This is not an exception handler as such: it's called from local_irq_enable(), not exception entry.
Also clean up some now redundant comments at the end of the consolidation series. Signed-off-by: Nicholas Piggin <npig...@gmail.com> --- arch/powerpc/kernel/exceptions-64s.S | 99 +++++++++++++----------------------- 1 file changed, 36 insertions(+), 63 deletions(-) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 9f96ec2..69a2379 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1319,42 +1319,6 @@ USE_FIXED_SECTION(virt_trampolines) MASKED_INTERRUPT(H) UNUSE_FIXED_SECTION(virt_trampolines) -/* - * Called from arch_local_irq_enable when an interrupt needs - * to be resent. r3 contains 0x500, 0x900, 0xa00 or 0xe80 to indicate - * which kind of interrupt. MSR:EE is already off. We generate a - * stackframe like if a real interrupt had happened. - * - * Note: While MSR:EE is off, we need to make sure that _MSR - * in the generated frame has EE set to 1 or the exception - * handler will not properly re-enable them. - */ -_GLOBAL(__replay_interrupt) - /* We are going to jump to the exception common code which - * will retrieve various register values from the PACA which - * we don't give a damn about, so we don't bother storing them. - */ - mfmsr r12 - mflr r11 - mfcr r9 - ori r12,r12,MSR_EE - cmpwi r3,0x900 - beq decrementer_common - cmpwi r3,0x500 - beq hardware_interrupt_common -BEGIN_FTR_SECTION - cmpwi r3,0xe80 - beq h_doorbell_common - cmpwi r3,0xea0 - beq h_virt_irq_common - cmpwi r3,0xe60 - beq hmi_exception_common -FTR_SECTION_ELSE - cmpwi r3,0xa00 - beq doorbell_super_common -ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) - blr - #ifdef CONFIG_KVM_BOOK3S_64_HANDLER TRAMP_HANDLER_BEGIN(kvmppc_skip_interrupt) /* @@ -1383,37 +1347,10 @@ TRAMP_HANDLER_BEGIN(kvmppc_skip_Hinterrupt) TRAMP_HANDLER_END(kvmppc_skip_Hinterrupt) #endif -/* - * Ensure that any handlers that get invoked from the exception prologs - * above are below the first 64KB (0x10000) of the kernel image because - * the prologs assemble the addresses of these handlers using the - * LOAD_HANDLER macro, which uses an ori instruction. - */ - -/*** Common interrupt handlers ***/ - - - /* - * Relocation-on interrupts: A subset of the interrupts can be delivered - * with IR=1/DR=1, if AIL==2 and MSR.HV won't be changed by delivering - * it. Addresses are the same as the original interrupt addresses, but - * offset by 0xc000000000004000. - * It's impossible to receive interrupts below 0x300 via this mechanism. - * KVM: None of these traps are from the guest ; anything that escalated - * to HV=1 from HV=0 is delivered via real mode handlers. - */ - - /* - * This uses the standard macro, since the original 0x300 vector - * only has extra guff for STAB-based processors -- which never - * come here. - */ - TRAMP_HANDLER_BEGIN(ppc64_runlatch_on_trampoline) b __ppc64_runlatch_on TRAMP_HANDLER_END(ppc64_runlatch_on_trampoline) - /* Equivalents to the above handlers for relocation-on interrupt vectors */ USE_FIXED_SECTION(virt_trampolines) /* * The __end_interrupts marker must be past the out-of-line (OOL) @@ -1589,3 +1526,39 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR) 1: addi r3,r1,STACK_FRAME_OVERHEAD bl kernel_bad_stack b 1b + +/* + * Called from arch_local_irq_enable when an interrupt needs + * to be resent. r3 contains 0x500, 0x900, 0xa00 or 0xe80 to indicate + * which kind of interrupt. MSR:EE is already off. We generate a + * stackframe like if a real interrupt had happened. + * + * Note: While MSR:EE is off, we need to make sure that _MSR + * in the generated frame has EE set to 1 or the exception + * handler will not properly re-enable them. + */ +_GLOBAL(__replay_interrupt) + /* We are going to jump to the exception common code which + * will retrieve various register values from the PACA which + * we don't give a damn about, so we don't bother storing them. + */ + mfmsr r12 + mflr r11 + mfcr r9 + ori r12,r12,MSR_EE + cmpwi r3,0x900 + beq decrementer_common + cmpwi r3,0x500 + beq hardware_interrupt_common +BEGIN_FTR_SECTION + cmpwi r3,0xe80 + beq h_doorbell_common + cmpwi r3,0xea0 + beq h_virt_irq_common + cmpwi r3,0xe60 + beq hmi_exception_common +FTR_SECTION_ELSE + cmpwi r3,0xa00 + beq doorbell_super_common +ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) + blr -- 2.9.3