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KVM: x86: fix return value for reserved EFER

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commit 66f61c92889ff3ca365161fb29dd36d6354682ba upstream.

Commit 11988499e62b ("KVM: x86: Skip EFER vs. guest CPUID checks for
host-initiated writes", 2019-04-02) introduced a "return false" in a
function returning int, and anyway set_efer has a "nonzero on error"
conventon so it should be returning 1.

Reported-by: Pavel Machek <pavel@denx.de>
Fixes: 11988499e62b ("KVM: x86: Skip EFER vs. guest CPUID checks for host-initiated writes")
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paolo Bonzini 2019-05-24 21:52:46 +02:00 committed by Greg Kroah-Hartman
parent 75d63b131b
commit 603212bdc5
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/x86.c
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@ -1026,7 +1026,7 @@ static int set_efer(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
u64 efer = msr_info->data;
if (efer & efer_reserved_bits)
return false;
return 1;
if (!msr_info->host_initiated) {
if (!__kvm_valid_efer(vcpu, efer))