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cbdac8413e
Disable CFI checking for functions that switch to linear mapping and make an indirect call to a physical address, since the compiler only understands virtual addresses and the CFI check for such indirect calls would always fail. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210408182843.1754385-15-samitolvanen@google.com
33 lines
805 B
C
33 lines
805 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* CPU reset routines
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*
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* Copyright (C) 2015 Huawei Futurewei Technologies.
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*/
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#ifndef _ARM64_CPU_RESET_H
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#define _ARM64_CPU_RESET_H
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#include <asm/virt.h>
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void __cpu_soft_restart(unsigned long el2_switch, unsigned long entry,
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unsigned long arg0, unsigned long arg1, unsigned long arg2);
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static inline void __noreturn __nocfi cpu_soft_restart(unsigned long entry,
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unsigned long arg0,
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unsigned long arg1,
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unsigned long arg2)
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{
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typeof(__cpu_soft_restart) *restart;
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unsigned long el2_switch = !is_kernel_in_hyp_mode() &&
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is_hyp_mode_available();
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restart = (void *)__pa_symbol(function_nocfi(__cpu_soft_restart));
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cpu_install_idmap();
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restart(el2_switch, entry, arg0, arg1, arg2);
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unreachable();
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}
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#endif
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