* [PATCH] KVM: Bump maximum vcpu count to 64
@ 2009-12-27 15:00 Avi Kivity
2009-12-27 18:29 ` Marcelo Tosatti
0 siblings, 1 reply; 2+ messages in thread
From: Avi Kivity @ 2009-12-27 15:00 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: kvm
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>
---
arch/x86/include/asm/kvm_host.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 6c8c7c5..741b897 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
--
1.6.5.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] KVM: Bump maximum vcpu count to 64
2009-12-27 15:00 [PATCH] KVM: Bump maximum vcpu count to 64 Avi Kivity
@ 2009-12-27 18:29 ` Marcelo Tosatti
0 siblings, 0 replies; 2+ messages in thread
From: Marcelo Tosatti @ 2009-12-27 18:29 UTC (permalink / raw)
To: Avi Kivity; +Cc: kvm
On Sun, Dec 27, 2009 at 05:00:46PM +0200, Avi Kivity wrote:
> 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>
Applied, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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