From: Avi Kivity <avi@redhat.com>
Date: Sun, 27 Dec 2009 15:00:46 +0000 (+0200)
Subject: KVM: Bump maximum vcpu count to 64
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0680fe52753381cb7154beeb01ef3e48f2cdeec6;p=linux-beck.git

KVM: Bump maximum vcpu count to 64

With slots_lock converted to rcu, the entire kvm hotpath on modern processors
(with npt or ept) now scales beautifully.  Increase the maximum vcpu count to
64 to reflect this.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 6c8c7c578c46..741b8972a3a5 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -25,7 +25,7 @@
 #include <asm/mtrr.h>
 #include <asm/msr-index.h>
 
-#define KVM_MAX_VCPUS 16
+#define KVM_MAX_VCPUS 64
 #define KVM_MEMORY_SLOTS 32
 /* memory slots that does not exposed to userspace */
 #define KVM_PRIVATE_MEM_SLOTS 4