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Tony Luck 6f6947b238 x86/resctrl: Only check Intel systems for SNC 
topology_num_nodes_per_package() reports values greater than one on certain
AMD systems resulting in resctrl's Intel model specific SNC detection
printing the confusing message:

   "CoD enabled system? Resctrl not supported"

Add a check for Intel systems before looking at the topology.

[ reinette: Add Closes tag, fix tag typos, rework changelog ]

Fixes: 59674fc9d0 ("x86/resctrl: Fix SNC detection")
Reported-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Babu Moger <babu.moger@amd.com>
Link: https://patch.msgid.link/9849330f45ac86344cc5ac54df2d313906d70bc4.1780634584.git.reinette.chatre@intel.com
Closes: https://lore.kernel.org/lkml/37ac0376-43a3-4283-a3d5-4d57b3bec578@amd.com/
2026-06-05 11:09:34 +02:00
..
acpi
Revert "ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn"
2026-05-08 21:14:19 +02:00
apic
Merge tag 'x86-cleanups-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-04-14 14:03:27 -07:00
cpu
x86/resctrl: Only check Intel systems for SNC
2026-06-05 11:09:34 +02:00
fpu
Revert "x86/fpu: Refine and simplify the magic number check during signal return"
2026-05-29 15:05:30 -07:00
kprobes
Merge tag 'perf-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-12-01 20:42:01 -08:00
.gitignore
…
alternative.c
x86/alternative: delay freeing of smp_locks section
2026-04-03 17:38:34 +03:00
amd_gart_64.c
Merge tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
2025-12-06 09:25:05 -08:00
amd_nb.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
amd_node.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
aperture_64.c
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apm_32.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
asm-offsets_32.c
…
asm-offsets_64.c
…
asm-offsets.c
x86/entry/vdso32: Remove open-coded DWARF in sigreturn.S
2026-01-13 16:37:58 -08:00
audit_64.c
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bootflag.c
…
callthunks.c
x86/paravirt: Remove not needed includes of paravirt.h
2026-01-12 11:26:52 +01:00
cet.c
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cfi.c
x86/traps: Clarify KCFI instruction layout
2025-09-04 21:59:07 +02:00
check.c
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cpuid.c
…
crash_dump_32.c
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crash_dump_64.c
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crash.c
KVM: x86: Move bulk of emergency virtualizaton logic to virt subsystem
2026-03-04 08:52:49 -08:00
devicetree.c
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doublefault_32.c
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dumpstack_32.c
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dumpstack_64.c
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dumpstack.c
x86/dumpstack: Prevent KASAN false positive warnings in __show_regs()
2025-10-29 13:07:21 +01:00
e820.c
x86/boot/e820: Re-enable BIOS fallback if e820 table is empty
2026-05-07 10:04:54 +02:00
early_printk.c
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early-quirks.c
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ebda.c
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eisa.c
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espfix_64.c
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fred.c
x86/fred: Remove kernel log message when initializing exceptions
2026-03-27 16:38:24 +01:00
ftrace_32.S
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ftrace_64.S
x86/fgraph: Fix return_to_handler regs.rsp value
2026-01-30 13:40:08 -08:00
ftrace.c
x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines
2026-05-27 15:23:37 -07:00
head32.c
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head64.c
x86/boot: Create a confined code area for startup code
2025-09-03 18:00:01 +02:00
head_32.S
arch, mm: consolidate empty_zero_page
2026-04-05 13:53:01 -07:00
head_64.S
arch, mm: consolidate empty_zero_page
2026-04-05 13:53:01 -07:00
hpet.c
clocksource: Rewrite watchdog code completely
2026-03-20 13:36:32 +01:00
hw_breakpoint.c
x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible
2025-11-12 15:29:38 -08:00
i8237.c
syscore: Pass context data to callbacks
2025-11-14 10:01:52 +01:00
i8253.c
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i8259.c
syscore: Pass context data to callbacks
2025-11-14 10:01:52 +01:00
ibt_selftest.S
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idt.c
x86/kvm/vmx: Fix x86_64 CFI build
2026-05-28 11:31:50 +02:00
io_delay.c
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ioport.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
irq_32.c
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irq_64.c
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irq_work.c
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irq.c
Merge tag 'x86-irq-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-02-10 17:39:08 -08:00
irqflags.S
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irqinit.c
x86/fred: Install system vector handlers even if FRED isn't fully enabled
2025-08-18 14:23:08 +02:00
itmt.c
x86/itmt: Add debugfs file to show core priorities
2025-07-07 22:35:51 +02:00
jailhouse.c
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jump_label.c
…
kdebugfs.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kexec-bzimage64.c
crash_dump/dm-crypt: don't print in arch-specific code
2026-04-02 23:36:24 -07:00
kgdb.c
kgdb: update outdated references to kgdb_wait()
2026-04-21 16:41:54 +01:00
