From c01b916658150e98f00a4981750c37a3224c8735 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Mon, 8 Feb 2021 15:10:31 +0000 Subject: [PATCH] powerpc/syscall: Change condition to check MSR_RI In system_call_exception(), MSR_RI also needs to be checked on 8xx. Only booke and 40x doesn't have MSR_RI. Signed-off-by: Christophe Leroy Reviewed-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/67820fada8dd6a8fe9d7b666f175d4cc9d8de87e.1612796617.git.christophe.leroy@csgroup.eu --- arch/powerpc/kernel/interrupt.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c index 1a2dec49f811..107ec39f05cb 100644 --- a/arch/powerpc/kernel/interrupt.c +++ b/arch/powerpc/kernel/interrupt.c @@ -39,7 +39,7 @@ notrace long system_call_exception(long r3, long r4, long r5, trace_hardirqs_off(); /* finish reconciling */ - if (IS_ENABLED(CONFIG_PPC_BOOK3S)) + if (!IS_ENABLED(CONFIG_BOOKE) && !IS_ENABLED(CONFIG_40x)) BUG_ON(!(regs->msr & MSR_RI)); BUG_ON(!(regs->msr & MSR_PR)); BUG_ON(!FULL_REGS(regs)); @@ -338,7 +338,7 @@ notrace unsigned long interrupt_exit_user_prepare(struct pt_regs *regs, unsigned unsigned long flags; unsigned long ret = 0; - if (IS_ENABLED(CONFIG_PPC_BOOK3S)) + if (!IS_ENABLED(CONFIG_BOOKE) && !IS_ENABLED(CONFIG_40x)) BUG_ON(!(regs->msr & MSR_RI)); BUG_ON(!(regs->msr & MSR_PR)); BUG_ON(!FULL_REGS(regs)); @@ -436,7 +436,8 @@ notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs, unsign unsigned long amr; #endif - if (IS_ENABLED(CONFIG_PPC_BOOK3S) && unlikely(!(regs->msr & MSR_RI))) + if (!IS_ENABLED(CONFIG_BOOKE) && !IS_ENABLED(CONFIG_40x) && + unlikely(!(regs->msr & MSR_RI))) unrecoverable_exception(regs); BUG_ON(regs->msr & MSR_PR); BUG_ON(!FULL_REGS(regs));