From: Lan Tianyu <tianyu.lan@intel.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Lan Tianyu <tianyu.lan@intel.com>,
pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de,
mingo@redhat.com, hpa@zytor.com, x86@kernel.org,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH V2] KVM/x86: Increase max vcpu number to 8192
Date: Tue, 15 Aug 2017 20:43:23 -0400 [thread overview]
Message-ID: <1502844203-10556-1-git-send-email-tianyu.lan@intel.com> (raw)
For HPC usage case, it will create a huge VM with vcpus number as same as host
cpus and this requires more vcpus support in a single VM. This patch is to
increase max vcpu number from 288 to 8192 which is current default maximum cpu
number for Linux kernel.
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
---
arch/x86/include/asm/kvm_host.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 87ac4fb..7946394 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -35,7 +35,7 @@
#include <asm/asm.h>
#include <asm/kvm_page_track.h>
-#define KVM_MAX_VCPUS 288
+#define KVM_MAX_VCPUS 8192
#define KVM_SOFT_MAX_VCPUS 240
#define KVM_MAX_VCPU_ID 1023
#define KVM_USER_MEM_SLOTS 509
--
1.8.3.1
next reply other threads:[~2017-08-16 6:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-16 0:43 Lan Tianyu [this message]
2017-08-21 15:52 ` Radim Krčmář
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