forked from Minki/linux
e8c328d7de
The return values of fixup_exception() and arm64_bpf_fixup_exception() represent a boolean condition rather than an error code, so for clarity it would be better to return `bool` rather than `int`. This patch adjusts the code accordingly. While we're modifying the prototype, we also remove the unnecessary `extern` keyword, so that this won't look out of place when we make subsequent additions to the header. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: James Morse <james.morse@arm.com> Cc: Jean-Philippe Brucker <jean-philippe@linaro.org> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20211019160219.5202-9-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.org>
23 lines
460 B
C
23 lines
460 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Based on arch/arm/mm/extable.c
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*/
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#include <linux/extable.h>
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#include <linux/uaccess.h>
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bool fixup_exception(struct pt_regs *regs)
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{
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const struct exception_table_entry *fixup;
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fixup = search_exception_tables(instruction_pointer(regs));
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if (!fixup)
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return false;
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if (in_bpf_jit(regs))
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return arm64_bpf_fixup_exception(fixup, regs);
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regs->pc = (unsigned long)&fixup->fixup + fixup->fixup;
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return true;
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}
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