KVM: Fix spelling in code comments

Fix spelling and typos (e.g., repeated words) in comments.

Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200401140310.29701-1-tabba@google.com

arch/arm64/kvm/arm.c

@@ -455,9 +455,9 @@ void force_vm_exit(const cpumask_t *mask)
  *
  * The hardware supports a limited set of values with the value zero reserved
  * for the host, so we check if an assigned value belongs to a previous
- * generation, which which requires us to assign a new value. If we're the
+ * generation, which requires us to assign a new value. If we're the first to
- * first to use a VMID for the new generation, we must flush necessary caches
+ * use a VMID for the new generation, we must flush necessary caches and TLBs
- * and TLBs on all CPUs.
+ * on all CPUs.
  */
 static bool need_new_vmid_gen(struct kvm_vmid *vmid)
 {

arch/arm64/kvm/guest.c

@@ -267,7 +267,7 @@ static int set_sve_vls(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 	/*
 	 * Vector lengths supported by the host can't currently be
 	 * hidden from the guest individually: instead we can only set a
-	 * maxmium via ZCR_EL2.LEN.  So, make sure the available vector
+	 * maximum via ZCR_EL2.LEN.  So, make sure the available vector
 	 * lengths match the set requested exactly up to the requested
 	 * maximum:
 	 */
@@ -337,7 +337,7 @@ static int sve_reg_to_region(struct sve_state_reg_region *region,
 	unsigned int reg_num;
 
 	unsigned int reqoffset, reqlen; /* User-requested offset and length */
-	unsigned int maxlen; /* Maxmimum permitted length */
+	unsigned int maxlen; /* Maximum permitted length */
 
 	size_t sve_state_size;
 

arch/arm64/kvm/hyp/vgic-v3-sr.c

@@ -577,7 +577,7 @@ static u8 __hyp_text __vgic_v3_pri_to_pre(u8 pri, u32 vmcr, int grp)
 
 /*
  * The priority value is independent of any of the BPR values, so we
- * normalize it using the minumal BPR value. This guarantees that no
+ * normalize it using the minimal BPR value. This guarantees that no
  * matter what the guest does with its BPR, we can always set/get the
  * same value of a priority.
  */

arch/arm64/kvm/mmio.c

@@ -131,7 +131,7 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
 
 	/*
 	 * No valid syndrome? Ask userspace for help if it has
-	 * voluntered to do so, and bail out otherwise.
+	 * volunteered to do so, and bail out otherwise.
 	 */
 	if (!kvm_vcpu_dabt_isvalid(vcpu)) {
 		if (vcpu->kvm->arch.return_nisv_io_abort_to_user) {

arch/arm64/kvm/mmu.c

@@ -784,7 +784,7 @@ static int __create_hyp_private_mapping(phys_addr_t phys_addr, size_t size,
 	mutex_lock(&kvm_hyp_pgd_mutex);
 
 	/*
-	 * This assumes that we we have enough space below the idmap
+	 * This assumes that we have enough space below the idmap
 	 * page to allocate our VAs. If not, the check below will
 	 * kick. A potential alternative would be to detect that
 	 * overflow and switch to an allocation above the idmap.
@@ -964,7 +964,7 @@ static void stage2_unmap_memslot(struct kvm *kvm,
  * stage2_unmap_vm - Unmap Stage-2 RAM mappings
  * @kvm: The struct kvm pointer
  *
- * Go through the memregions and unmap any reguler RAM
+ * Go through the memregions and unmap any regular RAM
  * backing memory already mapped to the VM.
  */
 void stage2_unmap_vm(struct kvm *kvm)
@@ -2262,7 +2262,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
 {
 	/*
 	 * At this point memslot has been committed and there is an
-	 * allocated dirty_bitmap[], dirty pages will be be tracked while the
+	 * allocated dirty_bitmap[], dirty pages will be tracked while the
 	 * memory slot is write protected.
 	 */
 	if (change != KVM_MR_DELETE && mem->flags & KVM_MEM_LOG_DIRTY_PAGES)

arch/arm64/kvm/psci.c

@@ -94,7 +94,7 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
 
 	/*
 	 * NOTE: We always update r0 (or x0) because for PSCI v0.1
-	 * the general puspose registers are undefined upon CPU_ON.
+	 * the general purpose registers are undefined upon CPU_ON.
 	 */
 	reset_state->r0 = smccc_get_arg3(source_vcpu);
 
@@ -265,10 +265,10 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
 	case PSCI_0_2_FN_SYSTEM_OFF:
 		kvm_psci_system_off(vcpu);
 		/*
-		 * We should'nt be going back to guest VCPU after
+		 * We shouldn't be going back to guest VCPU after
 		 * receiving SYSTEM_OFF request.
 		 *
-		 * If user space accidently/deliberately resumes
+		 * If user space accidentally/deliberately resumes
 		 * guest VCPU after SYSTEM_OFF request then guest
 		 * VCPU should see internal failure from PSCI return
 		 * value. To achieve this, we preload r0 (or x0) with

arch/arm64/kvm/reset.c

@@ -163,7 +163,7 @@ static int kvm_vcpu_finalize_sve(struct kvm_vcpu *vcpu)
 	vl = vcpu->arch.sve_max_vl;
 
