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From:   Al Viro <viro@ZenIV.linux.org.uk>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH 8/9] x86: kvm_hv_set_msr(): use __put_user() instead of 32bit __clear_user()
Date:   Sat, 30 May 2020 00:27:23 +0100
Message-Id: <20200529232723.44942-8-viro@ZenIV.linux.org.uk>
In-Reply-To: <20200529232723.44942-1-viro@ZenIV.linux.org.uk>
References: <20200528234025.GT23230@ZenIV.linux.org.uk>
 <20200529232723.44942-1-viro@ZenIV.linux.org.uk>
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From: Al Viro <viro@zeniv.linux.org.uk>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/x86/kvm/hyperv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index bcefa9d4e57e..b85b211d4676 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -1129,7 +1129,7 @@ static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host)
 		 * only, there can be valuable data in the rest which needs
 		 * to be preserved e.g. on migration.
 		 */
-		if (__clear_user((void __user *)addr, sizeof(u32)))
+		if (__put_user(0, (u32 __user *)addr))
 			return 1;
 		hv_vcpu->hv_vapic = data;
 		kvm_vcpu_mark_page_dirty(vcpu, gfn);
-- 
2.11.0