wireguard-linux/arch/x86/kernel/cpu, branch update-toolchain

x86/mtrr: Check if fixed MTRRs exist before saving them

2024-08-08T15:03:12Z

MTRRs have an obsolete fixed variant for fine grained caching control of the 640K-1MB region that uses separate MSRs. This fixed variant has a separate capability bit in the MTRR capability MSR. So far all x86 CPUs which support MTRR have this separate bit set, so it went unnoticed that mtrr_save_state() does not check the capability bit before accessing the fixed MTRR MSRs. Though on a CPU that does not support the fixed MTRR capability this results in a #GP. The #GP itself is harmless because the RDMSR fault is handled gracefully, but results in a WARN_ON(). Add the missing capability check to prevent this. Fixes: 2b1f6278d77c ("[PATCH] x86: Save the MTRRs of the BSP before booting an AP") Signed-off-by: Andi Kleen Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/20240808000244.946864-1-ak@linux.intel.com

x86/CPU/AMD: Add models 0x60-0x6f to the Zen5 range

2024-07-30T13:22:52Z

Add some new Zen5 models for the 0x1A family. [ bp: Merge the 0x60 and 0x70 ranges. ] Signed-off-by: Perry Yuan Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/r/20240729064626.24297-1-bp@kernel.org

x86/aperfmperf: Fix deadlock on cpu_hotplug_lock

2024-07-29T13:32:37Z

The broken patch results in a call to init_freq_invariance_cppc() in a CPU hotplug handler in both the path for initially present CPUs and those hotplugged later. That function includes a one time call to amd_set_max_freq_ratio() which in turn calls freq_invariance_enable() that has a static_branch_enable() which takes the cpu_hotlug_lock which is already held. Avoid the deadlock by using static_branch_enable_cpuslocked() as the lock will always be already held. The equivalent path on Intel does not already hold this lock, so take it around the call to freq_invariance_enable(), which results in it being held over the call to register_syscall_ops, which looks to be safe to do. Fixes: c1385c1f0ba3 ("ACPI: processor: Simplify initial onlining to use same path for cold and hotplug") Closes: https://lore.kernel.org/all/CABXGCsPvqBfL5hQDOARwfqasLRJ_eNPBbCngZ257HOe=xbWDkA@mail.gmail.com/ Reported-by: Mikhail Gavrilov Suggested-by: Thomas Gleixner Signed-off-by: Jonathan Cameron Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Thomas Gleixner Tested-by: Mikhail Gavrilov Tested-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/r/20240729105504.2170-1-Jonathan.Cameron@huawei.com

Merge tag 'pm-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2024-07-16T22:54:03Z

