diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-07-08 16:37:06 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-07-17 16:42:44 +1000 |
| commit | 9baaef0a22c82a6c5d85b7535240e778c06e5b20 (patch) | |
| tree | 8409aaa1733fc19b6a80333c95a37c7a5ca54d0a /arch/powerpc/kernel/exceptions-64s.S | |
| parent | b88d4bce2b883e7f357ecf8f0cae070b9732f82b (diff) | |
powerpc/irq: Add support for HV virtualization interrupts
This will be delivering external interrupts from the XIVE to the
Hypervisor. We treat it as a normal external interrupt for the
lazy irq disable code (so it will be replayed as a 0x500) and
route it to do_IRQ.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 38340315a143..6200e4925d26 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -331,6 +331,12 @@ hv_doorbell_trampoline: EXCEPTION_PROLOG_0(PACA_EXGEN) b h_doorbell_hv + . = 0xea0 +hv_virt_irq_trampoline: + SET_SCRATCH0(r13) + EXCEPTION_PROLOG_0(PACA_EXGEN) + b h_virt_irq_hv + /* We need to deal with the Altivec unavailable exception * here which is at 0xf20, thus in the middle of the * prolog code of the PerformanceMonitor one. A little @@ -581,6 +587,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR) MASKABLE_EXCEPTION_HV_OOL(0xe82, h_doorbell) KVM_HANDLER(PACA_EXGEN, EXC_HV, 0xe82) + MASKABLE_EXCEPTION_HV_OOL(0xea2, h_virt_irq) + KVM_HANDLER(PACA_EXGEN, EXC_HV, 0xea2) + /* moved from 0xf00 */ STD_EXCEPTION_PSERIES_OOL(0xf00, performance_monitor) KVM_HANDLER(PACA_EXGEN, EXC_STD, 0xf00) @@ -660,6 +669,8 @@ _GLOBAL(__replay_interrupt) BEGIN_FTR_SECTION cmpwi r3,0xe80 beq h_doorbell_common + cmpwi r3,0xea0 + beq h_virt_irq_common FTR_SECTION_ELSE cmpwi r3,0xa00 beq doorbell_super_common @@ -734,6 +745,7 @@ kvmppc_skip_Hinterrupt: #else STD_EXCEPTION_COMMON_ASYNC(0xe80, h_doorbell, unknown_exception) #endif + STD_EXCEPTION_COMMON_ASYNC(0xea0, h_virt_irq, do_IRQ) STD_EXCEPTION_COMMON_ASYNC(0xf00, performance_monitor, performance_monitor_exception) STD_EXCEPTION_COMMON(0x1300, instruction_breakpoint, instruction_breakpoint_exception) STD_EXCEPTION_COMMON(0x1502, denorm, unknown_exception) @@ -852,6 +864,12 @@ h_doorbell_relon_trampoline: EXCEPTION_PROLOG_0(PACA_EXGEN) b h_doorbell_relon_hv + . = 0x4ea0 +h_virt_irq_relon_trampoline: + SET_SCRATCH0(r13) + EXCEPTION_PROLOG_0(PACA_EXGEN) + b h_virt_irq_relon_hv + . = 0x4f00 performance_monitor_relon_pseries_trampoline: SET_SCRATCH0(r13) @@ -1109,6 +1127,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) /* Equivalents to the above handlers for relocation-on interrupt vectors */ STD_RELON_EXCEPTION_HV_OOL(0xe40, emulation_assist) MASKABLE_RELON_EXCEPTION_HV_OOL(0xe80, h_doorbell) + MASKABLE_RELON_EXCEPTION_HV_OOL(0xea0, h_virt_irq) STD_RELON_EXCEPTION_PSERIES_OOL(0xf00, performance_monitor) STD_RELON_EXCEPTION_PSERIES_OOL(0xf20, altivec_unavailable) |