x86/mtrr: Remove set_all callback from struct mtrr_ops

Instead of using an indirect call to mtrr_if->set_all just call the only
possible target cache_cpu_init() directly. Remove the set_all function
pointer from struct mtrr_ops.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221102074713.21493-9-jgross@suse.comSigned-off-by: Borislav Petkov <bp@suse.de>

arch/x86/kernel/cpu/mtrr/generic.c

@@ -843,7 +843,6 @@ int positive_have_wrcomb(void)
  * Generic structure...
  */
 const struct mtrr_ops generic_mtrr_ops = {
-	.set_all		= cache_cpu_init,
 	.get			= generic_get_mtrr,
 	.get_free_region	= generic_get_free_region,
 	.set			= generic_set_mtrr,

arch/x86/kernel/cpu/mtrr/mtrr.c

@@ -170,15 +170,15 @@ static int mtrr_rendezvous_handler(void *info)
 	 * saved, and we want to replicate that across all the cpus that come
 	 * online (either at the end of boot or resume or during a runtime cpu
 	 * online). If we're doing that, @reg is set to something special and on
-	 * all the cpu's we do mtrr_if->set_all() (On the logical cpu that
+	 * all the CPUs we do cache_cpu_init() (On the logical CPU that
 	 * started the boot/resume sequence, this might be a duplicate
-	 * set_all()).
+	 * cache_cpu_init()).
 	 */
 	if (data->smp_reg != ~0U) {
 		mtrr_if->set(data->smp_reg, data->smp_base,
 			     data->smp_size, data->smp_type);
 	} else if (mtrr_aps_delayed_init || !cpu_online(smp_processor_id())) {
-		mtrr_if->set_all();
+		cache_cpu_init();
 	}
 	return 0;
 }
@@ -770,7 +770,7 @@ void __init mtrr_bp_init(void)
 
 			if (mtrr_cleanup(phys_addr)) {
 				changed_by_mtrr_cleanup = 1;
-				mtrr_if->set_all();
+				cache_cpu_init();
 			}
 		}
 	}
@@ -856,7 +856,7 @@ void mtrr_bp_restore(void)
 	if (!memory_caching_control)
 		return;
 
-	mtrr_if->set_all();
+	cache_cpu_init();
 }
 
 static int __init mtrr_init_finialize(void)

arch/x86/kernel/cpu/mtrr/mtrr.h

@@ -16,8 +16,6 @@ struct mtrr_ops {
 	u32	vendor;
 	void	(*set)(unsigned int reg, unsigned long base,
 		       unsigned long size, mtrr_type type);
-	void	(*set_all)(void);
-
 	void	(*get)(unsigned int reg, unsigned long *base,
 		       unsigned long *size, mtrr_type *type);
 	int	(*get_free_region)(unsigned long base, unsigned long size,