arm64: Fix typos and spelling errors in comments

This patch corrects several minor typographical and spelling errors
in comments across multiple arm64 source files.

No functional changes.

Signed-off-by: mrigendrachaubey <mrigendra.chaubey@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/include/asm/assembler.h

@@ -371,7 +371,7 @@ alternative_endif
  * [start, end) with dcache line size explicitly provided.
  *
  * 	op:		operation passed to dc instruction
- * 	domain:		domain used in dsb instruciton
+ * 	domain:		domain used in dsb instruction
  * 	start:          starting virtual address of the region
  * 	end:            end virtual address of the region
  *	linesz:		dcache line size
@@ -412,7 +412,7 @@ alternative_endif
  * [start, end)
  *
  * 	op:		operation passed to dc instruction
- * 	domain:		domain used in dsb instruciton
+ * 	domain:		domain used in dsb instruction
  * 	start:          starting virtual address of the region
  * 	end:            end virtual address of the region
  * 	fixup:		optional label to branch to on user fault

arch/arm64/include/asm/cpufeature.h

@@ -199,7 +199,7 @@ extern struct arm64_ftr_reg arm64_ftr_reg_ctrel0;
  *    registers (e.g, SCTLR, TCR etc.) or patching the kernel via
  *    alternatives. The kernel patching is batched and performed at later
  *    point. The actions are always initiated only after the capability
- *    is finalised. This is usally denoted by "enabling" the capability.
+ *    is finalised. This is usually denoted by "enabling" the capability.
  *    The actions are initiated as follows :
  *	a) Action is triggered on all online CPUs, after the capability is
  *	finalised, invoked within the stop_machine() context from
@@ -251,7 +251,7 @@ extern struct arm64_ftr_reg arm64_ftr_reg_ctrel0;
 #define ARM64_CPUCAP_SCOPE_LOCAL_CPU		((u16)BIT(0))
 #define ARM64_CPUCAP_SCOPE_SYSTEM		((u16)BIT(1))
 /*
- * The capabilitiy is detected on the Boot CPU and is used by kernel
+ * The capability is detected on the Boot CPU and is used by kernel
  * during early boot. i.e, the capability should be "detected" and
  * "enabled" as early as possibly on all booting CPUs.
  */

arch/arm64/include/asm/el2_setup.h

@@ -28,7 +28,7 @@
 	 * Fruity CPUs seem to have HCR_EL2.E2H set to RAO/WI, but
 	 * don't advertise it (they predate this relaxation).
 	 *
-	 * Initalize HCR_EL2.E2H so that later code can rely upon HCR_EL2.E2H
+	 * Initialize HCR_EL2.E2H so that later code can rely upon HCR_EL2.E2H
 	 * indicating whether the CPU is running in E2H mode.
 	 */
 	mrs_s	x1, SYS_ID_AA64MMFR4_EL1

arch/arm64/include/asm/pgtable.h

@@ -432,7 +432,7 @@ bool pgattr_change_is_safe(pteval_t old, pteval_t new);
  *   1      0      |   1           0          1
  *   1      1      |   0           1          x
  *
- * When hardware DBM is not present, the sofware PTE_DIRTY bit is updated via
+ * When hardware DBM is not present, the software PTE_DIRTY bit is updated via
  * the page fault mechanism. Checking the dirty status of a pte becomes:
  *
  *   PTE_DIRTY || (PTE_WRITE && !PTE_RDONLY)
@@ -598,7 +598,7 @@ static inline int pte_protnone(pte_t pte)
 	/*
 	 * pte_present_invalid() tells us that the pte is invalid from HW
 	 * perspective but present from SW perspective, so the fields are to be
-	 * interpretted as per the HW layout. The second 2 checks are the unique
+	 * interpreted as per the HW layout. The second 2 checks are the unique
 	 * encoding that we use for PROT_NONE. It is insufficient to only use
 	 * the first check because we share the same encoding scheme with pmds
 	 * which support pmd_mkinvalid(), so can be present-invalid without

arch/arm64/include/asm/suspend.h

@@ -23,7 +23,7 @@ struct cpu_suspend_ctx {
  * __cpu_suspend_enter()'s caller, and populated by __cpu_suspend_enter().
  * This data must survive until cpu_resume() is called.
  *
- * This struct desribes the size and the layout of the saved cpu state.
+ * This struct describes the size and the layout of the saved cpu state.
  * The layout of the callee_saved_regs is defined by the implementation
  * of __cpu_suspend_enter(), and cpu_resume(). This struct must be passed
  * in by the caller as __cpu_suspend_enter()'s stack-frame is gone once it

arch/arm64/kernel/acpi.c

@@ -133,7 +133,7 @@ static int __init acpi_fadt_sanity_check(void)
 
 	/*
 	 * FADT is required on arm64; retrieve it to check its presence
-	 * and carry out revision and ACPI HW reduced compliancy tests
+	 * and carry out revision and ACPI HW reduced compliance tests
 	 */
 	status = acpi_get_table(ACPI_SIG_FADT, 0, &table);
 	if (ACPI_FAILURE(status)) {

arch/arm64/kernel/cpufeature.c

@@ -1002,7 +1002,7 @@ static void __init sort_ftr_regs(void)
 
 /*
  * Initialise the CPU feature register from Boot CPU values.
- * Also initiliases the strict_mask for the register.
+ * Also initialises the strict_mask for the register.
  * Any bits that are not covered by an arm64_ftr_bits entry are considered
  * RES0 for the system-wide value, and must strictly match.
  */

arch/arm64/kernel/ftrace.c

@@ -492,7 +492,7 @@ int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
 		return ret;
 
