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KVM: fix spectrev1 gadgets

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These were found with smatch, and then generalized when applicable.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2019-04-11 11:16:47 +02:00
parent be43c440eb
commit 1d487e9bf8
4 changed files with 16 additions and 9 deletions
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4
arch/x86/kvm/lapic.c
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@@ -138,6 +138,7 @@ static inline bool kvm_apic_map_get_logical_dest(struct kvm_apic_map *map,
if (offset <= max_apic_id) {
u8 cluster_size = min(max_apic_id - offset + 1, 16U);
offset = array_index_nospec(offset, map->max_apic_id + 1);
*cluster = &map->phys_map[offset];
*mask = dest_id & (0xffff >> (16 - cluster_size));
} else {
@@ -901,7 +902,8 @@ static inline bool kvm_apic_map_get_dest_lapic(struct kvm *kvm,
if (irq->dest_id > map->max_apic_id) {
*bitmap = 0;
} else {
*dst = &map->phys_map[irq->dest_id];
u32 dest_id = array_index_nospec(irq->dest_id, map->max_apic_id + 1);
*dst = &map->phys_map[dest_id];
*bitmap = 1;
}
return true;