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SubjectRe: [PATCH] loongarch: irq: Move to generic_handle_arch_irq
Abandon this patch because of the wrong commit log. Please see
"[RESEND PATCH] loongarch: irq: Move to generic_handle_arch_irq".

On Sat, Aug 13, 2022 at 4:58 PM <guoren@kernel.org> wrote:
>
> From: Guo Ren <guoren@linux.alibaba.com>
>
> No reason to keep custom handle_loongarch_irq, and move to the generic
> one. No reason to keep custom handle_loongarch_irq, and move to the
> generic one. The patch also the fixup HAVE_CONTEXT_TRACKING_USER
> feature, because handle_loongarch_irq missed ct_irq_enter/exit.
>
> Fixes: 0603839b18f4 ("LoongArch: Add exception/interrupt handling")
> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> Signed-off-by: Guo Ren <guoren@kernel.org>
> ---
> arch/loongarch/kernel/traps.c | 15 ++-------------
> 1 file changed, 2 insertions(+), 13 deletions(-)
>
> diff --git a/arch/loongarch/kernel/traps.c b/arch/loongarch/kernel/traps.c
> index aa1c95aaf595..06211640ba1f 100644
> --- a/arch/loongarch/kernel/traps.c
> +++ b/arch/loongarch/kernel/traps.c
> @@ -588,17 +588,6 @@ asmlinkage void cache_parity_error(void)
> panic("Can't handle the cache error!");
> }
>
> -asmlinkage void noinstr handle_loongarch_irq(struct pt_regs *regs)
> -{
> - struct pt_regs *old_regs;
> -
> - irq_enter_rcu();
> - old_regs = set_irq_regs(regs);
> - handle_arch_irq(regs);
> - set_irq_regs(old_regs);
> - irq_exit_rcu();
> -}
> -
> asmlinkage void noinstr do_vint(struct pt_regs *regs, unsigned long sp)
> {
> register int cpu;
> @@ -608,7 +597,7 @@ asmlinkage void noinstr do_vint(struct pt_regs *regs, unsigned long sp)
> cpu = smp_processor_id();
>
> if (on_irq_stack(cpu, sp))
> - handle_loongarch_irq(regs);
> + generic_handle_arch_irq(regs);
> else {
> stack = per_cpu(irq_stack, cpu) + IRQ_STACK_START;
>
> @@ -619,7 +608,7 @@ asmlinkage void noinstr do_vint(struct pt_regs *regs, unsigned long sp)
> "move $s0, $sp \n" /* Preserve sp */
> "move $sp, %[stk] \n" /* Switch stack */
> "move $a0, %[regs] \n"
> - "bl handle_loongarch_irq \n"
> + "bl generic_handle_arch_irq \n"
> "move $sp, $s0 \n" /* Restore sp */
> : /* No outputs */
> : [stk] "r" (stack), [regs] "r" (regs)
> --
> 2.36.1
>


--
Best Regards
Guo Ren

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