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From 4e5854dd33f113e9aa81f7e1a23c50ac21dbefde Mon Sep 17 00:00:00 2001
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Message-Id: <4e5854dd33f113e9aa81f7e1a23c50ac21dbefde@dist-git>
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From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
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Date: Mon, 27 Aug 2018 13:09:38 +0200
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Subject: [PATCH] RHEL: Fix virConnectGetMaxVcpus output
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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https://bugzilla.redhat.com/show_bug.cgi?id=1092363
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RHEL-only.
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Ignore the maximum vcpu limit (KVM_CAP_MAX_VCPUS) on RHEL,
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since RHEL QEMU treats the recommended limit (KVM_CAP_NR_VCPUS)
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as the maximum, see:
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https://bugzilla.redhat.com/show_bug.cgi?id=998708
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(cherry picked from commit 7dff909fa34bdd93ad200dbffe70c0c1ee931925)
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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https: //bugzilla.redhat.com/show_bug.cgi?id=1582222
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Reviewed-by: Andrea Bolognani <abologna@redhat.com>
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---
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src/util/virhostcpu.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/util/virhostcpu.c b/src/util/virhostcpu.c
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index 67b6910626..d5d7d5eae0 100644
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--- a/src/util/virhostcpu.c
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+++ b/src/util/virhostcpu.c
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@@ -1189,6 +1189,11 @@ virHostCPUGetKVMMaxVCPUs(void)
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return -1;
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}
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+/* Ignore KVM_CAP_MAX_VCPUS on RHEL - the recommended maximum
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+ * is treated as a hard limit.
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+ */
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+# undef KVM_CAP_MAX_VCPUS
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+
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# ifdef KVM_CAP_MAX_VCPUS
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/* at first try KVM_CAP_MAX_VCPUS to determine the maximum count */
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if ((ret = ioctl(fd, KVM_CHECK_EXTENSION, KVM_CAP_MAX_VCPUS)) > 0)
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--
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2.34.1
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