kernel: intel_pstate: Support newer CPUs
This commit cherry-picks commits from the mainline kernel tree to let the intel_pstate support the following newer CPUs in certain cases: * Ice Lake * Sapphire Rapids Support for the following cases are added: * When hardware P-states (HWP) is disabled in the BIOS/firmware, then the intel_pstate driver will still get enabled (albeit in 'passive' mode) for these CPUs, as opposed to the intel_pstate driver reporting that the CPU is not supported. * When out-of-band (OOB) P-state management is enabled with Ice Lake and Sapphire Rapids CPUs, then the intel_pstate driver gracefully disables itself, as the BIOS/platform firmware is responsible for managing the HWP in such cases. The following bullet point list depicts the commits that have been cherry-picked, along with the output of "git describe --contains" for each commit, to provide a sense of how recent each commit is: * commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode") (v5.14-rc1~144^2~1^2~1^2~6) * commit cd23f02f1668 ("cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs") (v5.16-rc3~24^2~3) * commit bbd67f1b5a94 ("cpufreq: intel_pstate: Support Sapphire Rapids OOB mode") (v5.19-rc1~182^2~2^2~11) * commit df51f287b5de ("cpufreq: intel_pstate: Add Sapphire Rapids support in no-HWP mode") (v6.2-rc1~189^2~3^2~4) We should note that we considered cherry-picking the following commits too, but we opted to not do that due to the reasons discussed below: * commit 706c5328851d ("cpufreq: intel_pstate: Add Cometlake support in no-HWP mode") (v5.14-rc1~144^2~1^2~1^2~5) * commit b6e6f8beec98 ("cpufreq: intel_pstate: Update EPP for AlderLake mobile") (v5.17-rc1~167^2~2^2~21) * commit 71bb5c82aaae ("cpufreq: intel_pstate: Add Tigerlake support in no-HWP mode") (v6.1-rc1~205^2~1^2~1) * commit 60675225ebee ("cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids") (v6.3-rc1~21^2~6) The commits related to Comet Lake and Tiger Lake were skipped, because they refer to non-server class CPUs to the best of our knowledge, and StarlingX is usually run on server-class hardware. The commit for Alder Lake mobile CPUs is a dependency for the commit that adjusts the Energy/Performance Preference (EPP) setting for Sapphire Rapids CPUs. The latter commit improves performance when the 'powersave' governor is used, or when balance_performance setting is used in the BIOS. While it is possible to cherry-pick both of these commits (which was done in an earlier iteration of this commit), we opted to not do that, mainly to keep the scope of this commit smaller, and also because the two commits appeared optional (as opposed to necessary) to us. Verification - The standard and real-time kernel packages were successfully built with this commit. - An ISO image, built with a slightly different version of this commit for an older CentOS-based StarlingX version, containing Ice Lake CPU-related changes only, was installed onto a server that has an Ice Lake Xeon CPU, with HWP disabled and with out-of-band hardware P-state management enabled in the BIOS. This resulted in the intel_pstate driver being disabled, as expected. - A StarlingX ISO image based on the StarlingX master branch with this commit included was successfully installed onto a server with a Sapphire Rapids Xeon CPU, in low-latency All-in-One simplex mode. (Please note that the server was not Ansible-bootstrapped due to unrelated difficulties.) The intel_pstate driver was successfully initialized for the case where HWP was enabled ("Native Mode") in the BIOS settings, and for the case where HWP was turned off ("Disabled") in the BIOS settings. For the former case, intel_pstate's status was reported as "active", and for the latter case, intel_pstate's status was reported as "passive", as indicated by "/sys/devices/system/cpu/intel_pstate/status". Prior to this commit, with HWP disabled in the BIOS, intel_pstate would not load due to the CPU not being recognized. - On the same server with a Sapphire Rapids CPU, enabling out-of-band HWP management caused the intel_pstate driver to disable itself by printing out "P-states controlled by the platform" and returning -ENODEV, as expected. Partial-Bug: 2016028 Change-Id: I55384c2239d6543662eeef62e86a4b8951887fd7 Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
This commit is contained in:
parent
d5db2760ab
commit
8829ae9ffa
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@ -0,0 +1,39 @@
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From 71c5dda28cd1b6e2e4257a7ed511abd74b6bd46f Mon Sep 17 00:00:00 2001
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From: Giovanni Gherdovich <ggherdovich@suse.cz>
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Date: Tue, 18 May 2021 14:34:12 +0200
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Subject: [PATCH] cpufreq: intel_pstate: Add Icelake servers support in no-HWP
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mode
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Users may disable HWP in firmware, in which case intel_pstate wouldn't load
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unless the CPU model is explicitly supported.
