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authorPavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>2015-09-17 19:24:11 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2015-09-25 12:04:44 +0200
commita4fc321219cc1c6bd5ca1262cdbbb2e8cee8d56e (patch)
treedac51c285ae87e063bf1ff588c7ce537b7d06bc9 /target-i386
parent6220e900bcdc524a175b2d2e725ebb9bb11a0008 (diff)
i386: interrupt poll processing
This patch updates x86_cpu_exec_interrupt function. It can process two interrupt request at a time (poll and another one). This makes its execution non-deterministic. Determinism is requred for recorded icount execution. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20150917162410.8676.13042.stgit@PASHA-ISP.def.inno> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target-i386')
-rw-r--r--target-i386/seg_helper.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/target-i386/seg_helper.c b/target-i386/seg_helper.c
index 1a3a2e7573..1cbe559366 100644
--- a/target-i386/seg_helper.c
+++ b/target-i386/seg_helper.c
@@ -1321,6 +1321,9 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
if (interrupt_request & CPU_INTERRUPT_POLL) {
cs->interrupt_request &= ~CPU_INTERRUPT_POLL;
apic_poll_irq(cpu->apic_state);
+ /* Don't process multiple interrupt requests in a single call.
+ This is required to make icount-driven execution deterministic. */
+ return true;
}
#endif
if (interrupt_request & CPU_INTERRUPT_SIPI) {