linux-kernel - [patch V2 28/30] x86/fpu: Mop up the internal.h leftovers

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Message-ID: <20211015011539.948837194@linutronix.de>
Date:   Fri, 15 Oct 2021 03:16:38 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, "Chang S. Bae" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        "Liu, Jing2" <jing2.liu@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [patch V2 28/30] x86/fpu: Mop up the internal.h leftovers

Move the global interfaces to api.h and the rest into the core.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/include/asm/fpu/api.h      | 10 ++++++++++
 arch/x86/include/asm/fpu/internal.h | 18 ------------------
 arch/x86/kernel/fpu/init.c          |  1 +
 arch/x86/kernel/fpu/xstate.h        |  3 +++
 4 files changed, 14 insertions(+), 18 deletions(-)
---
diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h
index 764f3ae028c1..b68d8ce599e4 100644
--- a/arch/x86/include/asm/fpu/api.h
+++ b/arch/x86/include/asm/fpu/api.h
@@ -110,6 +110,16 @@ extern int cpu_has_xfeatures(u64 xfeatures_mask, const char **feature_name);
 
 static inline void update_pasid(void) { }
 
+/* Trap handling */
+extern int  fpu__exception_code(struct fpu *fpu, int trap_nr);
+extern void fpu_sync_fpstate(struct fpu *fpu);
+
+/* Boot, hotplug and resume */
+extern void fpu__init_cpu(void);
+extern void fpu__init_system(struct cpuinfo_x86 *c);
+extern void fpu__init_check_bugs(void);
+extern void fpu__resume_cpu(void);
+
 #ifdef CONFIG_MATH_EMULATION
 extern void fpstate_init_soft(struct swregs_state *soft);
 #else
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
index 8f97d3e375de..8df83e887ff6 100644
--- a/arch/x86/include/asm/fpu/internal.h
+++ b/arch/x86/include/asm/fpu/internal.h
@@ -23,22 +23,4 @@
 #include <asm/cpufeature.h>
 #include <asm/trace/fpu.h>
 
-/*
- * High level FPU state handling functions:
- */
-extern void fpu__clear_user_states(struct fpu *fpu);
-extern int  fpu__exception_code(struct fpu *fpu, int trap_nr);
-
-extern void fpu_sync_fpstate(struct fpu *fpu);
-
-/*
- * Boot time FPU initialization functions:
- */
-extern void fpu__init_cpu(void);
-extern void fpu__init_system_xstate(void);
-extern void fpu__init_cpu_xstate(void);
-extern void fpu__init_system(struct cpuinfo_x86 *c);
-extern void fpu__init_check_bugs(void);
-extern void fpu__resume_cpu(void);
-
 #endif /* _ASM_X86_FPU_INTERNAL_H */
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index e77084a6ae7c..d420d29e58be 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -12,6 +12,7 @@
 
 #include "internal.h"
 #include "legacy.h"
+#include "xstate.h"
 
 /*
  * Initialize the registers found in all CPUs, CR0 and CR4:
diff --git a/arch/x86/kernel/fpu/xstate.h b/arch/x86/kernel/fpu/xstate.h
index ae61baa97682..bb6d7d298d2a 100644
--- a/arch/x86/kernel/fpu/xstate.h
+++ b/arch/x86/kernel/fpu/xstate.h
@@ -18,6 +18,9 @@ static inline void xstate_init_xcomp_bv(struct xregs_state *xsave, u64 mask)
 extern void __copy_xstate_to_uabi_buf(struct membuf to, struct xregs_state *xsave,
 				      u32 pkru_val, enum xstate_copy_mode copy_mode);
 
+extern void fpu__init_cpu_xstate(void);
+extern void fpu__init_system_xstate(void);
+
 /* XSAVE/XRSTOR wrapper functions */
 
 #ifdef CONFIG_X86_64