[PATCH 06/13] powerpc/64s: irq replay external use the HV handler in HV mode on POWER9

[Nicholas Piggin]

POWER9 host external interrupts use the h_virt_irq_common handler, so
use that to replay them rather than using the hardware_interrupt_common
handler. Both call do_IRQ, but using the correct handler reduces i-cache
footprint.

Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
 arch/powerpc/kernel/exceptions-64s.S | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/kernel/exceptions-64s.S 
b/arch/powerpc/kernel/exceptions-64s.S
index f9d0796fb2c9..29253cecf713 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1672,7 +1672,11 @@ _GLOBAL(__replay_interrupt)
        cmpwi   r3,0x900
        beq     decrementer_common
        cmpwi   r3,0x500
+BEGIN_FTR_SECTION
+       beq     h_virt_irq_common
+FTR_SECTION_ELSE
        beq     hardware_interrupt_common
+ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_300)
 BEGIN_FTR_SECTION
        cmpwi   r3,0xa00
        beq     h_doorbell_common_msgclr
-- 
2.11.0