Eliminate Japanese comments

arch/x86/kernel/cpu.c

@@ -762,10 +762,10 @@ void init_gettime_support(void)
 	uint64_t edx;
 
 	/* Check if Invariant TSC supported.
-	 * Processor’s support for invariant TSC is indicated by
+	 * Processor's support for invariant TSC is indicated by
 	 * CPUID.80000007H:EDX[8].
 	 * See page 2498 of the Intel64 and IA-32 Architectures Software
-	 * Developer’s Manual - combined */
+	 * Developer's Manual - combined */
 
 	op = 0x80000007;
 	asm volatile("cpuid" : "=a"(eax),"=b"(ebx),"=c"(ecx),"=d"(edx) : "a" (op));

executer/kernel/mcctrl/syscall.c

@@ -1385,8 +1385,8 @@ static int pager_req_write(ihk_os_t os, uintptr_t handle, off_t off, size_t size
 	}
 
 	/*
-	 * XXX: vfs_write 位の階層を使いつつ，
-	 * ファイルサイズ更新を回避する方法ないかな？
+	 * XXX: Find a way to avoid changing the file size
+	 * by using a function in the same abstraction level as vfs_write().
 	 */
 	fsize = i_size_read(file->f_mapping->host);
 	if (off >= fsize) {
@@ -1584,7 +1584,7 @@ static int pager_req_pfn(ihk_os_t os, uintptr_t handle, off_t off, uintptr_t ppf
 
 	va = pager->map_uaddr + (off - pager->map_off);
 #define	PFN_VALID	((uintptr_t)1 << 63)
-	pfn = PFN_VALID;	/* デフォルトは not present */
+	pfn = PFN_VALID;	/* Use "not present" as the default setting */
 
 	down_read(&current->mm->mmap_sem);
 retry: