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From fbbdbb9f62c7239d8e299b17be82e5ac3b5eca09 Mon Sep 17 00:00:00 2001
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From: Marcelo Tosatti <mtosatti@redhat.com>
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Date: Tue, 20 Aug 2013 21:45:54 +0200
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Subject: [PATCH 26/28] kvm-all.c: max_cpus should not exceed KVM vcpu limit
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RH-Author: Marcelo Tosatti <mtosatti@redhat.com>
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Message-id: <20130820214554.GB9334@amt.cnet>
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Patchwork-id: 53621
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O-Subject: [RHEL7 qemu-kvm PATCH] kvm-all.c: max_cpus should not exceed KVM vcpu limit
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Bugzilla: 996258
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RH-Acked-by: Andrew Jones <drjones@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
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commit 7dc52526850849e8e0fe56ced809d0798481a2f6 of uq/master branch
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of qemu-kvm.git repository
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maxcpus, which specifies the maximum number of hotpluggable CPUs,
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should not exceed KVM's vcpu limit.
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Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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[Reword message. - Paolo]
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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BZ: 996258
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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kvm-all.c | 7 +++++++
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1 files changed, 7 insertions(+), 0 deletions(-)
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diff --git a/kvm-all.c b/kvm-all.c
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index 6c9d51e..545b470 100644
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--- a/kvm-all.c
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+++ b/kvm-all.c
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@@ -1358,6 +1358,13 @@ int kvm_init(void)
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goto err;
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}
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+ if (max_cpus > max_vcpus) {
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+ ret = -EINVAL;
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+ fprintf(stderr, "Number of hotpluggable cpus requested (%d) exceeds max cpus "
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+ "supported by KVM (%d)\n", max_cpus, max_vcpus);
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+ goto err;
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+ }
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+
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s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
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if (s->vmfd < 0) {
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#ifdef TARGET_S390X
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--
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1.7.1
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