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x86: kvm_hv_set_msr(): use __put_user() instead of 32bit __clear_user()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-02-18 17:32:46 -05:00
parent 5ea75ae6ae
commit 9eb41c5214
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/hyperv.c
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@ -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);