linux-kernel - [PATCH 1/4] kvm: x86: Add CONFIG_KVM

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Date:   Mon, 1 Jul 2019 14:21:08 +0800
From:   Yi Wang <wang.yi59@....com.cn>
To:     pbonzini@...hat.com
Cc:     rkrcmar@...hat.com, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, x86@...nel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, xue.zhihong@....com.cn,
        wang.yi59@....com.cn, up2wing@...il.com, wang.liang82@....com.cn
Subject: [PATCH 1/4] kvm: x86: Add CONFIG_KVM_DEBUG

There are some *_debug functions in KVM, it may be
better to introduce CONFIG_DEBUG_KVM to replace the
*_debug macro, which can avoid bloating and slowing KVM,
as Sean suggested.

Signed-off-by: Yi Wang <wang.yi59@....com.cn>
---
 arch/x86/kvm/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index fc04241..7e76eb2 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -95,6 +95,14 @@ config KVM_MMU_AUDIT
 	 This option adds a R/W kVM module parameter 'mmu_audit', which allows
 	 auditing of KVM MMU events at runtime.
 
+config KVM_DEBUG
+	bool "Enable KVM debugging"
+	default n
+	depends on KVM
+	---help---
+	Say Y here if you want to enable verbose KVM debug output.
+
+
 # OK, it's a little counter-intuitive to do this, but it puts it neatly under
 # the virtualization menu.
 source "drivers/vhost/Kconfig"
-- 
1.8.3.1