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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-12 00:26:03 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-12 00:26:03 (GMT) |
| commit | 67c707e451e12f59e57bca6cf33b5803cb74b022 (patch) | |
| tree | 0a0166807867a8ca7543dd7f56a5e197efc98bb9 /arch/x86/Kconfig | |
| parent | 463eb8ac337bad30ace10835108a56df5817cc76 (diff) | |
| parent | 0105c8d8334fc941e0297ca6708fa57854114c0e (diff) | |
| download | linux-67c707e451e12f59e57bca6cf33b5803cb74b022.tar.xz | |
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar:
"The main changes in this cycle were:
- code patching and cpu_has cleanups (Borislav Petkov)
- paravirt cleanups (Juergen Gross)
- TSC cleanup (Thomas Gleixner)
- ptrace cleanup (Chen Gang)"
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
arch/x86/kernel/ptrace.c: Remove unused arg_offs_table
x86/mm: Align macro defines
x86/cpu: Provide a config option to disable static_cpu_has
x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros
x86/cpufeature: Cleanup get_cpu_cap()
x86/cpufeature: Move some of the scattered feature bits to x86_capability
x86/paravirt: Remove paravirt ops pmd_update[_defer] and pte_update_defer
x86/paravirt: Remove unused pv_apic_ops structure
x86/tsc: Remove unused tsc_pre_init() hook
x86: Remove unused function cpu_has_ht_siblings()
x86/paravirt: Kill some unused patching functions
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 965fc42..258965d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -349,6 +349,17 @@ config X86_FEATURE_NAMES If in doubt, say Y. +config X86_FAST_FEATURE_TESTS + bool "Fast CPU feature tests" if EMBEDDED + default y + ---help--- + Some fast-paths in the kernel depend on the capabilities of the CPU. + Say Y here for the kernel to patch in the appropriate code at runtime + based on the capabilities of the CPU. The infrastructure for patching + code at runtime takes up some additional space; space-constrained + embedded systems may wish to say N here to produce smaller, slightly + slower code. + config X86_X2APIC bool "Support x2apic" depends on X86_LOCAL_APIC && X86_64 && (IRQ_REMAP || HYPERVISOR_GUEST) |