linux-stable/arch/x86/kernel/tls.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Internal declarations for x86 TLS implementation functions.
 *
 * Copyright (C) 2007 Red Hat, Inc.  All rights reserved.
 *
 * Red Hat Author: Roland McGrath.
 */

#ifndef _ARCH_X86_KERNEL_TLS_H

#include <linux/regset.h>

extern user_regset_active_fn regset_tls_active;
extern user_regset_get2_fn regset_tls_get;
extern user_regset_set_fn regset_tls_set;

#endif	/* _ARCH_X86_KERNEL_TLS_H */
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193 Based on 1 normalized pattern(s): this copyrighted material is made available to anyone wishing to use modify copy or redistribute it subject to the terms and conditions of the gnu general public license v 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 45 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.342746075@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-28 16:57:20 +00:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
x86: x86 user_regset TLS This adds accessor functions in the user_regset style for the TLS data. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 2008-01-30 12:31:52 +00:00			`/*`
			`* Internal declarations for x86 TLS implementation functions.`
			`*`
			`* Copyright (C) 2007 Red Hat, Inc. All rights reserved.`
			`*`
			`* Red Hat Author: Roland McGrath.`
			`*/`

			`#ifndef _ARCH_X86_KERNEL_TLS_H`

			`#include <linux/regset.h>`

			`extern user_regset_active_fn regset_tls_active;`
x86: switch to ->regset_get() All instances of ->get() in arch/x86 switched; that might or might not be worth splitting up. Notes: * for xstateregs_get() the amount we want to store is determined at the boot time; see init_xstate_size() and update_regset_xstate_info() for details. task->thread.fpu.state.xsave ends with a flexible array member and the amount of data in it depends upon the FPU features supported/enabled. * fpregs_get() writes slightly less than full ->thread.fpu.state.fsave (the last word is not copied); we pass the full size of state.fsave and let membuf_write() trim to the amount declared by regset - __regset_get() will make sure that the space in buffer is no more than that. * copy_xstate_to_user() and its helpers are gone now. * fpregs_soft_get() was getting user_regset_copyout() arguments wrong. Since "x86: x86 user_regset math_emu" back in 2008... I really doubt that it's worth splitting out for -stable, though - you need a 486SX box for that to trigger... [Kevin's braino fix for copy_xstate_to_kernel() essentially duplicated here] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2020-02-18 17:14:34 +00:00			`extern user_regset_get2_fn regset_tls_get;`
x86: x86 user_regset TLS This adds accessor functions in the user_regset style for the TLS data. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 2008-01-30 12:31:52 +00:00			`extern user_regset_set_fn regset_tls_set;`

			`#endif /* _ARCH_X86_KERNEL_TLS_H */`