redonkable/alistair23-linux
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Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6

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* '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
This commit is contained in:
Linus Torvalds 2007-04-24 09:36:53 -07:00
parent 32bd33e21e 8689b517be
commit d80a792073
5 changed files with 12 additions and 29 deletions
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4
Documentation/x86_64/boot-options.txt
View file

@ -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.

21
arch/i386/kernel/alternative.c
View file

@ -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);

8
arch/i386/kernel/nmi.c
View file

@ -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)

6
arch/x86_64/kernel/pci-gart.c
View file

@ -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;

2
arch/x86_64/mm/pageattr.c
View file

@ -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)