Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.10 5/7] MIPS: Clear Cause.BD in instruction_pointer_set | Date | Thu, 29 Feb 2024 10:51:09 -0500 |
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From: Jiaxun Yang <jiaxun.yang@flygoat.com>
[ Upstream commit 9d6e21ddf20293b3880ae55b9d14de91c5891c59 ]
Clear Cause.BD after we use instruction_pointer_set to override EPC.
This can prevent exception_epc check against instruction code at new return address. It won't be considered as "in delay slot" after epc being overridden anyway.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/mips/include/asm/ptrace.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h index 1e76774b36ddf..2849a9b65a055 100644 --- a/arch/mips/include/asm/ptrace.h +++ b/arch/mips/include/asm/ptrace.h @@ -60,6 +60,7 @@ static inline void instruction_pointer_set(struct pt_regs *regs, unsigned long val) { regs->cp0_epc = val; + regs->cp0_cause &= ~CAUSEF_BD; } /* Query offset/name of register from its name/offset */ -- 2.43.0
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