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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-08-12 02:39:03 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-23 23:13:27 +1000 |
| commit | d6f73fc69bf5837ad0d028d2a40f912921ed839f (patch) | |
| tree | 4261d644befe82741ff2199233924753d683b5cc /arch/powerpc/kernel | |
| parent | 6f881eaeb552ad27b7e8210919c19b7be3d88d9d (diff) | |
| download | linux-d6f73fc69bf5837ad0d028d2a40f912921ed839f.tar.gz linux-d6f73fc69bf5837ad0d028d2a40f912921ed839f.tar.bz2 linux-d6f73fc69bf5837ad0d028d2a40f912921ed839f.zip | |
powerpc/64s: Merge HV and non-HV paths for doorbell IRQ replay
This results in smaller code, and fewer branches. This relies on the
fact that both the 0xe80 and 0xa00 handlers call the same upper level
code, namely doorbell_exception().
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Mention we rely on the implementation of the 0xe80/0xa00 handlers]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 2 |
3 files changed, 2 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index e925c1c99c71..e7bff7f9d08f 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -966,11 +966,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) #ifdef CONFIG_PPC_BOOK3E cmpwi cr0,r3,0x280 #else - BEGIN_FTR_SECTION - cmpwi cr0,r3,0xe80 - FTR_SECTION_ELSE - cmpwi cr0,r3,0xa00 - ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) + cmpwi cr0,r3,0xa00 #endif /* CONFIG_PPC_BOOK3E */ bne 1f addi r3,r1,STACK_FRAME_OVERHEAD; diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 6a6d4d920827..ab1dc98b73d0 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1676,7 +1676,7 @@ _GLOBAL(__replay_interrupt) cmpwi r3,0x500 beq hardware_interrupt_common BEGIN_FTR_SECTION - cmpwi r3,0xe80 + cmpwi r3,0xa00 beq h_doorbell_common_msgclr cmpwi r3,0xea0 beq h_virt_irq_common diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index b5d7c27186bd..4e65bf82f5e0 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -207,8 +207,6 @@ notrace unsigned int __check_irq_replay(void) #else if (happened & PACA_IRQ_DBELL) { local_paca->irq_happened &= ~PACA_IRQ_DBELL; - if (cpu_has_feature(CPU_FTR_HVMODE)) - return 0xe80; return 0xa00; } #endif /* CONFIG_PPC_BOOK3E */ |