From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: borntraeger@de.ibm.com, frankja@linux.ibm.com, thuth@redhat.com,
pasic@linux.ibm.com, david@redhat.com,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
scgl@linux.ibm.com, seiden@linux.ibm.com, nrb@linux.ibm.com
Subject: [PATCH v13 6/6] KVM: s390: pv: module parameter to fence asynchronous destroy
Date: Wed, 10 Aug 2022 14:56:25 +0200 [thread overview]
Message-ID: <20220810125625.45295-7-imbrenda@linux.ibm.com> (raw)
In-Reply-To: <20220810125625.45295-1-imbrenda@linux.ibm.com>
Add the module parameter "async_destroy", to allow the asynchronous
destroy mechanism to be switched off. This might be useful for
debugging purposes.
The parameter is enabled by default since the feature is opt-in anyway.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
---
arch/s390/kvm/kvm-s390.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 4a20a6be6601..8c7af96c4546 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -209,7 +209,13 @@ unsigned int diag9c_forwarding_hz;
module_param(diag9c_forwarding_hz, uint, 0644);
MODULE_PARM_DESC(diag9c_forwarding_hz, "Maximum diag9c forwarding per second, 0 to turn off");
-static int async_destroy;
+/*
+ * allow asynchronous deinit for protected guests; enable by default since
+ * the feature is opt-in anyway
+ */
+static int async_destroy = 1;
+module_param(async_destroy, int, 0444);
+MODULE_PARM_DESC(async_destroy, "Asynchronous destroy for protected guests");
/*
* For now we handle at most 16 double words as this is what the s390 base
--
2.37.1
prev parent reply other threads:[~2022-08-10 12:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 12:56 [PATCH v13 0/6] KVM: s390: pv: implement lazy destroy for reboot Claudio Imbrenda
2022-08-10 12:56 ` [PATCH v13 1/6] KVM: s390: pv: asynchronous " Claudio Imbrenda
2022-08-11 16:26 ` Janosch Frank
2022-08-12 14:02 ` Claudio Imbrenda
2022-08-12 11:16 ` Nico Boehr
2022-08-10 12:56 ` [PATCH v13 2/6] KVM: s390: pv: api documentation for asynchronous destroy Claudio Imbrenda
2022-08-19 9:33 ` Janosch Frank
2022-08-10 12:56 ` [PATCH v13 3/6] KVM: s390: pv: add KVM_CAP_S390_PROTECTED_ASYNC_DISABLE Claudio Imbrenda
2022-08-10 12:56 ` [PATCH v13 4/6] KVM: s390: pv: avoid export before import if possible Claudio Imbrenda
2022-08-19 9:50 ` Janosch Frank
2022-08-10 12:56 ` [PATCH v13 5/6] KVM: s390: pv: support for Destroy fast UVC Claudio Imbrenda
2022-08-12 12:56 ` Nico Boehr
2022-08-19 10:01 ` Janosch Frank
2022-08-10 12:56 ` Claudio Imbrenda [this message]
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