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KVM: x86: Add a VALID_MASK for the flag in kvm_msr_filter

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Add the mask KVM_MSR_FILTER_VALID_MASK for the flag in the struct
kvm_msr_filter.  This makes it easier to introduce new flags in the
future.

No functional change intended.

Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Message-Id: <20220921151525.904162-4-aaronlewis@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Aaron Lewis 2022-09-21 15:15:23 +00:00 • committed by Paolo Bonzini
parent db205f7e1e
commit c1340fe359
2 changed files with 2 additions and 1 deletions
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1
arch/x86/include/uapi/asm/kvm.h
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@ -226,6 +226,7 @@ struct kvm_msr_filter {
#define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0) #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0)
#endif #endif
#define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0) #define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0)
#define KVM_MSR_FILTER_VALID_MASK (KVM_MSR_FILTER_DEFAULT_DENY)
__u32 flags; __u32 flags;
struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES]; struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES];
}; };

2
arch/x86/kvm/x86.c
View file

@ -6441,7 +6441,7 @@ static int kvm_vm_ioctl_set_msr_filter(struct kvm *kvm,
int r = 0; int r = 0;
u32 i; u32 i;
if (filter->flags & ~KVM_MSR_FILTER_DEFAULT_DENY) if (filter->flags & ~KVM_MSR_FILTER_VALID_MASK)
return -EINVAL; return -EINVAL;
for (i = 0; i < ARRAY_SIZE(filter->ranges); i++) for (i = 0; i < ARRAY_SIZE(filter->ranges); i++)