LoongArch: Handle new atomic instructions for probes

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[ Upstream commit db740f5689 ]

The atomic instructions sc.q, llacq.{w/d}, screl.{w/d} were newly added
in the LoongArch Reference Manual v1.10, it is necessary to handle them
in insns_not_supported() to avoid putting a breakpoint in the middle of
a ll/sc atomic sequence, otherwise it will loop forever for kprobes and
uprobes.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Tiezhu Yang 2025-10-02 22:39:35 +08:00 • committed by Greg Kroah-Hartman

parent 76e6561d7b

commit 8effcd6db7

2 changed files with 17 additions and 0 deletions

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5

arch/loongarch/include/asm/inst.h

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12

arch/loongarch/kernel/inst.c

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