
-@@ -2270,12 +2262,15 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
- intel_pstate_update_perf_limits(cpu, policy->min, policy->max);
-
- if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) {
-+ int pstate = max(cpu->pstate.min_pstate, cpu->max_perf_ratio);
-+
- /*
- * NOHZ_FULL CPUs need this as the governor callback may not
- * be invoked on them.
- */
- intel_pstate_clear_update_util_hook(policy->cpu);
-- intel_pstate_max_within_limits(cpu);
-+ update_turbo_state();
-+ intel_pstate_set_pstate(cpu, pstate);
- } else {
- intel_pstate_set_update_util_hook(policy->cpu);
- }
---
-2.39.5
-
+++ /dev/null
-From fed80b566af209cfd2d3445769a4075611c9c582 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Thu, 7 Sep 2023 11:02:07 -0700
-Subject: cpufreq: intel_pstate: Revise global turbo disable check
-
-From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-
-[ Upstream commit 37b6ddba967c601479bea418a7ac6ff16b6232b7 ]
-
-Setting global turbo flag based on CPU 0 P-state limits is problematic
-as it limits max P-state request on every CPU on the system just based
-on its P-state limits.
-
-There are two cases in which global.turbo_disabled flag is set:
-- When the MSR_IA32_MISC_ENABLE_TURBO_DISABLE bit is set to 1
-in the MSR MSR_IA32_MISC_ENABLE. This bit can be only changed by
-the system BIOS before power up.
-- When the max non turbo P-state is same as max turbo P-state for CPU 0.
-
-The second check is not a valid to decide global turbo state based on
-the CPU 0. CPU 0 max turbo P-state can be same as max non turbo P-state,
-but for other CPUs this may not be true.
-
-There is no guarantee that max P-state limits are same for every CPU. This
-is possible that during fusing max P-state for a CPU is constrained. Also
-with the Intel Speed Select performance profile, CPU 0 may not be present
-in all profiles. In this case the max non turbo and turbo P-state can be
-set to the lowest possible P-state by the hardware when switched to
-such profile. Since max non turbo and turbo P-state is same,
-global.turbo_disabled flag will be set.
-
-Once global.turbo_disabled is set, any scaling max and min frequency
-update for any CPU will result in its max P-state constrained to the max
-non turbo P-state.
-
-Hence remove the check of max non turbo P-state equal to max turbo P-state
-of CPU 0 to set global turbo disabled flag.
-
-Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-[ rjw: Subject edit ]
-Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-Stable-dep-of: ac4e04d9e378 ("cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode")
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- drivers/cpufreq/intel_pstate.c | 6 +-----
- 1 file changed, 1 insertion(+), 5 deletions(-)
-
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index 4359ed1d3b7e9..15d65c1458ed1 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -488,13 +488,9 @@ static int intel_pstate_get_cppc_guranteed(int cpu)
- static inline void update_turbo_state(void)
- {
- u64 misc_en;
-- struct cpudata *cpu;
-
-- cpu = all_cpu_data[0];
- rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
-- global.turbo_disabled =
-- (misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ||
-- cpu->pstate.max_pstate == cpu->pstate.turbo_pstate);
-+ global.turbo_disabled = misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE;
- }
-
- static int min_perf_pct_min(void)
---
-2.39.5
-
+++ /dev/null
-From 70a469d8e5b8efbb64fe41df5815428f670c97d4 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Tue, 29 Apr 2025 14:07:11 -0700
-Subject: cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode
-
-From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-
-[ Upstream commit ac4e04d9e378f5aa826c2406ad7871ae1b6a6fb9 ]
-
-When turbo mode is unavailable on a Skylake-X system, executing the
-command:
-
- # echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo
-
-results in an unchecked MSR access error:
-
- WRMSR to 0x199 (attempted to write 0x0000000100001300).
-
-This issue was reproduced on an OEM (Original Equipment Manufacturer)
-system and is not a common problem across all Skylake-X systems.
-
-This error occurs because the MSR 0x199 Turbo Engage Bit (bit 32) is set
-when turbo mode is disabled. The issue arises when intel_pstate fails to
-detect that turbo mode is disabled. Here intel_pstate relies on
-MSR_IA32_MISC_ENABLE bit 38 to determine the status of turbo mode.
-However, on this system, bit 38 is not set even when turbo mode is
-disabled.
