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From: Eric Farman <farman@linux.ibm.com>
To: Halil Pasic <pasic@linux.ibm.com>,
	Cornelia Huck <cohuck@redhat.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Thomas Huth <thuth@redhat.com>
Cc: Eric Farman <farman@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	David Hildenbrand <david@redhat.com>,
	Richard Henderson <richard.henderson@linaro.org>,
	qemu-devel@nongnu.org, qemu-s390x@nongnu.org
Subject: [RFC PATCH v1 2/2] s390x/kvm: Pass SIGP Stop flags
Date: Fri,  8 Oct 2021 22:38:11 +0200	[thread overview]
Message-ID: <20211008203811.1980478-3-farman@linux.ibm.com> (raw)
In-Reply-To: <20211008203811.1980478-1-farman@linux.ibm.com>

When building a Stop IRQ to pass to KVM, we should incorporate
the flags if handling the SIGP Stop and Store Status order.
With that, KVM can reject other orders that are submitted for
the same CPU while the operation is fully processed.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
---
 target/s390x/kvm/kvm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 5b1fdb55c4..701b9ddc88 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -2555,6 +2555,10 @@ void kvm_s390_stop_interrupt(S390CPU *cpu)
         .type = KVM_S390_SIGP_STOP,
     };
 
+    if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
+        irq.u.stop.flags = KVM_S390_STOP_FLAG_STORE_STATUS;
+    }
+
     kvm_s390_vcpu_interrupt(cpu, &irq);
 }
 
-- 
2.25.1



  parent reply	other threads:[~2021-10-08 20:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-08 20:38 [RFC PATCH v1 0/2] Improvements to SIGP handling [QEMU] Eric Farman
2021-10-08 20:38 ` [RFC PATCH v1 1/2] s390x: sigp: Force Set Architecture to return Invalid Parameter Eric Farman
2021-10-09  5:40   ` Thomas Huth
2021-10-11  7:04   ` David Hildenbrand
2021-10-08 20:38 ` Eric Farman [this message]
2021-10-11  7:09   ` [RFC PATCH v1 2/2] s390x/kvm: Pass SIGP Stop flags David Hildenbrand
2021-10-11  8:40     ` Christian Borntraeger
2021-10-11  9:21       ` David Hildenbrand
2021-10-11 17:58         ` Eric Farman
2021-10-11 18:07           ` David Hildenbrand
2021-10-12  6:58 ` [RFC PATCH v1 0/2] Improvements to SIGP handling [QEMU] Thomas Huth

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