From: Gabe Black <gblack@eecs.umich.edu>
Date: Mon, 13 Oct 2008 06:28:11 +0000 (-0700)
Subject: X86: Implement the EOI register in the local APIC.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bdc28d793dd9b3407c513fba5c24917aa423f7ca;p=gem5.git

X86: Implement the EOI register in the local APIC.
---

diff --git a/src/arch/x86/interrupts.cc b/src/arch/x86/interrupts.cc
index 148b26157..df1b40e5b 100644
--- a/src/arch/x86/interrupts.cc
+++ b/src/arch/x86/interrupts.cc
@@ -330,9 +330,6 @@ X86ISA::Interrupts::readReg(ApicRegIndex reg)
       case APIC_PROCESSOR_PRIORITY:
         panic("Local APIC Processor Priority register unimplemented.\n");
         break;
-      case APIC_EOI:
-        panic("Local APIC EOI register unimplemented.\n");
-        break;
       case APIC_ERROR_STATUS:
         regs[APIC_INTERNAL_STATE] &= ~ULL(0x1);
         break;
@@ -391,8 +388,10 @@ X86ISA::Interrupts::setReg(ApicRegIndex reg, uint32_t val)
         panic("Local APIC Processor Priority register unimplemented.\n");
         break;
       case APIC_EOI:
-        panic("Local APIC EOI register unimplemented.\n");
-        break;
+        // Remove the interrupt that just completed from the local apic state.
+        clearRegArrayBit(APIC_IN_SERVICE_BASE, ISRV);
+        updateISRV();
+        return;
       case APIC_LOGICAL_DESTINATION:
         newVal = val & 0xFF000000;
         break;