ksysfs.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kvm.c
x86/paravirt: Replace io_delay() hook with a bool
2026-03-22 08:43:05 +01:00
kvmclock.c
x86/paravirt: Move paravirt_sched_clock() related code into tsc.c
2026-01-12 18:47:39 +01:00
ldt.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
machine_kexec_32.c
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machine_kexec_64.c
x86/crash: Use set_memory_p() instead of __set_memory_prot()
2026-01-13 15:28:59 +01:00
Makefile
x86/kexec: Disable KCOV instrumentation after load_segments()
2026-03-30 14:15:25 +02:00
mmconf-fam10h_64.c
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module.c
x86/module: Improve relocation error messages
2025-10-14 14:45:21 -07:00
mpparse.c
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msr.c
x86/msr: Add CPU_OUT_OF_SPEC taint name to "unrecognized" pr_warn(msg)
2025-11-05 13:14:42 +01:00
nmi_selftest.c
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nmi.c
x86/kvm/vmx: Move IRQ/NMI dispatch from KVM into x86 core
2026-05-19 20:25:51 +02:00
paravirt-spinlocks.c
x86/pvlocks: Move paravirt spinlock functions into own header
2026-01-13 14:57:45 +01:00
paravirt.c
x86/paravirt: Replace io_delay() hook with a bool
2026-03-22 08:43:05 +01:00
pci-dma.c
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pcspeaker.c
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perf_regs.c
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platform-quirks.c
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pmem.c
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probe_roms.c
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process_32.c
x86/process/32: Use correct type for 'gs' variable in __show_regs() to avoid zero-extension
2026-03-31 09:50:10 +02:00
process_64.c
x86/process/64: Use savesegment() in __show_regs() instead of inline asm
2026-03-31 09:50:10 +02:00
process.c
Merge tag 'x86_tdx_for_6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-10-04 10:01:30 -07:00
process.h
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ptrace.c
x86/ptrace: Use USER_REGSET_NOTE_TYPE() to specify regset note names
2025-07-14 22:27:48 -07:00
pvclock.c
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quirks.c
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reboot_fixups_32.c
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reboot.c
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2026-04-17 07:18:03 -07:00
relocate_kernel_32.S
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relocate_kernel_64.S
x86/kexec: Push kjump return address even for non-kjump kexec
2026-05-08 17:00:12 +02:00
resource.c
pcmcia: remove obsolete host controller drivers
2026-03-30 07:28:13 +02:00
rethook.c
objtool: Remove newlines and tabs from annotation macros
2025-12-03 19:42:37 +01:00
rtc.c
x86: rtc: Drop PNP device check
2026-02-26 18:48:43 +01:00
setup_percpu.c
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setup.c
memblock, treewide: make memblock_free() handle late freeing
2026-04-01 11:20:15 +03:00
sev_verify_cbit.S
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shstk.c
x86/shstk: Prevent deadlock during shstk sigreturn
2026-04-20 22:54:24 +02:00
signal_32.c
x86/entry/vdso: Rename vdso_image_* to vdso*_image
2026-01-13 15:33:20 -08:00
signal_64.c
x86/fred/signal: Prevent immediate repeat of single step trap on return from SIGTRAP handler
2025-06-09 08:50:58 -07:00
signal.c
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smp.c
KVM: x86: Move bulk of emergency virtualizaton logic to virt subsystem
2026-03-04 08:52:49 -08:00
smpboot.c
x86/topo: Fix SNC topology mess
2026-03-04 16:35:09 +01:00
stacktrace.c
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static_call.c
objtool: Remove newlines and tabs from annotation macros
2025-12-03 19:42:37 +01:00
step.c
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sys_ia32.c
fs: fix archiecture-specific compat_ftruncate64
2026-03-23 12:41:57 +01:00
sys_x86_64.c
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tboot.c
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time.c
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tls.c
x86/tls: Clean up 'sel' variable usage in do_set_thread_area()
2026-03-31 09:50:11 +02:00
tls.h
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trace_clock.c
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trace.c
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traps.c
x86/vsyscall: Restore vsyscall=xonly mode under LASS
2026-03-19 15:11:13 -07:00
tsc_msr.c
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tsc_sync.c
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tsc.c
clocksource: Rewrite watchdog code completely
2026-03-20 13:36:32 +01:00
umip.c
x86/traps: Consolidate user fixups in the #GP handler
2026-03-19 15:11:13 -07:00
unwind_frame.c
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unwind_guess.c
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unwind_orc.c
objtool/x86: Reorder ORC register numbering
2026-03-18 09:38:52 +01:00
uprobes.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
verify_cpu.S
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vm86_32.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
vmcore_info_32.c
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vmcore_info_64.c
…
vmlinux.lds.S
kbuild: Split .modinfo out from ELF_DETAILS
2026-02-26 11:50:19 -07:00
vsmp_64.c
x86/paravirt: Remove not needed includes of paravirt.h
2026-01-12 11:26:52 +01:00
x86_init.c
treewide: Update email address
2026-01-11 06:09:11 -10:00