x86: add set/clear_cpu_cap operations

The patch to suppress bitops-related warnings added a pile of ugly
casts.  Many of these were related to the management of x86 CPU
capabilities.  Clean these up by adding specific set/clear_cpu_cap
macros, and use them consistently.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Andi Kleen <ak@suse.de>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

9 files changed, 38 insertions, 35 deletions

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index d6405e0842b5..cdc43242da92 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -356,15 +356,15 @@ void alternatives_smp_switch(int smp)
         spin_lock_irqsave(&smp_alt, flags);
         if (smp) {
                 printk(KERN_INFO "SMP alternatives: switching to SMP code\n");
-                clear_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
-                clear_bit(X86_FEATURE_UP, cpu_data(0).x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_UP);
+                clear_cpu_cap(&cpu_data(0), X86_FEATURE_UP);
                 list_for_each_entry(mod, &smp_alt_modules, next)
                         alternatives_smp_lock(mod->locks, mod->locks_end,
                                               mod->text, mod->text_end);
         } else {
                 printk(KERN_INFO "SMP alternatives: switching to UP code\n");
-                set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
-                set_bit(X86_FEATURE_UP, cpu_data(0).x86_capability);
+                set_cpu_cap(&boot_cpu_data, X86_FEATURE_UP);
+                set_cpu_cap(&cpu_data(0), X86_FEATURE_UP);
                 list_for_each_entry(mod, &smp_alt_modules, next)
                         alternatives_smp_unlock(mod->locks, mod->locks_end,
                                                 mod->text, mod->text_end);
@@ -431,8 +431,9 @@ void __init alternative_instructions(void)
         if (smp_alt_once) {
                 if (1 == num_possible_cpus()) {
                         printk(KERN_INFO "SMP alternatives: switching to UP code\n");
-                        set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
-                        set_bit(X86_FEATURE_UP, cpu_data(0).x86_capability);
+                        set_cpu_cap(&boot_cpu_data, X86_FEATURE_UP);
+                        set_cpu_cap(&cpu_data(0), X86_FEATURE_UP);
+
                         alternatives_smp_unlock(__smp_locks, __smp_locks_end,
                                                 _text, _etext);
                 }
diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 56352c11a896..1ee443a8e61b 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -1078,7 +1078,7 @@ static int __init detect_init_APIC (void)
                 printk(KERN_WARNING "Could not enable APIC!\n");
                 return -1;
         }
-        set_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+        set_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
         mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
 
         /* The BIOS may have set up the APIC at some other address */
@@ -1168,7 +1168,7 @@ fake_ioapic_page:
 int __init APIC_init_uniprocessor (void)
 {
         if (enable_local_apic < 0)
-                clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
 
         if (!smp_found_config && !cpu_has_apic)
                 return -1;
@@ -1180,7 +1180,7 @@ int __init APIC_init_uniprocessor (void)
             APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
                 printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
                        boot_cpu_physical_apicid);
-                clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
                 return -1;
         }
 
@@ -1536,7 +1536,7 @@ early_param("lapic", parse_lapic);
 static int __init parse_nolapic(char *arg)
 {
         enable_local_apic = -1;
-        clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+        clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
         return 0;
 }
 early_param("nolapic", parse_nolapic);
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 027004262105..ab4ae50399fd 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -1211,7 +1211,7 @@ early_param("apic", apic_set_verbosity);
 static __init int setup_disableapic(char *str)
 {
         disable_apic = 1;
-        clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+        clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
         return 0;
 }
 early_param("disableapic", setup_disableapic);
diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index 3e91d3ee26ec..238468ae1993 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -45,6 +45,6 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
                         &regs[CR_ECX], &regs[CR_EDX]);
 
                 if (regs[cb->reg] & (1 << cb->bit))
-                        set_bit(cb->feature, c->x86_capability);
+                        set_cpu_cap(c, cb->feature);
         }
 }
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 8ef6a6bfd112..3c7672c40cf4 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -80,7 +80,7 @@ void mce_log(struct mce *mce)
                         /* When the buffer fills up discard new entries. Assume
                            that the earlier errors are the more interesting. */
                         if (entry >= MCE_LOG_LEN) {
-                                set_bit(MCE_OVERFLOW, &mcelog.flags);
+                                set_bit(MCE_OVERFLOW, (unsigned long *)&mcelog.flags);
                                 return;
                         }
                         /* Old left over entry. Skip. */
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 32edf70d6b0d..e9ede0fc585a 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -238,7 +238,7 @@ static int __init parse_mem(char *arg)
                 return -EINVAL;
 
         if (strcmp(arg, "nopentium") == 0) {
-                clear_bit(X86_FEATURE_PSE, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PSE);
                 disable_pse = 1;
         } else {
                 /* If the user specifies memory size, we
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 63dd39b843b5..ce4d6b52ce36 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -667,13 +667,13 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
         level = cpuid_eax(1);
         if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) ||
                              level >= 0x0f58))
-                set_bit(X86_FEATURE_REP_GOOD, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_REP_GOOD);
         if (c->x86 == 0x10 || c->x86 == 0x11)
-                set_bit(X86_FEATURE_REP_GOOD, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_REP_GOOD);
 
