linux-kernel - [PATCH] arch/x86: Use RCU_INIT

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Date:	Sat, 22 Mar 2014 12:28:10 +0530
From:	Monam Agarwal <monamagarwal123@...il.com>
To:	gleb@...nel.org, pbonzini@...hat.com, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, x86@...nel.org,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arch/x86: Use RCU_INIT_POINTER(x, NULL) in kvm/vmx.c

Here rcu_assign_pointer() is ensuring that the
initialization of a structure is carried out before storing a pointer
to that structure.  
So, rcu_assign_pointer(p, NULL) can always safely be converted to
RCU_INIT_POINTER(p, NULL). 

Signed-off-by: Monam Agarwal <monamagarwal123@...il.com>
---
 arch/x86/kvm/vmx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 3927528..e37c0da 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -8787,7 +8787,7 @@ static void __exit vmx_exit(void)
 	free_page((unsigned long)vmx_vmread_bitmap);
 
 #ifdef CONFIG_KEXEC
-	rcu_assign_pointer(crash_vmclear_loaded_vmcss, NULL);
+	RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
 	synchronize_rcu();
 #endif
 
-- 
1.7.9.5

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