From: Nicholas Piggin Date: Wed, 30 Jun 2021 07:46:20 +0000 (+1000) Subject: powerpc/64s/interrupt: clean up interrupt return labels X-Git-Tag: v5.14-rc1~104^2~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c59458b00aec4ba580d9628d36d6c984af94d192;p=thirdparty%2Fkernel%2Flinux.git powerpc/64s/interrupt: clean up interrupt return labels Normal kernel-interrupt exits can get interrupt_return_srr_user_restart in their backtrace, which is an unusual and notable function, and it is part of the user-interrupt exit path, which is doubly confusing. Add non-local labels for both user and kernel interrupt exit cases to address this and make the user and kernel cases more symmetric. Also get rid of an unused label. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210630074621.2109197-9-npiggin@gmail.com --- diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index 5c18362693feb..c4336e2e2ce89 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -509,7 +509,9 @@ interrupt_return_\srr\(): _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()) ld r4,_MSR(r1) andi. r0,r4,MSR_PR - beq .Lkernel_interrupt_return_\srr + beq interrupt_return_\srr\()_kernel +interrupt_return_\srr\()_user: /* make backtraces match the _kernel variant */ +_ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_user) addi r3,r1,STACK_FRAME_OVERHEAD bl interrupt_exit_user_prepare cmpdi r3,0 @@ -623,8 +625,8 @@ RESTART_TABLE(.Linterrupt_return_\srr\()_user_rst_start, .Linterrupt_return_\srr #endif .balign IFETCH_ALIGN_BYTES -.Lkernel_interrupt_return_\srr\(): -.Linterrupt_return_\srr\()_kernel: +interrupt_return_\srr\()_kernel: +_ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel) addi r3,r1,STACK_FRAME_OVERHEAD bl interrupt_exit_kernel_prepare