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[Qemu-devel] [PATCH v2 10/30] target/s390x: interpret PSW_MASK_WAIT only
From: |
David Hildenbrand |
Subject: |
[Qemu-devel] [PATCH v2 10/30] target/s390x: interpret PSW_MASK_WAIT only for TCG |
Date: |
Thu, 28 Sep 2017 22:36:48 +0200 |
KVM handles the wait PSW itself and triggers a WAIT ICPT in case it
really want to sleep (disabled wait).
This will later allow us to change the order of loading a restart
interrupt and setting a CPU to OPERATING on SIGP RESTART without
changing KVM behavior.
Signed-off-by: David Hildenbrand <address@hidden>
---
target/s390x/helper.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/target/s390x/helper.c b/target/s390x/helper.c
index 2d7df83c59..baa18777f1 100644
--- a/target/s390x/helper.c
+++ b/target/s390x/helper.c
@@ -147,7 +147,8 @@ void load_psw(CPUS390XState *env, uint64_t mask, uint64_t
addr)
s390_cpu_recompute_watchpoints(CPU(s390_env_get_cpu(env)));
}
- if (mask & PSW_MASK_WAIT) {
+ /* KVM will handle all WAITs and trigger a WAIT exit on disabled_wait */
+ if (tcg_enabled() && (mask & PSW_MASK_WAIT)) {
s390_handle_wait(s390_env_get_cpu(env));
}
}
--
2.13.5
- [Qemu-devel] [PATCH v2 00/30] s390x: SMP for TCG, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 01/30] s390x/tcg: turn INTERRUPT_EXT into a mask, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 02/30] s390x/tcg: cleanup service interrupt injection, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 03/30] s390x/tcg: injection of emergency signals and external calls, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 04/30] s390x/tcg: rework checking for deliverable interrupts, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 05/30] s390x/tcg: take care of external interrupt subclasses, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 06/30] s390x/tcg: STOPPED cpus can never wake up, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 07/30] s390x/tcg: a CPU cannot switch state due to an interrupt, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 08/30] target/s390x: factor out handling of WAIT PSW into s390_handle_wait(), David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 09/30] s390x/tcg: handle WAIT PSWs during interrupt injection, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 10/30] target/s390x: interpret PSW_MASK_WAIT only for TCG,
David Hildenbrand <=
- [Qemu-devel] [PATCH v2 11/30] s390x/kvm: pass ipb directly into handle_sigp(), David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 12/30] s390x/kvm: generalize SIGP stop and restart interrupt injection, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 13/30] s390x/kvm: factor out storing of CPU status, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 14/30] s390x/kvm: factor out storing of adtl CPU status, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 15/30] s390x/kvm: drop two debug prints, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 16/30] s390x/kvm: factor out SIGP code into sigp.c, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 17/30] MAINTAINERS: use s390 KVM maintainers for target/s390x/sigp.c, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 18/30] s390x/kvm: factor out actual handling of STOP interrupts, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 20/30] s390x/tcg: implement SIGP SENSE, David Hildenbrand, 2017/09/28
- [Qemu-devel] [PATCH v2 19/30] s390x/tcg: implement SIGP SENSE RUNNING STATUS, David Hildenbrand, 2017/09/28