Enable hardening against JIT spraying when Spectre-v2 mitigations are in
use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip
enabling the IBPB flush if the BPF dispatcher is already using a retpoline
sequence.

This hardening applies only when BPF-JIT is in use. Guard the enabling
under CONFIG_BPF_JIT so that bugs.c still builds with CONFIG_BPF_JIT=n.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Pull x86 microcode loader updates from Borislav Petkov:

 - Move the zero-revision fixup for AMD microcode to the patch level
   retrieval function and restrict it to Zen family processors, ensuring
   patch level arithmetic always operates on a valid revision

 - Fix an incorrect comment about which CPUID bit is checked when
   determining whether the microcode loader should be disabled

 - Add the latest Intel microcode revision data for a broad range of
   processor models and steppings and add the script which generates the
   header of minimum expected Intel microcode revisions

* tag 'x86_microcode_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Move the no-revision fixup to get_patch_level()
  x86/microcode: Fix comment in microcode_loader_disabled()
  scripts/x86/intel: Add a script to update the old microcode list
  x86/microcode/intel: Refresh old_microcode defines with Nov 2025 release

Pull x86 cleanups from Borislav Petkov:

 - The usual pile of cleanups and fixlets the cat dragged in

* tag 'x86_cleanups_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Remove obsolete aperfmperf_get_khz() declaration
  x86/pmem: Check for platform_device_alloc() retval
  x86/platform/uv: Use str_enabled_disabled() in uv_nmi_setup_hubless_intr()
  x86/cpu: Keep the PROCESSOR_SELECT menu together
  x86/tlb: Convert copy_from_user() + kstrtouint() to kstrtouint_from_user()
  x86/purgatory: Fix #endif comment
  x86/boot: Get rid of kstrtoull()
  x86/boot/compressed: Use boot_kstrtoul() for hugepages= parsing

Pull x86 resource control updates from Borislav Petkov:
 "Preparatory work for MPAM counter assignment:

   - Simplify the error handling path when creating monitor group event
     configuration directories

   - Make the MBM event filter configurable only on architectures that
     support it and expose this with the respective file modes in the
     event config

   - Disallow the MBA software controller on systems where MBM counters
     are assignable, as it requires continuous bandwidth measurement
     that assignable counters do not guarantee

   - Replace a compile-time Kconfig option for fixed counter assignment
     with a per-architecture runtime property, and expose whether the
     counter assignment mode is changeable to userspace

   - Continue counter allocation across all domains instead of aborting
     at the first failure

   - Document that automatic MBM counter assignment is best effort and
     may not assign counters to all domains

   - Document the behavior of task ID 0 and idle tasks in the resctrl
     tasks file"

* tag 'x86_cache_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  fs/resctrl: Document tasks file behaviour for task id 0 and idle tasks
  fs/resctrl: Document that automatic counter assignment is best effort
  fs/resctrl: Continue counter allocation after failure
  fs/resctrl: Add monitor property 'mbm_cntr_assign_fixed'
  fs/resctrl: Disallow the software controller when MBM counters are assignable
  x86,fs/resctrl: Create 'event_filter' files read only if they're not configurable
  fs/resctrl: Tidy up the error path in resctrl_mkdir_event_configs()

Pull x86 cpuid updates from Ingo Molnar:

 - CPUID API updates (Ahmed S. Darwish):
    - Introduce a centralized CPUID parser
    - Introduce a centralized CPUID data model
    - Introduce <asm/cpuid/leaf_types.h>
    - Rename cpuid_leaf()/cpuid_subleaf() APIs
    - treewide: Explicitly include the x86 CPUID headers

 - Update to x86-cpuid-db v3.1 (Maciej Wieczor-Retman)

 - Continued removal of pre-i586 support and related simplifications
   (Ingo Molnar)

 - Add Intel CPU model number for rugged Panther Lake (Tony Luck)

 - Misc fixes, updates and cleanups by Arnd Bergmann, Chao Gao, Lukas
   Bulwahn, Sohil Mehta, Maciej Wieczor-Retman.

* tag 'x86-cpu-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (25 commits)
  x86/cpu: Make CONFIG_X86_CX8 unconditional
  x86/cpu: Remove unused !CONFIG_X86_TSC code
  x86/cpuid: Update bitfields to x86-cpuid-db v3.1
  tools/x86/kcpuid: Update bitfields to x86-cpuid-db v3.1
  x86/cpu: Make CONFIG_X86_TSC unconditional
  MAINTAINERS: Drop obsolete FPU EMULATOR section
  x86/cpu: Fix a F00F bug warning and clean up surrounding code
  x86/cpu: Add Intel CPU model number for rugged Panther Lake
  x86/cpuid: Introduce a centralized CPUID parser
  x86/cpu: Introduce a centralized CPUID data model
  x86/cpuid: Introduce <asm/cpuid/leaf_types.h>
  x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs
  x86/cpu: Do not include the CPUID API header in asm/processor.h
  Documentation: core-api/cpu_hotplug: Remove stale cpu0_hotplug docs
  x86/cpu, cpufreq: Remove AMD ELAN support
  x86/fpu: Remove the math-emu/ FPU emulation library
  x86/fpu: Remove the 'no387' boot option
  x86/fpu: Remove MATH_EMULATION and related glue code
  treewide: Explicitly include the x86 CPUID headers
  x86/cpu: Remove the CONFIG_X86_INVD_BUG quirk
  ...

