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[4/7] target/ppc: PMIs are level triggered

Message ID 20240806131318.275109-5-npiggin@gmail.com
State New
Headers show
Series various ppc fixes | expand

Commit Message

Nicholas Piggin Aug. 6, 2024, 1:13 p.m. UTC 
In Book-S / Power processors, the performance monitor interrupts are
driven by the MMCR0[PMAO] bit, which is level triggered and not cleared
by the interrupt.

Others may have different performance monitor architecture, but none of
those are implemented by QEMU.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 target/ppc/excp_helper.c | 4 ----
 1 file changed, 4 deletions(-)
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Patch

diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index f33fc36db2..701abe1b6d 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -2187,7 +2187,6 @@  static void p7_deliver_interrupt(CPUPPCState *env, int interrupt)
         powerpc_excp(cpu, POWERPC_EXCP_DECR);
         break;
     case PPC_INTERRUPT_PERFM:
-        env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
         powerpc_excp(cpu, POWERPC_EXCP_PERFM);
         break;
     case 0:
@@ -2250,7 +2249,6 @@  static void p8_deliver_interrupt(CPUPPCState *env, int interrupt)
         powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
         break;
     case PPC_INTERRUPT_PERFM:
-        env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
         powerpc_excp(cpu, POWERPC_EXCP_PERFM);
         break;
     case PPC_INTERRUPT_EBB: /* EBB exception */
@@ -2330,7 +2328,6 @@  static void p9_deliver_interrupt(CPUPPCState *env, int interrupt)
         powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
         break;
     case PPC_INTERRUPT_PERFM:
-        env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
         powerpc_excp(cpu, POWERPC_EXCP_PERFM);
         break;
     case PPC_INTERRUPT_EBB: /* EBB exception */
@@ -2444,7 +2441,6 @@  static void ppc_deliver_interrupt(CPUPPCState *env, int interrupt)
         powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
         break;
     case PPC_INTERRUPT_PERFM:
-        env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
         powerpc_excp(cpu, POWERPC_EXCP_PERFM);
         break;
     case PPC_INTERRUPT_THERM:  /* Thermal interrupt */