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Commit d65fcd60 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

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: default avatarIngo Molnar <mingo@kernel.org>
parent 003e2e8b

arch/x86/include/asm/fpu/internal.h

+2 −1
Original line number Diff line number Diff line
@@ -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;

arch/x86/kernel/fpu/xstate.c

+1 −1
Original line number Diff line number Diff line
@@ -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