 	/*
-	 * When using mcount, callsites in modules may have been initalized to
+	 * When using mcount, callsites in modules may have been initialized to
 	 * call an arbitrary module PLT (which redirects to the _mcount stub)
 	 * rather than the ftrace PLT we'll use at runtime (which redirects to
 	 * the ftrace trampoline). We can ignore the old PLT when initializing

arch/arm64/kernel/machine_kexec.c

@@ -251,7 +251,7 @@ void crash_post_resume(void)
  * marked as Reserved as memory was allocated via memblock_reserve().
  *
  * In hibernation, the pages which are Reserved and yet "nosave" are excluded
- * from the hibernation iamge. crash_is_nosave() does thich check for crash
+ * from the hibernation image. crash_is_nosave() does thich check for crash
  * dump kernel and will reduce the total size of hibernation image.
  */
 

arch/arm64/kernel/probes/uprobes.c

@@ -131,7 +131,7 @@ void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
 	struct uprobe_task *utask = current->utask;
 
 	/*
-	 * Task has received a fatal signal, so reset back to probbed
+	 * Task has received a fatal signal, so reset back to probed
 	 * address.
 	 */
 	instruction_pointer_set(regs, utask->vaddr);

arch/arm64/kernel/sdei.c

@@ -202,7 +202,7 @@ unsigned long sdei_arch_get_entry_point(int conduit)
 /*
  * do_sdei_event() returns one of:
  *  SDEI_EV_HANDLED -  success, return to the interrupted context.
- *  SDEI_EV_FAILED  -  failure, return this error code to firmare.
+ *  SDEI_EV_FAILED  -  failure, return this error code to firmware.
  *  virtual-address -  success, return to this address.
  */
 unsigned long __kprobes do_sdei_event(struct pt_regs *regs,

arch/arm64/kernel/smp.c

@@ -350,7 +350,7 @@ void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu)
 
 	/*
 	 * Now that the dying CPU is beyond the point of no return w.r.t.
-	 * in-kernel synchronisation, try to get the firwmare to help us to
+	 * in-kernel synchronisation, try to get the firmware to help us to
 	 * verify that it has really left the kernel before we consider
 	 * clobbering anything it might still be using.
 	 */
@@ -523,7 +523,7 @@ int arch_register_cpu(int cpu)
 
 	/*
 	 * Availability of the acpi handle is sufficient to establish
-	 * that _STA has aleady been checked. No need to recheck here.
+	 * that _STA has already been checked. No need to recheck here.
 	 */
 	c->hotpluggable = arch_cpu_is_hotpluggable(cpu);
 

arch/arm64/kernel/traps.c

@@ -922,7 +922,7 @@ void __noreturn panic_bad_stack(struct pt_regs *regs, unsigned long esr, unsigne
 	__show_regs(regs);
 
 	/*
-	 * We use nmi_panic to limit the potential for recusive overflows, and
+	 * We use nmi_panic to limit the potential for recursive overflows, and
 	 * to get a better stack trace.
 	 */
 	nmi_panic(NULL, "kernel stack overflow");

arch/arm64/kvm/arch_timer.c

@@ -815,7 +815,7 @@ static void timer_set_traps(struct kvm_vcpu *vcpu, struct timer_map *map)
 		tpt = tpc = true;
 
 	/*
-	 * For the poor sods that could not correctly substract one value
+	 * For the poor sods that could not correctly subtract one value
 	 * from another, trap the full virtual timer and counter.
 	 */
 	if (has_broken_cntvoff() && timer_get_offset(map->direct_vtimer))

arch/arm64/kvm/hyp/nvhe/ffa.c

@@ -115,7 +115,7 @@ static void ffa_set_retval(struct kvm_cpu_context *ctxt,
 	 *
 	 * FFA-1.3 introduces 64-bit variants of the CPU cycle management
 	 * interfaces. Moreover, FF-A 1.3 clarifies that SMC32 direct requests
-	 * complete with SMC32 direct reponses which *should* allow us use the
+	 * complete with SMC32 direct responses which *should* allow us use the
 	 * function ID sent by the caller to determine whether to return x8-x17.
 	 *
 	 * Note that we also cannot rely on function IDs in the response.

arch/arm64/kvm/mmu.c

@@ -1755,7 +1755,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
 
 	/*
 	 * Check if this is non-struct page memory PFN, and cannot support
-	 * CMOs. It could potentially be unsafe to access as cachable.
+	 * CMOs. It could potentially be unsafe to access as cacheable.
 	 */
 	if (vm_flags & (VM_PFNMAP | VM_MIXEDMAP) && !pfn_is_map_memory(pfn)) {
 		if (is_vma_cacheable) {

arch/arm64/kvm/nested.c

@@ -85,7 +85,7 @@ int kvm_vcpu_init_nested(struct kvm_vcpu *vcpu)
 	/*
 	 * Let's treat memory allocation failures as benign: If we fail to
 	 * allocate anything, return an error and keep the allocated array
-	 * alive. Userspace may try to recover by intializing the vcpu
+	 * alive. Userspace may try to recover by initializing the vcpu
 	 * again, and there is no reason to affect the whole VM for this.
 	 */
 	num_mmus = atomic_read(&kvm->online_vcpus) * S2_MMU_PER_VCPU;

arch/arm64/net/bpf_jit_comp.c

@@ -3053,7 +3053,7 @@ bool bpf_jit_supports_exceptions(void)
 	/* We unwind through both kernel frames starting from within bpf_throw
 	 * call and BPF frames. Therefore we require FP unwinder to be enabled
 	 * to walk kernel frames and reach BPF frames in the stack trace.
-	 * ARM64 kernel is aways compiled with CONFIG_FRAME_POINTER=y
+	 * ARM64 kernel is always compiled with CONFIG_FRAME_POINTER=y
 	 */
 	return true;
 }