kernel.git/arch/x86/kernel/cpu/mtrr, branch linux-rolling-stable

Merge tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2025-12-06T01:29:04Z

Pull SoC driver updates from Arnd Bergmann: "This is the first half of the driver changes: - A treewide interface change to the "syscore" operations for power management, as a preparation for future Tegra specific changes - Reset controller updates with added drivers for LAN969x, eic770 and RZ/G3S SoCs - Protection of system controller registers on Renesas and Google SoCs, to prevent trivially triggering a system crash from e.g. debugfs access - soc_device identification updates on Nvidia, Exynos and Mediatek - debugfs support in the ST STM32 firewall driver - Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI - Cleanups for memory controller support on Nvidia and Renesas" * tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (114 commits) memory: tegra186-emc: Fix missing put_bpmp Documentation: reset: Remove reset_controller_add_lookup() reset: fix BIT macro reference reset: rzg2l-usbphy-ctrl: Fix a NULL vs IS_ERR() bug in probe reset: th1520: Support reset controllers in more subsystems reset: th1520: Prepare for supporting multiple controllers dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys dt-bindings: reset: thead,th1520-reset: Remove non-VO-subsystem resets reset: remove legacy reset lookup code clk: davinci: psc: drop unused reset lookup reset: rzg2l-usbphy-ctrl: Add support for RZ/G3S SoC reset: rzg2l-usbphy-ctrl: Add support for USB PWRRDY dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3S support reset: eswin: Add eic7700 reset driver dt-bindings: reset: eswin: Documentation for eic7700 SoC reset: sparx5: add LAN969x support dt-bindings: reset: microchip: Add LAN969x support soc: rockchip: grf: Add select correct PWM implementation on RK3368 soc/tegra: pmc: Add USB wake events for Tegra234 amba: tegra-ahb: Fix device leak on SMMU enable ...

Merge tag 'x86_misc_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-12-02T22:16:42Z

Pull misc x86 updates from Dave Hansen: "The most significant are some changes to ensure that symbols exported for KVM are used only by KVM modules themselves, along with some related cleanups. In true x86/misc fashion, the other patch is completely unrelated and just enhances an existing pr_warn() to make it clear to users how they have tainted their kernel when something is mucking with MSRs. Summary: - Make MSR-induced taint easier for users to track down - Restrict KVM-specific exports to KVM itself" * tag 'x86_misc_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible x86/mm: Drop unnecessary export of "ptdump_walk_pgd_level_debugfs" x86/mtrr: Drop unnecessary export of "mtrr_state" x86/bugs: Drop unnecessary export of "x86_spec_ctrl_base" x86/msr: Add CPU_OUT_OF_SPEC taint name to "unrecognized" pr_warn(msg)

x86/{boot,mtrr}: Remove unused function declarations

2025-11-22T20:26:36Z

Commits 28be1b454c2b ("x86/boot: Remove unused copy_*_gs() functions") 34d2819f2078 ("x86, mtrr: Remove unused mtrr/state.c") removed the functions but left the prototypes. Remove them. [ bp: Merge into a single patch. ] Signed-off-by: Yue Haibing Signed-off-by: Borislav Petkov (AMD) Link: https://patch.msgid.link/20251120121037.1479334-1-yuehaibing@huawei.com

syscore: Pass context data to callbacks

2025-11-14T09:01:52Z

Several drivers can benefit from registering per-instance data along with the syscore operations. To achieve this, move the modifiable fields out of the syscore_ops structure and into a separate struct syscore that can be registered with the framework. Add a void * driver data field for drivers to store contextual data that will be passed to the syscore ops. Acked-by: Rafael J. Wysocki (Intel) Signed-off-by: Thierry Reding

x86/mtrr: Drop unnecessary export of "mtrr_state"

2025-11-12T23:24:42Z

Don't export "mtrr_state" as usage is limited to arch/x86/kernel/cpu/mtrr (and nothing outside of that directory even includes the local mtrr.h). No functional change intended. Signed-off-by: Sean Christopherson Signed-off-by: Dave Hansen Link: https://patch.msgid.link/20251112173944.1380633-3-seanjc%40google.com

x86/mtrr: Remove license boilerplate text with bad FSF address

2025-08-22T17:37:11Z

The Free Software Foundation does not reside in "675 Mass Ave, Cambridge" anymore, so no need to mention that address in the source code here. But instead of updating the address to their current location, just drop the license boilerplate text and use a proper SPDX license identifier instead. The text talks about the "GNU *Library* General Public License" and "any later version", so LGPL-2.0+ is the right choice here. [ bp: Massage commit message. ] Signed-off-by: Thomas Huth Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/20250801084531.34089-1-thuth@redhat.com

x86/mtrr: Check if fixed-range MTRRs exist in mtrr_save_fixed_ranges()

2025-05-12T11:04:40Z

When suspending, save_processor_state() calls mtrr_save_fixed_ranges() to save fixed-range MTRRs. On platforms without fixed-range MTRRs like the ACRN hypervisor which has removed fixed-range MTRR emulation, accessing these MSRs will trigger an unchecked MSR access error. Make sure fixed-range MTRRs are supported before access to prevent such error. Since mtrr_state.have_fixed is only set when MTRRs are present and enabled, checking the CPU feature flag in mtrr_save_fixed_ranges() is unnecessary. Fixes: 3ebad5905609 ("[PATCH] x86: Save and restore the fixed-range MTRRs of the BSP when suspending") Signed-off-by: Jiaqing Zhao Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/20250509170633.3411169-2-jiaqing.zhao@linux.intel.com

x86/mtrr: Modify a x86_model check to an Intel VFM check

2025-03-19T10:19:40Z

Simplify one of the last few Intel x86_model checks in arch/x86 by substituting it with a VFM one. Signed-off-by: Sohil Mehta Signed-off-by: Ingo Molnar Acked-by: Dave Hansen Link: https://lore.kernel.org/r/20250219184133.816753-5-sohil.mehta@intel.com

x86/mtrr: Use str_enabled_disabled() helper in print_mtrr_state()

2025-03-19T10:17:56Z

Remove hard-coded strings by using the str_enabled_disabled() helper function. Suggested-by: Christophe JAILLET Signed-off-by: Thorsten Blum Signed-off-by: Dave Hansen Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/all/20250117144900.171684-2-thorsten.blum%40linux.dev

x86/mtrr: Remove unnecessary strlen() in mtrr_write()

2025-02-25T19:50:55Z

The local variable length already holds the string length after calling strncpy_from_user(). Using another local variable linlen and calling strlen() is therefore unnecessary and can be removed. Remove linlen and strlen() and use length instead. No change in functionality intended. Signed-off-by: Thorsten Blum Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20250225131621.329699-2-thorsten.blum@linux.dev