x86/fpu: Clean up CPU feature tests

Further disintegration of internal.h:

Move the CPU feature tests to a core header and remove the unused one.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211015011539.401510559@linutronix.de

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/x86/kernel/fpu/internal.h b/arch/x86/kernel/fpu/internal.h
index 036f84c236dd..a8aac21ba364 100644
--- a/arch/x86/kernel/fpu/internal.h
+++ b/arch/x86/kernel/fpu/internal.h
@@ -2,6 +2,17 @@
 #ifndef __X86_KERNEL_FPU_INTERNAL_H
 #define __X86_KERNEL_FPU_INTERNAL_H
 
+/* CPU feature check wrappers */
+static __always_inline __pure bool use_xsave(void)
+{
+	return cpu_feature_enabled(X86_FEATURE_XSAVE);
+}
+
+static __always_inline __pure bool use_fxsr(void)
+{
+	return cpu_feature_enabled(X86_FEATURE_FXSR);
+}
+
 /* Init functions */
 extern void fpu__init_prepare_fx_sw_frame(void);