-
-According to the Intel Software Developer's Manual (SDM), the BIOS sets
-this bit during platform initialization to enable or disable
-opportunistic processor performance operations. Logically, this bit
-should be set in such cases. However, the SDM also specifies that "OS
-and applications must use CPUID leaf 06H to detect processors with
-opportunistic processor performance operations enabled."
-
-Therefore, in addition to checking MSR_IA32_MISC_ENABLE bit 38, verify
-that CPUID.06H:EAX[1] is 0 to accurately determine if turbo mode is
-disabled.
-
-Fixes: 4521e1a0ce17 ("cpufreq: intel_pstate: Reflect current no_turbo state correctly")
-Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-Cc: All applicable <stable@vger.kernel.org>
-Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- drivers/cpufreq/intel_pstate.c | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index 68747781a4f5c..c0e3488c44047 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -489,6 +489,9 @@ static inline void update_turbo_state(void)
- {
- u64 misc_en;
-
-+ if (!cpu_feature_enabled(X86_FEATURE_IDA))
-+ return true;
-+
- rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
- global.turbo_disabled = misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE;
- }
---
-2.39.5
-
usb-chipidea-ci_hdrc_imx-use-dev_err_probe.patch
usb-chipidea-ci_hdrc_imx-implement-usb_phy_init-erro.patch
serial-msm-configure-correct-working-mode-before-sta.patch
-cpufreq-intel_pstate-revise-global-turbo-disable-che.patch
-cpufreq-intel_pstate-fold-intel_pstate_max_within_li.patch
-cpufreq-intel_pstate-unchecked-msr-aceess-in-legacy-.patch
+++ /dev/null
-From 540f1c0954a14a97077fd906cfe6bf8cc0aebe64 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 25 Mar 2024 18:01:58 +0100
-Subject: cpufreq: intel_pstate: Fold intel_pstate_max_within_limits() into
- caller
-
-From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
-[ Upstream commit 032c5565eb80edb6f2faeb31939540c897987119 ]
-
-Fold intel_pstate_max_within_limits() into its only caller.
-
-No functional impact.
-
-Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-Stable-dep-of: ac4e04d9e378 ("cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode")
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- drivers/cpufreq/intel_pstate.c | 13 ++++---------
- 1 file changed, 4 insertions(+), 9 deletions(-)
-
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index 764ecccdfa8ad..28a038b2189f7 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -1537,14 +1537,6 @@ static void intel_pstate_set_min_pstate(struct cpudata *cpu)
- intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
- }
-
--static void intel_pstate_max_within_limits(struct cpudata *cpu)
--{
-- int pstate = max(cpu->pstate.min_pstate, cpu->max_perf_ratio);
--
-- update_turbo_state();
-- intel_pstate_set_pstate(cpu, pstate);
--}
--
- static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
- {
- cpu->pstate.min_pstate = pstate_funcs.get_min();
-@@ -2107,12 +2099,15 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
- intel_pstate_update_perf_limits(cpu, policy->min, policy->max);
-
- if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) {
-+ int pstate = max(cpu->pstate.min_pstate, cpu->max_perf_ratio);
-+
- /*
- * NOHZ_FULL CPUs need this as the governor callback may not
- * be invoked on them.
- */
- intel_pstate_clear_update_util_hook(policy->cpu);
-- intel_pstate_max_within_limits(cpu);
-+ update_turbo_state();
-+ intel_pstate_set_pstate(cpu, pstate);
- } else {
- intel_pstate_set_update_util_hook(policy->cpu);
- }
---
-2.39.5
-
+++ /dev/null
-From 36a552f2cc890b0b6ae0d97e1a8eb1c4a8cc1cbe Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Thu, 7 Sep 2023 11:02:07 -0700
-Subject: cpufreq: intel_pstate: Revise global turbo disable check
-
-From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-
-[ Upstream commit 37b6ddba967c601479bea418a7ac6ff16b6232b7 ]
-
-Setting global turbo flag based on CPU 0 P-state limits is problematic
-as it limits max P-state request on every CPU on the system just based
-on its P-state limits.
-
-There are two cases in which global.turbo_disabled flag is set:
-- When the MSR_IA32_MISC_ENABLE_TURBO_DISABLE bit is set to 1
-in the MSR MSR_IA32_MISC_ENABLE. This bit can be only changed by
-the system BIOS before power up.
-- When the max non turbo P-state is same as max turbo P-state for CPU 0.
-
-The second check is not a valid to decide global turbo state based on
-the CPU 0. CPU 0 max turbo P-state can be same as max non turbo P-state,
-but for other CPUs this may not be true.