 	/*
-	 * Resposibility for these properties is shared between
+	 * Responsibility for these properties is shared between
 	 * kvm_arm_init_arch_resources(), kvm_vcpu_enable_sve() and
 	 * set_sve_vls().  Double-check here just to be sure:
 	 */
@@ -249,7 +249,7 @@ static int kvm_vcpu_enable_ptrauth(struct kvm_vcpu *vcpu)
  * ioctl or as part of handling a request issued by another VCPU in the PSCI
  * handling code.  In the first case, the VCPU will not be loaded, and in the
  * second case the VCPU will be loaded.  Because this function operates purely
- * on the memory-backed valus of system registers, we want to do a full put if
+ * on the memory-backed values of system registers, we want to do a full put if
  * we were loaded (handling a request) and load the values back at the end of
  * the function.  Otherwise we leave the state alone.  In both cases, we
  * disable preemption around the vcpu reset as we would otherwise race with
@@ -357,7 +357,7 @@ void kvm_set_ipa_limit(void)
 	 *
 	 * So clamp the ipa limit further down to limit the number of levels.
 	 * Since we can concatenate upto 16 tables at entry level, we could
-	 * go upto 4bits above the maximum VA addressible with the current
+	 * go upto 4bits above the maximum VA addressable with the current
 	 * number of levels.
 	 */
 	va_max = PGDIR_SHIFT + PAGE_SHIFT - 3;

arch/arm64/kvm/sys_regs.c

@@ -34,7 +34,7 @@
 #include "trace.h"
 
 /*
- * All of this file is extremly similar to the ARM coproc.c, but the
+ * All of this file is extremely similar to the ARM coproc.c, but the
  * types are different. My gut feeling is that it should be pretty
  * easy to merge, but that would be an ABI breakage -- again. VFP
  * would also need to be abstracted.
@@ -118,8 +118,8 @@ void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg)
 	 * entry to the guest but are only restored on vcpu_load.
 	 *
 	 * Note that MPIDR_EL1 for the guest is set by KVM via VMPIDR_EL2 but
-	 * should never be listed below, because the the MPIDR should only be
+	 * should never be listed below, because the MPIDR should only be set
-	 * set once, before running the VCPU, and never changed later.
+	 * once, before running the VCPU, and never changed later.
 	 */
 	switch (reg) {
 	case CSSELR_EL1:	write_sysreg_s(val, SYS_CSSELR_EL1);	return;

arch/arm64/kvm/vgic/vgic-v3.c

@@ -587,7 +587,7 @@ int vgic_v3_probe(const struct gic_kvm_info *info)
 	int ret;
 
 	/*
-	 * The ListRegs field is 5 bits, but there is a architectural
+	 * The ListRegs field is 5 bits, but there is an architectural
 	 * maximum of 16 list registers. Just ignore bit 4...
 	 */
 	kvm_vgic_global_state.nr_lr = (ich_vtr_el2 & 0xf) + 1;

virt/kvm/coalesced_mmio.c

@@ -119,7 +119,7 @@ int kvm_coalesced_mmio_init(struct kvm *kvm)
 
 	/*
 	 * We're using this spinlock to sync access to the coalesced ring.
-	 * The list doesn't need it's own lock since device registration and
+	 * The list doesn't need its own lock since device registration and
 	 * unregistration should only happen when kvm->slots_lock is held.
 	 */
 	spin_lock_init(&kvm->ring_lock);

virt/kvm/eventfd.c

@@ -116,7 +116,7 @@ irqfd_shutdown(struct work_struct *work)
 	struct kvm *kvm = irqfd->kvm;
 	u64 cnt;
 
-	/* Make sure irqfd has been initalized in assign path. */
+	/* Make sure irqfd has been initialized in assign path. */
 	synchronize_srcu(&kvm->irq_srcu);
 
 	/*

virt/kvm/kvm_main.c

@@ -2799,7 +2799,7 @@ EXPORT_SYMBOL_GPL(kvm_vcpu_yield_to);
  *
  *  (a) VCPU which has not done pl-exit or cpu relax intercepted recently
  *  (preempted lock holder), indicated by @in_spin_loop.
- *  Set at the beiginning and cleared at the end of interception/PLE handler.
+ *  Set at the beginning and cleared at the end of interception/PLE handler.
  *
  *  (b) VCPU which has done pl-exit/ cpu relax intercepted but did not get
  *  chance last time (mostly it has become eligible now since we have probably