KVM: fix some typos

Signed-off-by: NWei Yang <richard.weiyang@gmail.com>
[Preserved the iff and a probably intentional weird bracket notation.
 Also dropped the style change to make a single-purpose patch. - Radim]
Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/mmu.c

@@ -5638,7 +5638,7 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
 	 * spte from present to present (changing the spte from present
 	 * to nonpresent will flush all the TLBs immediately), in other
 	 * words, the only case we care is mmu_spte_update() where we
-	 * haved checked SPTE_HOST_WRITEABLE | SPTE_MMU_WRITEABLE
+	 * have checked SPTE_HOST_WRITEABLE | SPTE_MMU_WRITEABLE
 	 * instead of PT_WRITABLE_MASK, that means it does not depend
 	 * on PT_WRITABLE_MASK anymore.
 	 */

arch/x86/kvm/x86.c

@@ -9344,7 +9344,7 @@ static void kvm_mmu_slot_apply_flags(struct kvm *kvm,
 	 * with dirty logging disabled in order to eliminate unnecessary GPA
 	 * logging in PML buffer (and potential PML buffer full VMEXT). This
 	 * guarantees leaving PML enabled during guest's lifetime won't have
-	 * any additonal overhead from PML when guest is running with dirty
+	 * any additional overhead from PML when guest is running with dirty
 	 * logging disabled for memory slots.
 	 *
 	 * kvm_x86_ops->slot_enable_log_dirty is called when switching new slot

virt/kvm/async_pf.c

@@ -82,7 +82,7 @@ static void async_pf_execute(struct work_struct *work)
 	might_sleep();
 
 	/*
-	 * This work is run asynchromously to the task which owns
+	 * This work is run asynchronously to the task which owns
 	 * mm and might be done in another context, so we must
 	 * access remotely.
 	 */