Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/li…

…nux-2.6

* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6:
  [PATCH] i386: Fix some warnings added by earlier patch
  [PATCH] x86-64: Always flush all pages in change_page_attr
  [PATCH] x86: Remove noreplacement option
  [PATCH] x86-64: make GART PTEs uncacheable

Documentation/x86_64/boot-options.txt

@@ -293,7 +293,3 @@ Debugging
 			stuck (default)
 
 Miscellaneous
-
-  noreplacement  Don't replace instructions with more appropriate ones
-		 for the CPU. This may be useful on asymmetric MP systems
-		 where some CPUs have less capabilities than others.

arch/i386/kernel/alternative.c

@@ -5,15 +5,9 @@
 #include <asm/alternative.h>
 #include <asm/sections.h>
 
-static int no_replacement    = 0;
 static int smp_alt_once      = 0;
 static int debug_alternative = 0;
 
-static int __init noreplacement_setup(char *s)
-{
-	no_replacement = 1;
-	return 1;
-}
 static int __init bootonly(char *str)
 {
 	smp_alt_once = 1;
@@ -25,7 +19,6 @@ static int __init debug_alt(char *str)
 	return 1;
 }
 
-__setup("noreplacement", noreplacement_setup);
 __setup("smp-alt-boot", bootonly);
 __setup("debug-alternative", debug_alt);
 
@@ -252,9 +245,6 @@ void alternatives_smp_module_add(struct module *mod, char *name,
 	struct smp_alt_module *smp;
 	unsigned long flags;
 
-	if (no_replacement)
-		return;
-
 	if (smp_alt_once) {
 		if (boot_cpu_has(X86_FEATURE_UP))
 			alternatives_smp_unlock(locks, locks_end,
@@ -289,7 +279,7 @@ void alternatives_smp_module_del(struct module *mod)
 	struct smp_alt_module *item;
 	unsigned long flags;
 
-	if (no_replacement || smp_alt_once)
+	if (smp_alt_once)
 		return;
 
 	spin_lock_irqsave(&smp_alt, flags);
@@ -320,7 +310,7 @@ void alternatives_smp_switch(int smp)
 	return;
 #endif
 
-	if (no_replacement || smp_alt_once)
+	if (smp_alt_once)
 		return;
 	BUG_ON(!smp && (num_online_cpus() > 1));
 
@@ -386,13 +376,6 @@ extern struct paravirt_patch __start_parainstructions[],
 void __init alternative_instructions(void)
 {
 	unsigned long flags;
-	if (no_replacement) {
-		printk(KERN_INFO "(SMP-)alternatives turned off\n");
-		free_init_pages("SMP alternatives",
-				(unsigned long)__smp_alt_begin,
-				(unsigned long)__smp_alt_end);
-		return;
-	}
 
 	local_irq_save(flags);
 	apply_alternatives(__alt_instructions, __alt_instructions_end);

arch/i386/kernel/nmi.c

@@ -126,7 +126,7 @@ int avail_to_resrv_perfctr_nmi_bit(unsigned int counter)
 	int cpu;
 	BUG_ON(counter > NMI_MAX_COUNTER_BITS);
 	for_each_possible_cpu (cpu) {
-		if (test_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)))
+		if (test_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)[0]))
 			return 0;
 	}
 	return 1;
@@ -142,7 +142,7 @@ int avail_to_resrv_perfctr_nmi(unsigned int msr)
 	BUG_ON(counter > NMI_MAX_COUNTER_BITS);
 
 	for_each_possible_cpu (cpu) {
-		if (test_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)))
+		if (test_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)[0]))
 			return 0;
 	}
 	return 1;
@@ -157,7 +157,7 @@ static int __reserve_perfctr_nmi(int cpu, unsigned int msr)
 	counter = nmi_perfctr_msr_to_bit(msr);
 	BUG_ON(counter > NMI_MAX_COUNTER_BITS);
 
-	if (!test_and_set_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)))
+	if (!test_and_set_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)[0]))
 		return 1;
 	return 0;
 }
@@ -171,7 +171,7 @@ static void __release_perfctr_nmi(int cpu, unsigned int msr)
 	counter = nmi_perfctr_msr_to_bit(msr);
 	BUG_ON(counter > NMI_MAX_COUNTER_BITS);
 
-	clear_bit(counter, &per_cpu(perfctr_nmi_owner, cpu));
+	clear_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)[0]);
 }
 
 int reserve_perfctr_nmi(unsigned int msr)

arch/x86_64/kernel/pci-gart.c

@@ -519,7 +519,11 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
 	gatt_size = (aper_size >> PAGE_SHIFT) * sizeof(u32); 
 	gatt = (void *)__get_free_pages(GFP_KERNEL, get_order(gatt_size)); 
 	if (!gatt) 
-		panic("Cannot allocate GATT table"); 
+		panic("Cannot allocate GATT table");
+	if (change_page_attr_addr((unsigned long)gatt, gatt_size >> PAGE_SHIFT, PAGE_KERNEL_NOCACHE))
+		panic("Could not set GART PTEs to uncacheable pages");
+	global_flush_tlb();
+
 	memset(gatt, 0, gatt_size); 
 	agp_gatt_table = gatt;
 

arch/x86_64/mm/pageattr.c

@@ -81,8 +81,8 @@ static void flush_kernel_map(void *arg)
 		void *adr = page_address(pg);
 		if (cpu_has_clflush)
 			cache_flush_page(adr);
-		__flush_tlb_one(adr);
 	}
+	__flush_tlb_all();
 }
 
 static inline void flush_map(struct list_head *l)