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3938490e78
Commit e21f8baf8d ("s390/bug: add entry size to the __bug_table section")
changed the __EMIT_BUG() inline assembly to emit mergeable __bug_table
entries. This is at least currently not needed, but causes problems with
the upcoming s390 ld.lld support:
ld.lld: error: drivers/nvme/host/fc.o:(__bug_table): writable SHF_MERGE section is not supported
Therefore revert the change for now.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/all/20240207-s390-lld-and-orphan-warn-v1-0-8a665b3346ab@kernel.org/
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390_BUG_H
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#define _ASM_S390_BUG_H
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#include <linux/compiler.h>
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#ifdef CONFIG_BUG
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __EMIT_BUG(x) do { \
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asm_inline volatile( \
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"0: mc 0,0\n" \
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".section .rodata.str,\"aMS\",@progbits,1\n" \
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"1: .asciz \""__FILE__"\"\n" \
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".previous\n" \
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".section __bug_table,\"aw\"\n" \
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"2: .long 0b-.\n" \
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" .long 1b-.\n" \
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" .short %0,%1\n" \
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" .org 2b+%2\n" \
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".previous\n" \
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: : "i" (__LINE__), \
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"i" (x), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#else /* CONFIG_DEBUG_BUGVERBOSE */
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#define __EMIT_BUG(x) do { \
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asm_inline volatile( \
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"0: mc 0,0\n" \
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".section __bug_table,\"aw\"\n" \
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"1: .long 0b-.\n" \
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" .short %0\n" \
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" .org 1b+%1\n" \
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".previous\n" \
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: : "i" (x), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#endif /* CONFIG_DEBUG_BUGVERBOSE */
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#define BUG() do { \
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__EMIT_BUG(0); \
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unreachable(); \
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} while (0)
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#define __WARN_FLAGS(flags) do { \
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__EMIT_BUG(BUGFLAG_WARNING|(flags)); \
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} while (0)
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#define WARN_ON(x) ({ \
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int __ret_warn_on = !!(x); \
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if (__builtin_constant_p(__ret_warn_on)) { \
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if (__ret_warn_on) \
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__WARN(); \
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} else { \
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if (unlikely(__ret_warn_on)) \
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__WARN(); \
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} \
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unlikely(__ret_warn_on); \
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})
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#define HAVE_ARCH_BUG
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#define HAVE_ARCH_WARN_ON
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#endif /* CONFIG_BUG */
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#include <asm-generic/bug.h>
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#endif /* _ASM_S390_BUG_H */
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