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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-06-30 17:46:20 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-30 22:21:20 +1000 |
| commit | c59458b00aec4ba580d9628d36d6c984af94d192 (patch) | |
| tree | 598752cc2f1f673dd87530ee43b0ba402d51ae21 /arch | |
| parent | 98798f33c6be5a511ab61958b40835b3ef08def2 (diff) | |
| download | linux-c59458b00aec4ba580d9628d36d6c984af94d192.tar.gz linux-c59458b00aec4ba580d9628d36d6c984af94d192.tar.bz2 linux-c59458b00aec4ba580d9628d36d6c984af94d192.zip | |
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 <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210630074621.2109197-9-npiggin@gmail.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/interrupt_64.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index 5c18362693fe..c4336e2e2ce8 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 |