This looks OK. The use of vcpu argument is removed in commit d383b3146d80 (KVM: x86: Fix NULL dereference at kvm_msr_ignored_check())
Reviewed-by: Keqian Zhu <zhukeqian1@xxxxxxxxxx>
On 2021/3/13 13:10, lihaiwei.kernel@xxxxxxxxx wrote:
> From: Haiwei Li <lihaiwei@xxxxxxxxxxx>
>
> kvm_msr_ignored_check function never uses vcpu argument. Clean up the
> function and invokers.
>
> Signed-off-by: Haiwei Li <lihaiwei@xxxxxxxxxxx>
> ---
> arch/x86/kvm/x86.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 012d5df..27e9ee8 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -271,8 +271,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
> * When called, it means the previous get/set msr reached an invalid msr.
> * Return true if we want to ignore/silent this failed msr access.
> */
> -static bool kvm_msr_ignored_check(struct kvm_vcpu *vcpu, u32 msr,
> - u64 data, bool write)
> +static bool kvm_msr_ignored_check(u32 msr, u64 data, bool write)
> {
> const char *op = write ? "wrmsr" : "rdmsr";
>
> @@ -1447,7 +1446,7 @@ static int do_get_msr_feature(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
> if (r == KVM_MSR_RET_INVALID) {
> /* Unconditionally clear the output for simplicity */
> *data = 0;
> - if (kvm_msr_ignored_check(vcpu, index, 0, false))
> + if (kvm_msr_ignored_check(index, 0, false))
> r = 0;
> }
>
> @@ -1613,7 +1612,7 @@ static int kvm_set_msr_ignored_check(struct kvm_vcpu *vcpu,
> int ret = __kvm_set_msr(vcpu, index, data, host_initiated);
>
> if (ret == KVM_MSR_RET_INVALID)
> - if (kvm_msr_ignored_check(vcpu, index, data, true))
> + if (kvm_msr_ignored_check(index, data, true))
> ret = 0;
>
> return ret;
> @@ -1651,7 +1650,7 @@ static int kvm_get_msr_ignored_check(struct kvm_vcpu *vcpu,
> if (ret == KVM_MSR_RET_INVALID) {
> /* Unconditionally clear *data for simplicity */
> *data = 0;
> - if (kvm_msr_ignored_check(vcpu, index, 0, false))
> + if (kvm_msr_ignored_check(index, 0, false))
> ret = 0;
> }
>
>