Pull x86/msr updates from Ingo Molnar:

 - Large series to reorganize the rdmsr/wrmsr APIs to remove
   32-bit variants and convert to 64-bit variants (Juergen Gross)

 - Fix W=1 warning (HyeongJun An)

* tag 'x86-msr-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  x86/msr: Remove wrmsrl()
  x86/msr: Switch wrmsrl() users to wrmsrq()
  x86/msr: Remove rdmsrl()
  x86/msr: Switch rdmsrl() users to rdmsrq()
  x86/msr: Remove wrmsr_safe_on_cpu()
  x86/msr: Switch wrmsr_safe_on_cpu() users to wrmsrq_safe_on_cpu()
  x86/msr: Remove rdmsr_safe_on_cpu()
  x86/msr: Switch rdmsr_safe_on_cpu() users to rdmsrq_safe_on_cpu()
  x86/msr: Don't use rdmsr_safe_on_cpu() in rdmsrq_safe_on_cpu()
  x86/msr: Remove wrmsr_on_cpu()
  x86/msr: Switch wrmsr_on_cpu() users to wrmsrq_on_cpu()
  x86/msr: Remove rdmsr_on_cpu()
  x86/msr: Switch rdmsr_on_cpu() users to rdmsrq_on_cpu()
  x86/msr: Remove rdmsrl_on_cpu()
  x86/msr: Switch rdmsrl_on_cpu() user to rdmsrq_on_cpu()
  x86/process: Convert rdmsr() to rdmsrq() in arch_post_acpi_subsys_init() to address W=1 warning

Pull interrupt core updates from Thomas Gleixner:

  - Rework of /proc/interrupt handling:

    /proc/interrupts was subject to micro optimizations for a long time,
    but most of the low hanging fruit was left on the table. This rework
    addresses the major time consuming issues:

      - Printing a long series of zeros one by one via a format string
        instead of counting subsequent zeros and emitting a string
        constant.

      - Simplify and cache the conditions whether interrupts should be
        printed

      - Use a proper iteration over the interrupt descriptor xarray
        instead of walking and testing one by one.

      - Provide helper functions for the architecture code to emit the
        architecture specific counters

      - Convert the counter structure in x86 to an array, which
        simplifies the output and add mechanisms to suppress unused
        architecture interrupts, which just occupy space for nothing.
        Adopt the new core mechanisms.

    This adjusts the gdb scripts related to interrupt counter statistics
    to work with the new mechanisms.

  - Prevent a string overflow in the /proc/irq/$N/ directory name
    creation code.

* tag 'irq-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Add missing 's' back to thermal event printout
  genirq/proc: Speed up /proc/interrupts iteration
  genirq/proc: Runtime size the chip name
  genirq: Expose irq_find_desc_at_or_after() in core code
  genirq: Add rcuref count to struct irq_desc
  genirq/proc: Increase default interrupt number precision to four
  genirq: Calculate precision only when required
  genirq: Cache the condition for /proc/interrupts exposure
  genirq/manage: Make NMI cleanup RT safe
  genirq: Expose nr_irqs in core code
  scripts/gdb: Update x86 interrupts to the array based storage
  x86/irq: Move IOAPIC misrouted and PIC/APIC error counts into irq_stats
  x86/irq: Suppress unlikely interrupt stats by default
  x86/irq: Make irqstats array based
  genirq/proc: Utilize irq_desc::tot_count to avoid evaluation
  genirq/proc: Avoid formatting zero counts in /proc/interrupts
  x86/irq: Optimize interrupts decimals printing
  genirq/proc: Size interrupt directory names for 10-digit interrupt numbers

wrmsrl() is a deprecated synonym for wrmsrq(). Switch its users to
wrmsrq().

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Long Li <longli@microsoft.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Link: https://patch.msgid.link/20260608082809.3492719-4-jgross@suse.com

rdmsrl() is a deprecated synonym for rdmsrq(). Switch its users to
rdmsrq().

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Long Li <longli@microsoft.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Link: https://patch.msgid.link/20260608082809.3492719-2-jgross@suse.com

In order to prepare retiring wrmsr_on_cpu() switch wrmsr_on_cpu() users
to wrmsrq_on_cpu().

Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@kernel.org>
Link: https://patch.msgid.link/20260608051741.3207435-6-jgross@suse.com