From d65fcd608f6a9ac0316bd3efc75956ca329b6571 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Wed, 27 May 2015 14:04:44 +0200
Subject: [PATCH] x86/fpu: Simplify copy_kernel_to_xregs_booting()
copy_kernel_to_xregs_booting() has a second parameter that is the mask
of xfeatures that should be copied - but this parameter is always -1.
Simplify the call site of this function, this also makes it more
similar to the function call signature of other copy_kernel_to*regs()
functions.
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Bobby Powers <bobbypowers@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/include/asm/fpu/internal.h | 3 ++-
arch/x86/kernel/fpu/xstate.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
index 12acbb32a5613..9f38638720073 100644
--- a/arch/x86/include/asm/fpu/internal.h
+++ b/arch/x86/include/asm/fpu/internal.h
@@ -271,8 +271,9 @@ static inline void copy_xregs_to_kernel_booting(struct xregs_state *xstate)
* This function is called only during boot time when x86 caps are not set
* up and alternative can not be used yet.
*/
-static inline void copy_kernel_to_xregs_booting(struct xregs_state *xstate, u64 mask)
+static inline void copy_kernel_to_xregs_booting(struct xregs_state *xstate)
{
+ u64 mask = -1;
u32 lmask = mask;
u32 hmask = mask >> 32;
int err = 0;
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index ad4dd26ebd593..a580eb5c7e528 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -281,7 +281,7 @@ static void __init setup_init_fpu_buf(void)
/*
* Init all the features state with header_bv being 0x0
*/
- copy_kernel_to_xregs_booting(&init_fpstate.xsave, -1);
+ copy_kernel_to_xregs_booting(&init_fpstate.xsave);
/*
* Dump the init state again. This is to identify the init state
--
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