Commit 2f27b503 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Borislav Petkov
Browse files

x86/fpu: Remove fpu::state 



All users converted. Remove it along with the sanity checks.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211013145322.765063318@linutronix.de
parent 63d6bdf3

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

+7 −11
Original line number Diff line number Diff line
@@ -352,20 +352,16 @@ struct fpu { 
	struct fpstate			*fpstate;



	/*

	 * @state:

	 * @__fpstate:

	 *

	 * In-memory copy of all FPU registers that we save/restore

	 * over context switches. If the task is using the FPU then

	 * the registers in the FPU are more recent than this state

	 * copy. If the task context-switches away then they get

	 * saved here and represent the FPU state.

	 * Initial in-memory storage for FPU registers which are saved in

	 * context switch and when the kernel uses the FPU. The registers

	 * are restored from this storage on return to user space if they

	 * are not longer containing the tasks FPU register state.

	 */

	union {

	struct fpstate			__fpstate;

		union fpregs_state		state;

	};

	/*

	 * WARNING: 'state' is dynamically-sized.  Do not put

	 * WARNING: '__fpstate' is dynamically-sized.  Do not put

	 * anything after it here.

	 */

};

arch/x86/kernel/fpu/init.c

+0 −4
Original line number Diff line number Diff line
@@ -184,10 +184,6 @@ static void __init fpu__init_task_struct_size(void) 
	CHECK_MEMBER_AT_END_OF(struct thread_struct, fpu);

	CHECK_MEMBER_AT_END_OF(struct task_struct, thread);



	BUILD_BUG_ON(sizeof(struct fpstate) != sizeof(union fpregs_state));

	BUILD_BUG_ON(offsetof(struct thread_struct, fpu.state) !=

		     offsetof(struct thread_struct, fpu.__fpstate));



	arch_task_struct_size = task_size;

}