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Add ICELAKE_X to the list of CPUs that can register intel_pstate while not
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advertising the HWP capability. Without this change, an ICELAKE_X in no-HWP
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mode could only use the acpi_cpufreq frequency scaling driver.
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See also commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers
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support").
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Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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(cherry picked from commit fbdc21e9b038d00d0d56fa4e0f7701d42ae08f00)
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 1686705bee7b..14504c761588 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2100,6 +2100,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
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X86_MATCH(ATOM_GOLDMONT, core_funcs),
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X86_MATCH(ATOM_GOLDMONT_PLUS, core_funcs),
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X86_MATCH(SKYLAKE_X, core_funcs),
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+ X86_MATCH(ICELAKE_X, core_funcs),
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{}
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};
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MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
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--
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2.25.1
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@ -0,0 +1,39 @@
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From 701f897e8c760bfa30013c152a783a7bd5ee0cf6 Mon Sep 17 00:00:00 2001
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From: Adamos Ttofari <attofari@amazon.de>
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Date: Fri, 12 Nov 2021 09:16:57 +0000
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Subject: [PATCH] cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs
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Commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers
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support in no-HWP mode") enabled the use of Intel P-State driver
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for Ice Lake servers.
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But it doesn't cover the case when OS can't control P-States.
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Therefore, for Ice Lake server, if MSR_MISC_PWR_MGMT bits 8 or 18
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are enabled, then the Intel P-State driver should exit as OS can't
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control P-States.
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Fixes: fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode")
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Signed-off-by: Adamos Ttofari <attofari@amazon.de>
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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(cherry picked from commit cd23f02f166892603eb9f2d488152b975872b682)
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 14504c761588..1bf7ae2ec8cd 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2109,6 +2109,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
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X86_MATCH(BROADWELL_D, core_funcs),
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X86_MATCH(BROADWELL_X, core_funcs),
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X86_MATCH(SKYLAKE_X, core_funcs),
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+ X86_MATCH(ICELAKE_X, core_funcs),
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{}
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};
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--
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2.25.1
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@ -0,0 +1,33 @@
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From d657b378a206105f0b84348f22aa913c5383fccb Mon Sep 17 00:00:00 2001
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From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
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Date: Mon, 2 May 2022 13:50:52 -0700
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Subject: [PATCH] cpufreq: intel_pstate: Support Sapphire Rapids OOB mode
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Prevent intel_pstate to load when OOB (Out Of Band) P-states mode is
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enabled in Sapphire Rapids. The OOB identifying bits are same as the
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prior generation CPUs like Ice Lake servers. So, also add Sapphire
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Rapids to intel_pstate_cpu_oob_ids list.
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Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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(cherry picked from commit bbd67f1b5a9449b090560ca5288aef0cfe623275)
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 1bf7ae2ec8cd..3f894834fdee 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2110,6 +2110,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
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X86_MATCH(BROADWELL_X, core_funcs),
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X86_MATCH(SKYLAKE_X, core_funcs),
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X86_MATCH(ICELAKE_X, core_funcs),
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+ X86_MATCH(SAPPHIRERAPIDS_X, core_funcs),
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{}
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};
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--
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2.25.1
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@ -0,0 +1,44 @@
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From 829bfd11150f073c93c2f07188843ae6ad6bdb3b Mon Sep 17 00:00:00 2001
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From: Giovanni Gherdovich <ggherdovich@suse.cz>
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Date: Mon, 21 Nov 2022 16:35:40 +0100
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Subject: [PATCH] cpufreq: intel_pstate: Add Sapphire Rapids support in no-HWP
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mode
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Users may disable HWP in firmware, in which case intel_pstate wouldn't load
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unless the CPU model is explicitly supported.
