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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 67 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141333.953658117@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
37 lines
1.2 KiB
ArmAsm
37 lines
1.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 - Virtual Open Systems and Columbia University
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* Author: Christoffer Dall <c.dall@virtualopensystems.com>
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*/
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#include <linux/linkage.h>
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.text
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/********************************************************************
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* Call function in Hyp mode
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*
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*
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* unsigned long kvm_call_hyp(void *hypfn, ...);
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*
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* This is not really a variadic function in the classic C-way and care must
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* be taken when calling this to ensure parameters are passed in registers
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* only, since the stack will change between the caller and the callee.
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*
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* Call the function with the first argument containing a pointer to the
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* function you wish to call in Hyp mode, and subsequent arguments will be
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* passed as r0, r1, and r2 (a maximum of 3 arguments in addition to the
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* function pointer can be passed). The function being called must be mapped
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* in Hyp mode (see init_hyp_mode in arch/arm/kvm/arm.c). Return values are
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* passed in r0 (strictly 32bit).
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*
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* The calling convention follows the standard AAPCS:
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* r0 - r3: caller save
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* r12: caller save
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* rest: callee save
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*/
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ENTRY(__kvm_call_hyp)
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hvc #0
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bx lr
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ENDPROC(__kvm_call_hyp)
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