         /* Enable workaround for FXSAVE leak */
         if (c->x86 >= 6)
-                set_bit(X86_FEATURE_FXSAVE_LEAK, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_FXSAVE_LEAK);
 
         level = get_model_name(c);
         if (!level) {
@@ -689,7 +689,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 
         /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */
         if (c->x86_power & (1<<8))
-                set_bit(X86_FEATURE_CONSTANT_TSC, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
 
         /* Multi core CPU? */
         if (c->extended_cpuid_level >= 0x80000008)
@@ -702,14 +702,14 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
                 num_cache_leaves = 3;
 
         if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x11)
-                set_bit(X86_FEATURE_K8, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_K8);
 
         /* RDTSC can be speculated around */
-        clear_bit(X86_FEATURE_SYNC_RDTSC, (unsigned long *)&c->x86_capability);
+        clear_cpu_cap(c, X86_FEATURE_SYNC_RDTSC);
 
         /* Family 10 doesn't support C states in MWAIT so don't use it */
         if (c->x86 == 0x10 && !force_mwait)
-                clear_bit(X86_FEATURE_MWAIT, (unsigned long *)&c->x86_capability);
+                clear_cpu_cap(c, X86_FEATURE_MWAIT);
 
         if (amd_apic_timer_broken())
                 disable_apic_timer = 1;
@@ -811,17 +811,16 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
                 unsigned eax = cpuid_eax(10);
                 /* Check for version and the number of counters */
                 if ((eax & 0xff) && (((eax>>8) & 0xff) > 1))
-                        set_bit(X86_FEATURE_ARCH_PERFMON,
-                                (unsigned long *)&c->x86_capability);
+                        set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
         }
 
         if (cpu_has_ds) {
                 unsigned int l1, l2;
                 rdmsr(MSR_IA32_MISC_ENABLE, l1, l2);
                 if (!(l1 & (1<<11)))
-                        set_bit(X86_FEATURE_BTS, (unsigned long *)c->x86_capability);
+                        set_cpu_cap(c, X86_FEATURE_BTS);
                 if (!(l1 & (1<<12)))
-                        set_bit(X86_FEATURE_PEBS, (unsigned long *)c->x86_capability);
+                        set_cpu_cap(c, X86_FEATURE_PEBS);
         }
 
         n = c->extended_cpuid_level;
@@ -840,13 +839,13 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
                 c->x86_cache_alignment = c->x86_clflush_size * 2;
         if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
             (c->x86 == 0x6 && c->x86_model >= 0x0e))
-                set_bit(X86_FEATURE_CONSTANT_TSC, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
         if (c->x86 == 6)
-                set_bit(X86_FEATURE_REP_GOOD, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_REP_GOOD);
         if (c->x86 == 15)
-                set_bit(X86_FEATURE_SYNC_RDTSC, (unsigned long *)&c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_SYNC_RDTSC);
         else
-                clear_bit(X86_FEATURE_SYNC_RDTSC, (unsigned long *)&c->x86_capability);
+                clear_cpu_cap(c, X86_FEATURE_SYNC_RDTSC);
         c->x86_max_cores = intel_num_cpu_cores(c);
 
         srat_detect_node();
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index aacce426cbd0..87e5633805a9 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -963,19 +963,19 @@ static int __init parse_vmi(char *arg)
                 return -EINVAL;
 
         if (!strcmp(arg, "disable_pge")) {
-                clear_bit(X86_FEATURE_PGE, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PGE);
                 disable_pge = 1;
         } else if (!strcmp(arg, "disable_pse")) {
-                clear_bit(X86_FEATURE_PSE, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PSE);
                 disable_pse = 1;
         } else if (!strcmp(arg, "disable_sep")) {
-                clear_bit(X86_FEATURE_SEP, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_SEP);
                 disable_sep = 1;
         } else if (!strcmp(arg, "disable_tsc")) {
-                clear_bit(X86_FEATURE_TSC, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_TSC);
                 disable_tsc = 1;
         } else if (!strcmp(arg, "disable_mtrr")) {
-                clear_bit(X86_FEATURE_MTRR, boot_cpu_data.x86_capability);
+                clear_cpu_cap(&boot_cpu_data, X86_FEATURE_MTRR);
                 disable_mtrr = 1;
         } else if (!strcmp(arg, "disable_timer")) {
                 disable_vmi_timer = 1;
diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h
index 761922972f6f..87dd900154d1 100644
--- a/include/asm-x86/cpufeature.h
+++ b/include/asm-x86/cpufeature.h
@@ -124,9 +124,12 @@
            (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) ||     \
            (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) )      \
           ? 1 :                                                         \
-         test_bit(bit, (unsigned long *)(c)->x86_capability))
+         test_bit(bit, (unsigned long *)((c)->x86_capability)))
 #define boot_cpu_has(bit)       cpu_has(&boot_cpu_data, bit)
 
+#define set_cpu_cap(c, bit)     set_bit(bit, (unsigned long *)((c)->x86_capability))
+#define clear_cpu_cap(c, bit)   clear_bit(bit, (unsigned long *)((c)->x86_capability))
+
 #define cpu_has_fpu             boot_cpu_has(X86_FEATURE_FPU)
 #define cpu_has_vme             boot_cpu_has(X86_FEATURE_VME)
 #define cpu_has_de              boot_cpu_has(X86_FEATURE_DE)