diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-10-15 03:16:21 +0200 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-10-20 15:27:27 +0200 |
| commit | d06241f52cfe4a0580856ef2cfac90dc7f752cae (patch) | |
| tree | 06be585119a29661bf4761507e1f1bab46cd98a3 /arch | |
| parent | x86/fpu: Move context switch and exit to user inlines into sched.h (diff) | |
| download | linux-dev-d06241f52cfe4a0580856ef2cfac90dc7f752cae.tar.xz linux-dev-d06241f52cfe4a0580856ef2cfac90dc7f752cae.zip | |
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
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/fpu/internal.h | 18 | ||||
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/fpu/internal.h | 11 | ||||
| -rw-r--r-- | arch/x86/kernel/fpu/regset.c | 2 |
4 files changed, 14 insertions, 18 deletions
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index 398c87c8e199..5da7528b3b2f 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -51,24 +51,6 @@ extern void fpu__resume_cpu(void); # define WARN_ON_FPU(x) ({ (void)(x); 0; }) #endif -/* - * FPU related CPU feature flag helper routines: - */ -static __always_inline __pure bool use_xsaveopt(void) -{ - return static_cpu_has(X86_FEATURE_XSAVEOPT); -} - -static __always_inline __pure bool use_xsave(void) -{ - return static_cpu_has(X86_FEATURE_XSAVE); -} - -static __always_inline __pure bool use_fxsr(void) -{ - return static_cpu_has(X86_FEATURE_FXSR); -} - extern union fpregs_state init_fpstate; extern void fpstate_init_user(union fpregs_state *state); diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index e6087a61a844..e9b51c75e2c9 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -17,6 +17,7 @@ #include <linux/hardirq.h> #include <linux/pkeys.h> +#include "internal.h" #include "xstate.h" #define CREATE_TRACE_POINTS 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); diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c index 66ed317ebc0d..ccf0c59955f1 100644 --- a/arch/x86/kernel/fpu/regset.c +++ b/arch/x86/kernel/fpu/regset.c @@ -10,6 +10,8 @@ #include <asm/fpu/regset.h> #include <asm/fpu/xstate.h> +#include "internal.h" + /* * The xstateregs_active() routine is the same as the regset_fpregs_active() routine, * as the "regset->n" for the xstate regset will be updated based on the feature |