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b6a50cddbc
linux/arch/x86/kernel
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Yazen Ghannam b6a50cddbc x86/cpu/AMD: Clean up cpu_llc_id assignment per topology feature 
These changes do not affect current hw - just a cleanup:

Currently, we assume that a system has a single Last Level Cache (LLC)
per node, and that the cpu_llc_id is thus equal to the node_id. This no
longer applies since Fam17h can have multiple last level caches within a
node.

So group the cpu_llc_id assignment by topology feature and family in
order to make the computation of cpu_llc_id on the different families
more clear.

Here is how the LLC ID is being computed on the different families:

The NODEID_MSR feature only applies to Fam10h in which case the LLC is
at the node level.

The TOPOEXT feature is used on families 15h, 16h and 17h. So far we only
see multiple last level caches if L3 caches are available. Otherwise,
the cpu_llc_id will default to be the phys_proc_id.

We have L3 caches only on families 15h and 17h:

 - on Fam15h, the LLC is at the node level.

 - on Fam17h, the LLC is at the core complex level and can be found by
   right shifting the APIC ID. Also, keep the family checks explicit so that
   new families will fall back to the default, which will be node_id for
   TOPOEXT systems.

Single node systems in families 10h and 15h will have a Node ID of 0
which will be the same as the phys_proc_id, so we don't need to check
for multiple nodes before using the node_id.

Tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
[ Rewrote the commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20161108153054.bs3sajbyevq6a6uu@pd.tnic
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-09 17:07:43 +01:00
..
acpi ACPI/PCI: pci_link: penalize SCI correctly 2016-10-24 14:18:14 +02:00
apic Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-10 10:59:07 -07:00
cpu x86/cpu/AMD: Clean up cpu_llc_id assignment per topology feature 2016-11-09 17:07:43 +01:00
fpu x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS features 2016-10-19 17:37:13 +02:00
kprobes kprobes: Unpoison stack in jprobe_return() for KASAN 2016-10-16 11:02:31 +02:00
.gitignore
alternative.c x86/asm: Stop depending on ptrace.h in alternative.h 2016-04-29 11:56:40 +02:00
amd_gart_64.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
amd_nb.c Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-08-01 14:23:42 -04:00
apb_timer.c x86/apb_timer: Convert to hotplug state machine 2016-07-15 10:40:22 +02:00
aperture_64.c param: convert some "on"/"off" users to strtobool 2016-03-17 15:09:34 -07:00
apm_32.c x86/apm32: Remove paravirt_enabled() use 2016-04-22 10:29:03 +02:00
asm-offsets_32.c sched/x86: Rewrite the switch_to() code 2016-08-24 12:31:41 +02:00
asm-offsets_64.c sched/x86: Rewrite the switch_to() code 2016-08-24 12:31:41 +02:00
asm-offsets.c x86: Move thread_info into task_struct 2016-09-15 08:25:13 +02:00
audit_64.c
bootflag.c x86: don't use module_init for non-modular core bootflag code 2015-06-16 14:12:34 -04:00
check.c Linux 4.2-rc8 2015-08-25 09:59:19 +02:00
cpuid.c new helpers: no_seek_end_llseek{,_size}() 2015-12-23 10:41:31 -05:00
crash_dump_32.c
crash_dump_64.c
crash.c x86/panic: replace smp_send_stop() with kdump friendly version in panic path 2016-10-11 15:06:32 -07:00
devicetree.c x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage 2016-04-13 11:37:41 +02:00
doublefault.c
dumpstack_32.c x86/dumpstack: Remove dump_trace() and related callbacks 2016-09-20 08:29:34 +02:00
dumpstack_64.c x86/dumpstack: Remove dump_trace() and related callbacks 2016-09-20 08:29:34 +02:00
dumpstack.c x86/dumpstack: Fix show_stack() task pointer regression 2016-09-20 23:36:37 +02:00
e820.c x86/e820: Don't merge consecutive E820_PRAM ranges 2016-10-16 11:16:48 +02:00
early_printk.c x86: Fix misspellings in comments 2016-02-24 08:44:58 +01:00
early-quirks.c Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux 2016-10-11 18:12:22 -07:00
ebda.c x86/boot: Simplify EBDA-vs-BIOS reservation logic 2016-07-22 11:46:01 +02:00
espfix_64.c x86: get rid of superfluous __GFP_REPEAT 2016-06-24 17:23:52 -07:00
ftrace.c ftrace/x86: Implement HAVE_FUNCTION_GRAPH_RET_ADDR_PTR 2016-08-24 12:15:15 +02:00
head32.c x86/boot: Run reserve_bios_regions() after we initialize the memory map 2016-08-11 11:14:59 +02:00
head64.c x86/boot: Run reserve_bios_regions() after we initialize the memory map 2016-08-11 11:14:59 +02:00
head_32.S Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-10-14 14:26:58 -07:00
head_64.S Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-10-14 14:26:58 -07:00
hpet.c x86/hpet: Reduce HPET counter read contention 2016-09-09 15:16:19 +02:00
hw_breakpoint.c x86/kernel: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:41 +02:00
i8237.c
i8253.c x86/kernel: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:41 +02:00
i8259.c x86/irq: Probe for PIC presence before allocating descs for legacy IRQs 2015-11-07 10:37:37 +01:00
io_delay.c x86/kernel: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:41 +02:00
ioport.c x86/iopl: Fix iopl capability check on Xen PV 2016-03-17 09:49:27 +01:00
irq_32.c x86/kernel: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:41 +02:00
irq_64.c x86: Move thread_info into task_struct 2016-09-15 08:25:13 +02:00
irq_work.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
irq.c x86/irq: Do not substract irq_tlb_count from irq_call_count 2016-08-11 11:14:59 +02:00
irqinit.c x86/irq: Store irq descriptor in vector array 2015-08-06 00:14:59 +02:00
jump_label.c x86/asm: Stop depending on ptrace.h in alternative.h 2016-04-29 11:56:40 +02:00
kdebugfs.c x86/kernel: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:41 +02:00
kexec-bzimage64.c x86/e820: Prepare e280 code for switch to dynamic storage 2016-09-21 15:02:12 +02:00
kgdb.c sched/x86: Add 'struct inactive_task_frame' to better document the sleeping task stack frame 2016-08-24 12:27:41 +02:00
ksysfs.c x86: Apply more __ro_after_init and const 2016-08-10 14:55:05 +02:00
kvm.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-03 19:43:08 -07:00
kvmclock.c Merge branch 'linus' into x86/asm, to pick up recent fixes 2016-09-15 08:24:53 +02:00
ldt.c x86/mm: Factor out LDT init from context init 2016-02-18 19:46:31 +01:00
livepatch.c livepatch/x86: apply alternatives and paravirt patches after relocations 2016-08-18 23:41:55 +02:00
machine_kexec_32.c
machine_kexec_64.c kdump, vmcoreinfo: report memory sections virtual addresses 2016-10-11 15:06:33 -07:00
