arm64: change compat_elf_hwcap and compat_elf_hwcap2 prefix to a32

hulk inclusion
category: feature
bugzilla: NA
CVE: NA
---------------------------

ILP32 patch series introduces new type of binaries which is also compat.
So rename existung aarch32 compat_elf_hwcap's helps to avoid confusing.
Signed-off-by: NYury Norov <ynorov@caviumnetworks.com>
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NHanjun Guo &lt;guohanjun@huawei.com <mailto:guohanjun@huawei.com&gt;>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/arm64/include/asm/hwcap.h

@@ -47,7 +47,7 @@
 #define ELF_HWCAP		(elf_hwcap)
 
 #ifdef CONFIG_AARCH32_EL0
-extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
+extern unsigned int a32_elf_hwcap, a32_elf_hwcap2;
 #endif
 
 enum {

arch/arm64/kernel/binfmt_elf32.c

@@ -20,8 +20,8 @@
 })
 
 #define COMPAT_ARCH_DLINFO
-#define COMPAT_ELF_HWCAP		(compat_elf_hwcap)
-#define COMPAT_ELF_HWCAP2		(compat_elf_hwcap2)
+#define COMPAT_ELF_HWCAP		(a32_elf_hwcap)
+#define COMPAT_ELF_HWCAP2		(a32_elf_hwcap2)
 
 #define compat_arch_setup_additional_pages \
 					aarch32_setup_vectors_page

arch/arm64/kernel/cpufeature.c

@@ -39,13 +39,13 @@ unsigned long elf_hwcap __read_mostly;
 EXPORT_SYMBOL_GPL(elf_hwcap);
 
 #ifdef CONFIG_AARCH32_EL0
-#define COMPAT_ELF_HWCAP_DEFAULT	\
+#define AARCH32_EL0_ELF_HWCAP_DEFAULT	\
 				(COMPAT_HWCAP_HALF|COMPAT_HWCAP_THUMB|\
 				 COMPAT_HWCAP_FAST_MULT|COMPAT_HWCAP_EDSP|\
 				 COMPAT_HWCAP_TLS|COMPAT_HWCAP_IDIV|\
 				 COMPAT_HWCAP_LPAE)
-unsigned int compat_elf_hwcap __read_mostly = COMPAT_ELF_HWCAP_DEFAULT;
-unsigned int compat_elf_hwcap2 __read_mostly;
+unsigned int a32_elf_hwcap __read_mostly = AARCH32_EL0_ELF_HWCAP_DEFAULT;
+unsigned int a32_elf_hwcap2 __read_mostly;
 #endif
 
 DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS);
@@ -1621,10 +1621,10 @@ static void __init cap_set_elf_hwcap(const struct arm64_cpu_capabilities *cap)
 		break;
 #ifdef CONFIG_AARCH32_EL0
 	case CAP_COMPAT_HWCAP:
-		compat_elf_hwcap |= (u32)cap->hwcap;
+		a32_elf_hwcap |= (u32)cap->hwcap;
 		break;
 	case CAP_COMPAT_HWCAP2:
-		compat_elf_hwcap2 |= (u32)cap->hwcap;
+		a32_elf_hwcap2 |= (u32)cap->hwcap;
 		break;
 #endif
 	default:
@@ -1644,10 +1644,10 @@ static bool cpus_have_elf_hwcap(const struct arm64_cpu_capabilities *cap)
 		break;
 #ifdef CONFIG_AARCH32_EL0
 	case CAP_COMPAT_HWCAP:
-		rc = (compat_elf_hwcap & (u32)cap->hwcap) != 0;
+		rc = (a32_elf_hwcap & (u32)cap->hwcap) != 0;
 		break;
 	case CAP_COMPAT_HWCAP2:
-		rc = (compat_elf_hwcap2 & (u32)cap->hwcap) != 0;
+		rc = (a32_elf_hwcap2 & (u32)cap->hwcap) != 0;
 		break;
 #endif
 	default:

arch/arm64/kernel/cpuinfo.c

@@ -126,7 +126,7 @@ static const char *const compat_hwcap2_str[] = {
 static int c_show(struct seq_file *m, void *v)
 {
 	int i, j;
-	bool compat = personality(current->personality) == PER_LINUX32;
+	bool aarch32 = personality(current->personality) == PER_LINUX32;
 
 	for_each_online_cpu(i) {
 		struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
@@ -138,7 +138,7 @@ static int c_show(struct seq_file *m, void *v)
 		 * "processor".  Give glibc what it expects.
 		 */
 		seq_printf(m, "processor\t: %d\n", i);
-		if (compat)
+		if (aarch32)
 			seq_printf(m, "model name\t: ARMv8 Processor rev %d (%s)\n",
 				   MIDR_REVISION(midr), COMPAT_ELF_PLATFORM);
 
@@ -153,14 +153,14 @@ static int c_show(struct seq_file *m, void *v)
 		 * software which does already (at least for 32-bit).
 		 */
 		seq_puts(m, "Features\t:");
-		if (compat) {
+		if (aarch32) {
 #ifdef CONFIG_AARCH32_EL0
 			for (j = 0; compat_hwcap_str[j]; j++)
-				if (compat_elf_hwcap & (1 << j))
+				if (a32_elf_hwcap & (1 << j))
 					seq_printf(m, " %s", compat_hwcap_str[j]);
 
 			for (j = 0; compat_hwcap2_str[j]; j++)
-				if (compat_elf_hwcap2 & (1 << j))
+				if (a32_elf_hwcap2 & (1 << j))
 					seq_printf(m, " %s", compat_hwcap2_str[j]);
 #endif /* CONFIG_AARCH32_EL0 */
 		} else {

drivers/clocksource/arm_arch_timer.c

@@ -822,7 +822,7 @@ static void arch_timer_evtstrm_enable(int divider)
 	arch_timer_set_cntkctl(cntkctl);
 	elf_hwcap |= HWCAP_EVTSTRM;
 #ifdef CONFIG_AARCH32_EL0
-	compat_elf_hwcap |= COMPAT_HWCAP_EVTSTRM;
+	a32_elf_hwcap |= COMPAT_HWCAP_EVTSTRM;
 #endif
 	cpumask_set_cpu(smp_processor_id(), &evtstrm_available);
 }