Pull power management updates from Rafael Wysocki: "These add a new cpufreq driver for Loongson-3, add support for new features in the intel_pstate (Lunar Lake and Arrow Lake platforms, OOB mode for Emerald Rapids, highest performance change interrupt), amd-pstate (fast CPPC) and sun50i (Allwinner H700 speed bin) cpufreq drivers, simplify the cpufreq driver interface, simplify the teo cpuidle governor, adjust the pm-graph utility for a new version of Python, address issues and clean up code. Specifics: - Add Loongson-3 CPUFreq driver support (Huacai Chen) - Add support for the Arrow Lake and Lunar Lake platforms and the out-of-band (OOB) mode on Emerald Rapids to the intel_pstate cpufreq driver, make it support the highest performance change interrupt and clean it up (Srinivas Pandruvada) - Switch cpufreq to new Intel CPU model defines (Tony Luck) - Simplify the cpufreq driver interface by switching the .exit() driver callback to the void return data type (Lizhe, Viresh Kumar) - Make cpufreq_boost_enabled() return bool (Dhruva Gole) - Add fast CPPC support to the amd-pstate cpufreq driver, address multiple assorted issues in it and clean it up (Perry Yuan, Mario Limonciello, Dhananjay Ugwekar, Meng Li, Xiaojian Du) - Add Allwinner H700 speed bin to the sun50i cpufreq driver (Ryan Walklin) - Fix memory leaks and of_node_put() usage in the sun50i and qcom-nvmem cpufreq drivers (Javier Carrasco) - Clean up the sti and dt-platdev cpufreq drivers (Jeff Johnson, Raphael Gallais-Pou) - Fix deferred probe handling in the TI cpufreq driver and wrong return values of ti_opp_supply_probe(), and add OPP tables for the AM62Ax and AM62Px SoCs to it (Bryan Brattlof, Primoz Fiser) - Avoid overflow of target_freq in .fast_switch() in the SCMI cpufreq driver (Jagadeesh Kona) - Use dev_err_probe() in every error path in probe in the Mediatek cpufreq driver (Nícolas Prado) - Fix kernel-doc param for longhaul_setstate in the longhaul cpufreq driver (Yang Li) - Fix system resume handling in the CPPC cpufreq driver (Riwen Lu) - Improve the teo cpuidle governor and clean up leftover comments from the menu cpuidle governor (Christian Loehle) - Clean up a comment typo in the teo cpuidle governor (Atul Kumar Pant) - Add missing MODULE_DESCRIPTION() macro to cpuidle haltpoll (Jeff Johnson) - Switch the intel_idle driver to new Intel CPU model defines (Tony Luck) - Switch the Intel RAPL driver new Intel CPU model defines (Tony Luck) - Simplify if condition in the idle_inject driver (Thorsten Blum) - Fix missing cleanup on error in _opp_attach_genpd() (Viresh Kumar) - Introduce an OF helper function to inform if required-opps is used and drop a redundant in-parameter to _set_opp_level() (Ulf Hansson) - Update pm-graph to v5.12 which includes fixes and major code revamp for python3.12 (Todd Brandt) - Address several assorted issues in the cpupower utility (Roman Storozhenko)" * tag 'pm-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (77 commits) cpufreq: sti: fix build warning cpufreq: mediatek: Use dev_err_probe in every error path in probe cpufreq: Add Loongson-3 CPUFreq driver support cpufreq: Make cpufreq_driver->exit() return void cpufreq/amd-pstate: Fix the scaling_max_freq setting on shared memory CPPC systems cpufreq/amd-pstate-ut: Convert nominal_freq to khz during comparisons cpufreq: pcc: Remove empty exit() callback cpufreq: loongson2: Remove empty exit() callback cpufreq: nforce2: Remove empty exit() callback cpupower: fix lib default installation path cpufreq: docs: Add missing scaling_available_frequencies description cpuidle: teo: Don't count non-existent intercepts cpupower: Disable direct build of the 'bench' subproject cpuidle: teo: Remove recent intercepts metric Revert: "cpuidle: teo: Introduce util-awareness" cpufreq: make cpufreq_boost_enabled() return bool cpufreq: intel_pstate: Support highest performance change interrupt x86/cpufeatures: Add HWP highest perf change feature flag Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method cpufreq: amd-pstate: Cap the CPPC.max_perf to nominal_perf if CPB is off ...

Merge tag 'x86_cache_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-07-16T17:53:54Z

Pull x86 resource control updates from Borislav Petkov: - Enable Sub-NUMA clustering to work with resource control on Intel by teaching resctrl to handle scopes due to the clustering which partitions the L3 cache into sets. Modify and extend the subsystem to handle such scopes properly * tag 'x86_cache_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/resctrl: Update documentation with Sub-NUMA cluster changes x86/resctrl: Detect Sub-NUMA Cluster (SNC) mode x86/resctrl: Enable shared RMID mode on Sub-NUMA Cluster (SNC) systems x86/resctrl: Make __mon_event_count() handle sum domains x86/resctrl: Fill out rmid_read structure for smp_call*() to read a counter x86/resctrl: Handle removing directories in Sub-NUMA Cluster (SNC) mode x86/resctrl: Create Sub-NUMA Cluster (SNC) monitor files x86/resctrl: Allocate a new field in union mon_data_bits x86/resctrl: Refactor mkdir_mondata_subdir() with a helper function x86/resctrl: Initialize on-stack struct rmid_read instances x86/resctrl: Add a new field to struct rmid_read for summation of domains x86/resctrl: Prepare for new Sub-NUMA Cluster (SNC) monitor files x86/resctrl: Block use of mba_MBps mount option on Sub-NUMA Cluster (SNC) systems x86/resctrl: Introduce snc_nodes_per_l3_cache x86/resctrl: Add node-scope to the options for feature scope x86/resctrl: Split the rdt_domain and rdt_hw_domain structures x86/resctrl: Prepare for different scope for control/monitor operations x86/resctrl: Prepare to split rdt_domain structure x86/resctrl: Prepare for new domain scope

Merge tag 'x86_cpu_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-07-16T03:25:16Z