Makefile Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-10-14 14:26:58 -07:00
mcount_64.S x86: Fix export for mcount and __fentry__ 2016-10-26 12:38:17 +02:00
mmconf-fam10h_64.c
module.c x86/asm: Stop depending on ptrace.h in alternative.h 2016-04-29 11:56:40 +02:00
mpparse.c x86/mm/numa: Open code function early_get_boot_cpu_id() 2016-08-15 08:51:54 +02:00
msr.c x86/cpufeature: Carve out X86_FEATURE_* 2016-01-30 11:22:17 +01:00
nmi_selftest.c
nmi.c x86: include linux/ratelimit.h in nmi.c 2016-06-06 17:10:15 +02:00
paravirt_patch_32.c x86, locking/spinlocks: Remove ticket (spin)lock implementation 2016-09-30 10:56:00 +02:00
paravirt_patch_64.c x86, locking/spinlocks: Remove ticket (spin)lock implementation 2016-09-30 10:56:00 +02:00
paravirt-spinlocks.c x86, locking/spinlocks: Remove ticket (spin)lock implementation 2016-09-30 10:56:00 +02:00
paravirt.c x86/asm: Get rid of __read_cr4_safe() 2016-09-30 12:40:12 +02:00
pci-calgary_64.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
pci-dma.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
pci-iommu_table.c x86: Fix non-static inlines 2016-04-16 13:21:40 +02:00
pci-nommu.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
pci-swiotlb.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
pcspeaker.c
perf_regs.c
platform-quirks.c x86/boot: Reorganize and clean up the BIOS area reservation code 2016-07-21 10:11:57 +02:00
pmem.c x86/kernel: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:41 +02:00
probe_roms.c
process_32.c x86/asm: Get rid of __read_cr4_safe() 2016-09-30 12:40:12 +02:00
process_64.c Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-10 11:01:51 -07:00
process.c x86: use simpler API for random address requests 2016-10-11 15:06:32 -07:00
ptrace.c Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-03 17:29:01 -07:00
pvclock.c KVM: x86: introduce get_kvmclock_ns 2016-09-20 09:26:15 +02:00
quirks.c x86/quirks: Hide maybe-uninitialized warning 2016-10-25 11:45:13 +02:00
reboot_fixups_32.c
reboot.c x86: Apply more __ro_after_init and const 2016-08-10 14:55:05 +02:00
relocate_kernel_32.S
relocate_kernel_64.S
resource.c x86/e820: Prepare e280 code for switch to dynamic storage 2016-09-21 15:02:12 +02:00
rtc.c char/genrtc: x86: remove remnants of asm/rtc.h 2016-06-04 00:20:07 +02:00
setup_percpu.c Merge branch 'x86/mm' into x86/asm, to unify the two branches for simplicity 2016-09-08 08:41:52 +02:00
setup.c x86/smpboot: Init apic mapping before usage 2016-10-29 14:00:46 +02:00
signal_compat.c x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi() 2016-10-20 13:05:15 +02:00
signal.c Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-03 17:29:01 -07:00
smp.c Linux 4.9-rc1 2016-10-16 11:31:39 +02:00
smpboot.c x86/cpu: Remove the printk format specifier in "CPU0: " 2016-10-25 11:48:49 +02:00
stacktrace.c x86/stacktrace: Convert save_stack_trace_*() to use the new unwinder 2016-09-20 08:29:33 +02:00
step.c mm: replace access_process_vm() write parameter with gup_flags 2016-10-19 08:31:25 -07:00
sys_x86_64.c x86: use simpler API for random address requests 2016-10-11 15:06:32 -07:00
sysfb_efi.c Merge branch 'linus' into efi/core, to pick up fixes 2016-05-07 07:00:07 +02:00
sysfb_simplefb.c
sysfb.c
tboot.c x86/e820: Prepare e280 code for switch to dynamic storage 2016-09-21 15:02:12 +02:00
tce_64.c x86/cpufeature: Remove cpu_has_clflush 2016-03-31 13:35:09 +02:00
test_nx.c x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option 2016-02-22 08:51:38 +01:00
test_rodata.c x86: Don't use module.h just for AUTHOR / LICENSE tags 2016-07-14 13:04:20 +02:00
time.c
tls.c x86/tls: Synchronize segment registers in set_thread_area() 2016-04-29 11:56:42 +02:00
tls.h
topology.c x86: Drop bogus __ref / __refdata annotations 2015-07-20 18:57:20 +02:00
trace_clock.c x86/asm/tsc: Add rdtsc_ordered() and use it in trivial call sites 2015-07-06 15:23:29 +02:00
tracepoint.c
traps.c x86/mm: Improve stack-overflow #PF handling 2016-09-08 08:47:20 +02:00
tsc_msr.c x86/tsc_msr: Remove irqoff around MSR-based TSC enumeration 2016-07-11 21:30:12 +02:00
tsc_sync.c x86/asm/tsc/sync: Use rdtsc_ordered() in check_tsc_warp() and drop extra barriers 2015-07-06 15:23:29 +02:00
tsc.c x86/tsc: Add additional Intel CPU models to the crystal quirk list 2016-09-20 01:00:32 +02:00
unwind_frame.c x86/unwind: Add new unwind interface and implementations 2016-09-20 08:29:33 +02:00
unwind_guess.c x86/unwind: Fix empty stack dereference in guess unwinder 2016-10-25 11:36:43 +02:00
uprobes.c uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructions 2016-08-12 08:29:24 +02:00
verify_cpu.S x86/cpufeature: Carve out X86_FEATURE_* 2016-01-30 11:22:17 +01:00
vm86_32.c x86, bitops: remove use of "sbb" to return CF 2016-06-08 12:41:20 -07:00
vmlinux.lds.S nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
vsmp_64.c x86: replace __init_or_module with __init in non-modular vsmp_64.c 2015-06-16 14:12:41 -04:00
x86_init.c x86: Apply more __ro_after_init and const 2016-08-10 14:55:05 +02:00