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See also the following past commits:
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commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers support")
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commit 706c5328851d ("cpufreq: intel_pstate: Add Cometlake support in
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no-HWP mode")
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commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in
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no-HWP mode")
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commit 71bb5c82aaae ("cpufreq: intel_pstate: Add Tigerlake support in
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no-HWP mode")
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Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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(cherry picked from commit df51f287b5de3b9d4fd39593eafd1f8298d711c7)
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[ mvb: Fix a minor merge conflict involving missing Tiger Lake CPU
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support in StarlingX. ]
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 3f894834fdee..431c4068b62d 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2101,6 +2101,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
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X86_MATCH(ATOM_GOLDMONT_PLUS, core_funcs),
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X86_MATCH(SKYLAKE_X, core_funcs),
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X86_MATCH(ICELAKE_X, core_funcs),
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+ X86_MATCH(SAPPHIRERAPIDS_X, core_funcs),
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{}
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};
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MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
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--
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2.25.1
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@ -48,3 +48,7 @@
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0050-kernfs-prevent-early-freeing-of-root-node.patch
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0051-kernfs-remove-redundant-kernfs_rwsem-declaration.patch
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0052-kernfs-fix-NULL-dereferencing-in-kernfs_remove.patch
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0053-cpufreq-intel_pstate-Add-Icelake-servers-support-in-.patch
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0054-cpufreq-intel_pstate-Add-Ice-Lake-server-to-out-of-b.patch
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0055-cpufreq-intel_pstate-Support-Sapphire-Rapids-OOB-mod.patch
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0056-cpufreq-intel_pstate-Add-Sapphire-Rapids-support-in-.patch
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|
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@ -0,0 +1,39 @@
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From d92d4ffc712f4782e5bc022d99d45c463966e41a Mon Sep 17 00:00:00 2001
|
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From: Giovanni Gherdovich <ggherdovich@suse.cz>
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Date: Tue, 18 May 2021 14:34:12 +0200
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Subject: [PATCH] cpufreq: intel_pstate: Add Icelake servers support in no-HWP
|
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mode
|
||||
|
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Users may disable HWP in firmware, in which case intel_pstate wouldn't load
|
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unless the CPU model is explicitly supported.
|
||||
|
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Add ICELAKE_X to the list of CPUs that can register intel_pstate while not
|
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advertising the HWP capability. Without this change, an ICELAKE_X in no-HWP
|
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mode could only use the acpi_cpufreq frequency scaling driver.
|
||||
|
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See also commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers
|
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support").
|
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|
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Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
|
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
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(cherry picked from commit fbdc21e9b038d00d0d56fa4e0f7701d42ae08f00)
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 1686705bee7b..14504c761588 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2100,6 +2100,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
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X86_MATCH(ATOM_GOLDMONT, core_funcs),
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X86_MATCH(ATOM_GOLDMONT_PLUS, core_funcs),
|
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X86_MATCH(SKYLAKE_X, core_funcs),
|
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+ X86_MATCH(ICELAKE_X, core_funcs),
|
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{}
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};
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MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
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--
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2.25.1
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|
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@ -0,0 +1,39 @@
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From d72271f839550c054d93e797825bd749bd5a8f6a Mon Sep 17 00:00:00 2001
|
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From: Adamos Ttofari <attofari@amazon.de>
|
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Date: Fri, 12 Nov 2021 09:16:57 +0000
|
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Subject: [PATCH] cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs
|
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|
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Commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers
|
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support in no-HWP mode") enabled the use of Intel P-State driver
|
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for Ice Lake servers.
|
||||
|
||||
But it doesn't cover the case when OS can't control P-States.
|
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|
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Therefore, for Ice Lake server, if MSR_MISC_PWR_MGMT bits 8 or 18
|
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are enabled, then the Intel P-State driver should exit as OS can't
|
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control P-States.
|
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|
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Fixes: fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode")
|
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Signed-off-by: Adamos Ttofari <attofari@amazon.de>
|
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
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(cherry picked from commit cd23f02f166892603eb9f2d488152b975872b682)
|
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
|
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 14504c761588..1bf7ae2ec8cd 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2109,6 +2109,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
|
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X86_MATCH(BROADWELL_D, core_funcs),
|
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X86_MATCH(BROADWELL_X, core_funcs),
|
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X86_MATCH(SKYLAKE_X, core_funcs),
|
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+ X86_MATCH(ICELAKE_X, core_funcs),
|
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{}
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};
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--
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2.25.1
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|
|
@ -0,0 +1,33 @@
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From 3f316b2b3ee9ea147cd2392ff9580ec7cdd3ddce Mon Sep 17 00:00:00 2001
|
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From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
|
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Date: Mon, 2 May 2022 13:50:52 -0700
|
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Subject: [PATCH] cpufreq: intel_pstate: Support Sapphire Rapids OOB mode
|
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|
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Prevent intel_pstate to load when OOB (Out Of Band) P-states mode is
|
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enabled in Sapphire Rapids. The OOB identifying bits are same as the
|
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prior generation CPUs like Ice Lake servers. So, also add Sapphire
|
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Rapids to intel_pstate_cpu_oob_ids list.