Pull x86 cpu model updates from Borislav Petkov: - Flip the logic to add feature names to /proc/cpuinfo to having to explicitly specify the flag if there's a valid reason to show it in /proc/cpuinfo - Switch a bunch of Intel x86 model checking code to the new CPU model defines - Fixes and cleanups * tag 'x86_cpu_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu/intel: Drop stray FAM6 check with new Intel CPU model defines x86/cpufeatures: Flip the /proc/cpuinfo appearance logic x86/CPU/AMD: Always inline amd_clear_divider() x86/mce/inject: Add missing MODULE_DESCRIPTION() line perf/x86/rapl: Switch to new Intel CPU model defines x86/boot: Switch to new Intel CPU model defines x86/cpu: Switch to new Intel CPU model defines perf/x86/intel: Switch to new Intel CPU model defines x86/virt/tdx: Switch to new Intel CPU model defines x86/PCI: Switch to new Intel CPU model defines x86/cpu/intel: Switch to new Intel CPU model defines x86/platform/intel-mid: Switch to new Intel CPU model defines x86/pconfig: Remove unused MKTME pconfig code x86/cpu: Remove useless work in detect_tme_early()

Merge tag 'x86_bugs_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-07-16T03:07:27Z

Pull x86 cpu mitigation updates from Borislav Petkov: - Add a spectre_bhi=vmexit mitigation option aimed at cloud environments - Remove duplicated Spectre cmdline option documentation - Add separate macro definitions for syscall handlers which do not return in order to address objtool warnings * tag 'x86_bugs_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Add 'spectre_bhi=vmexit' cmdline option x86/bugs: Remove duplicate Spectre cmdline option descriptions x86/syscall: Mark exit[_group] syscall handlers __noreturn

Merge tag 'x86_vmware_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-07-16T03:05:40Z

Pull x86 vmware updates from Borislav Petkov: - Add a unified VMware hypercall API layer which should be used by all callers instead of them doing homegrown solutions. This will provide for adding API support for confidential computing solutions like TDX * tag 'x86_vmware_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vmware: Add TDX hypercall support x86/vmware: Remove legacy VMWARE_HYPERCALL* macros x86/vmware: Correct macro names x86/vmware: Use VMware hypercall API drm/vmwgfx: Use VMware hypercall API input/vmmouse: Use VMware hypercall API ptp/vmware: Use VMware hypercall API x86/vmware: Introduce VMware hypercall API

Merge tag 'x86_cc_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-07-16T02:36:01Z

Pull x86 confidential computing updates from Borislav Petkov: "Unrelated x86/cc changes queued here to avoid ugly cross-merges and conflicts: - Carve out CPU hotplug function declarations into a separate header with the goal to be able to use the lockdep assertions in a more flexible manner - As a result, refactor cacheinfo code after carving out a function to return the cache ID associated with a given cache level - Cleanups Add support to be able to kexec TDX guests: - Expand ACPI MADT CPU offlining support - Add machinery to prepare CoCo guests memory before kexec-ing into a new kernel - Cleanup, readjust and massage related code" * tag 'x86_cc_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) ACPI: tables: Print MULTIPROC_WAKEUP when MADT is parsed x86/acpi: Add support for CPU offlining for ACPI MADT wakeup method x86/mm: Introduce kernel_ident_mapping_free() x86/smp: Add smp_ops.stop_this_cpu() callback x86/acpi: Do not attempt to bring up secondary CPUs in the kexec case x86/acpi: Rename fields in the acpi_madt_multiproc_wakeup structure x86/mm: Do not zap page table entries mapping unaccepted memory table during kdump x86/mm: Make e820__end_ram_pfn() cover E820_TYPE_ACPI ranges x86/tdx: Convert shared memory back to private on kexec x86/mm: Add callbacks to prepare encrypted memory for kexec x86/tdx: Account shared memory x86/mm: Return correct level from lookup_address() if pte is none x86/mm: Make x86_platform.guest.enc_status_change_*() return an error x86/kexec: Keep CR4.MCE set during kexec for TDX guest x86/relocate_kernel: Use named labels for less confusion cpu/hotplug, x86/acpi: Disable CPU offlining for ACPI MADT wakeup cpu/hotplug: Add support for declaring CPU offlining not supported x86/apic: Mark acpi_mp_wake_* variables as __ro_after_init x86/acpi: Extract ACPI MADT wakeup code into a separate file x86/kexec: Remove spurious unconditional JMP from from identity_mapped() ...

Merge tag 'ras_core_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-07-16T01:22:48Z

Pull RAS updates from Borislav Petkov: - A cleanup and a correction to the error injection driver to inject a MCA_MISC value only when one has actually been supplied by the user * tag 'ras_core_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Remove unused variable and return value in machine_check_poll() x86/mce/inject: Only write MCA_MISC when a value has been supplied