From 6e1315fe82308cd29e7550eab967262e8bbc71a3 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 7 Dec 2015 10:39:42 +0100 Subject: x86/cpu: Provide a config option to disable static_cpu_has This brings .text savings of about ~1.6K when building a tinyconfig. It is off by default so nothing changes for the default. Kconfig help text from Josh. Signed-off-by: Borislav Petkov Reviewed-by: Josh Triplett Link: http://lkml.kernel.org/r/1449481182-27541-5-git-send-email-bp@alien8.de Signed-off-by: Thomas Gleixner --- arch/x86/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/x86/Kconfig') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index db3622f22b61..a2abc2fb6970 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) -- cgit v1.2.3