|
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|
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Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
|
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
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(cherry picked from commit bbd67f1b5a9449b090560ca5288aef0cfe623275)
|
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Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
|
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---
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drivers/cpufreq/intel_pstate.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
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index 1bf7ae2ec8cd..3f894834fdee 100644
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--- a/drivers/cpufreq/intel_pstate.c
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+++ b/drivers/cpufreq/intel_pstate.c
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@@ -2110,6 +2110,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
|
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X86_MATCH(BROADWELL_X, core_funcs),
|
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X86_MATCH(SKYLAKE_X, core_funcs),
|
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X86_MATCH(ICELAKE_X, core_funcs),
|
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+ X86_MATCH(SAPPHIRERAPIDS_X, core_funcs),
|
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{}
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};
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--
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2.25.1
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|
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@ -0,0 +1,44 @@
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From 16e79a6cd1e512ee283a917a9ed54550ca56bc7d Mon Sep 17 00:00:00 2001
|
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From: Giovanni Gherdovich <ggherdovich@suse.cz>
|
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Date: Mon, 21 Nov 2022 16:35:40 +0100
|
||||
Subject: [PATCH] cpufreq: intel_pstate: Add Sapphire Rapids support in no-HWP
|
||||
mode
|
||||
|
||||
Users may disable HWP in firmware, in which case intel_pstate wouldn't load
|
||||
unless the CPU model is explicitly supported.
|
||||
|
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See also the following past commits:
|
||||
|
||||
commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers support")
|
||||
commit 706c5328851d ("cpufreq: intel_pstate: Add Cometlake support in
|
||||
no-HWP mode")
|
||||
commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in
|
||||
no-HWP mode")
|
||||
commit 71bb5c82aaae ("cpufreq: intel_pstate: Add Tigerlake support in
|
||||
no-HWP mode")
|
||||
|
||||
Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
|
||||
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||||
(cherry picked from commit df51f287b5de3b9d4fd39593eafd1f8298d711c7)
|
||||
[ mvb: Fix a minor merge conflict involving missing Tiger Lake CPU
|
||||
support in StarlingX. ]
|
||||
Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
|
||||
---
|
||||
drivers/cpufreq/intel_pstate.c | 1 +
|
||||
1 file changed, 1 insertion(+)
|
||||
|
||||
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
|
||||
index 3f894834fdee..431c4068b62d 100644
|
||||
--- a/drivers/cpufreq/intel_pstate.c
|
||||
+++ b/drivers/cpufreq/intel_pstate.c
|
||||
@@ -2101,6 +2101,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
|
||||
X86_MATCH(ATOM_GOLDMONT_PLUS, core_funcs),
|
||||
X86_MATCH(SKYLAKE_X, core_funcs),
|
||||
X86_MATCH(ICELAKE_X, core_funcs),
|
||||
+ X86_MATCH(SAPPHIRERAPIDS_X, core_funcs),
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
|
||||
--
|
||||
2.25.1
|
||||
|
|
@ -47,3 +47,7 @@
|
|||
0049-kernfs-prevent-early-freeing-of-root-node.patch
|
||||
0050-kernfs-remove-redundant-kernfs_rwsem-declaration.patch
|
||||
0051-kernfs-fix-NULL-dereferencing-in-kernfs_remove.patch
|
||||
0052-cpufreq-intel_pstate-Add-Icelake-servers-support-in-.patch
|
||||
0053-cpufreq-intel_pstate-Add-Ice-Lake-server-to-out-of-b.patch
|
||||
0054-cpufreq-intel_pstate-Support-Sapphire-Rapids-OOB-mod.patch
|
||||
0055-cpufreq-intel_pstate-Add-Sapphire-Rapids-support-in-.patch
|
||||
|
|
Loading…
Reference in New Issue