-
-There is no guarantee that max P-state limits are same for every CPU. This
-is possible that during fusing max P-state for a CPU is constrained. Also
-with the Intel Speed Select performance profile, CPU 0 may not be present
-in all profiles. In this case the max non turbo and turbo P-state can be
-set to the lowest possible P-state by the hardware when switched to
-such profile. Since max non turbo and turbo P-state is same,
-global.turbo_disabled flag will be set.
-
-Once global.turbo_disabled is set, any scaling max and min frequency
-update for any CPU will result in its max P-state constrained to the max
-non turbo P-state.
-
-Hence remove the check of max non turbo P-state equal to max turbo P-state
-of CPU 0 to set global turbo disabled flag.
-
-Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-[ rjw: Subject edit ]
-Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-Stable-dep-of: ac4e04d9e378 ("cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode")
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- drivers/cpufreq/intel_pstate.c | 6 +-----
- 1 file changed, 1 insertion(+), 5 deletions(-)
-
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index 06302eaa3e942..764ecccdfa8ad 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -487,13 +487,9 @@ static int intel_pstate_get_cppc_guranteed(int cpu)
- static inline void update_turbo_state(void)
- {
- u64 misc_en;
-- struct cpudata *cpu;
-
-- cpu = all_cpu_data[0];
- rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
-- global.turbo_disabled =
-- (misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ||
-- cpu->pstate.max_pstate == cpu->pstate.turbo_pstate);
-+ global.turbo_disabled = misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE;
- }
-
- static int min_perf_pct_min(void)
---
-2.39.5
-
+++ /dev/null
-From 2a8823c91429672fd1e5242c38c8389bdeca9299 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Tue, 29 Apr 2025 14:07:11 -0700
-Subject: cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode
-
-From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-
-[ Upstream commit ac4e04d9e378f5aa826c2406ad7871ae1b6a6fb9 ]
-
-When turbo mode is unavailable on a Skylake-X system, executing the
-command:
-
- # echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo
-
-results in an unchecked MSR access error:
-
- WRMSR to 0x199 (attempted to write 0x0000000100001300).
-
-This issue was reproduced on an OEM (Original Equipment Manufacturer)
-system and is not a common problem across all Skylake-X systems.
-
-This error occurs because the MSR 0x199 Turbo Engage Bit (bit 32) is set
-when turbo mode is disabled. The issue arises when intel_pstate fails to
-detect that turbo mode is disabled. Here intel_pstate relies on
-MSR_IA32_MISC_ENABLE bit 38 to determine the status of turbo mode.
-However, on this system, bit 38 is not set even when turbo mode is
-disabled.
-
-According to the Intel Software Developer's Manual (SDM), the BIOS sets
-this bit during platform initialization to enable or disable
-opportunistic processor performance operations. Logically, this bit
-should be set in such cases. However, the SDM also specifies that "OS
-and applications must use CPUID leaf 06H to detect processors with
-opportunistic processor performance operations enabled."
-
-Therefore, in addition to checking MSR_IA32_MISC_ENABLE bit 38, verify
-that CPUID.06H:EAX[1] is 0 to accurately determine if turbo mode is
-disabled.
-
-Fixes: 4521e1a0ce17 ("cpufreq: intel_pstate: Reflect current no_turbo state correctly")
-Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
-Cc: All applicable <stable@vger.kernel.org>
-Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- drivers/cpufreq/intel_pstate.c | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index 28a038b2189f7..89e96d2da06c3 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -488,6 +488,9 @@ static inline void update_turbo_state(void)
- {
- u64 misc_en;
-
-+ if (!cpu_feature_enabled(X86_FEATURE_IDA))
-+ return true;
-+
- rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
- global.turbo_disabled = misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE;
- }
---
-2.39.5
-
usb-chipidea-ci_hdrc_imx-use-dev_err_probe.patch
usb-chipidea-ci_hdrc_imx-implement-usb_phy_init-erro.patch
serial-msm-configure-correct-working-mode-before-sta.patch
-cpufreq-intel_pstate-revise-global-turbo-disable-che.patch
-cpufreq-intel_pstate-fold-intel_pstate_max_within_li.patch
-cpufreq-intel_pstate-unchecked-msr-aceess-in-legacy-.patch
arm64-dts-rockchip-fix-iface-clock-name-on-px30-iomm.patch
iommu-amd-fix-potential-buffer-overflow-in-parse_ivr.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
