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Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, pat: Fix cacheflush address in change_page_attr_set_clr()
  mm: remove !NUMA condition from PAGEFLAGS_EXTENDED condition set
  x86: Fix earlyprintk=dbgp for machines without NX
  x86, pat: Sanity check remap_pfn_range for RAM region
  x86, pat: Lookup the protection from memtype list on vm_insert_pfn()
  x86, pat: Add lookup_memtype to get the current memtype of a paddr
  x86, pat: Use page flags to track memtypes of RAM pages
  x86, pat: Generalize the use of page flag PG_uncached
  x86, pat: Add rbtree to do quick lookup in memtype tracking
  x86, pat: Add PAT reserve free to io_mapping* APIs
  x86, pat: New i/f for driver to request memtype for IO regions
  x86, pat: ioremap to follow same PAT restrictions as other PAT users
  x86, pat: Keep identity maps consistent with mmaps even when pat_disabled
  x86, mtrr: make mtrr_aps_delayed_init static bool
  x86, pat/mtrr: Rendezvous all the cpus for MTRR/PAT init
  generic-ipi: Allow cpus not yet online to call smp_call_function with irqs disabled
  x86: Fix an incorrect argument of reserve_bootmem()
  x86: Fix system crash when loading with "reservetop" parameter
This commit is contained in:
Linus Torvalds
2009-09-15 09:19:38 -07:00
parent 1aaf2e5913 fa526d0d64
commit 227423904c
19 changed files with 510 additions and 143 deletions
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46
arch/x86/kernel/cpu/mtrr/main.c
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@ -58,6 +58,7 @@ unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];
static DEFINE_MUTEX(mtrr_mutex);
u64 size_or_mask, size_and_mask;
static bool mtrr_aps_delayed_init;
static struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM];
@ -163,7 +164,10 @@ static void ipi_handler(void *info)
if (data->smp_reg != ~0U) {
mtrr_if->set(data->smp_reg, data->smp_base,
data->smp_size, data->smp_type);
} else {
} else if (mtrr_aps_delayed_init) {
/*
* Initialize the MTRRs inaddition to the synchronisation.
*/
mtrr_if->set_all();
}
@ -265,6 +269,8 @@ set_mtrr(unsigned int reg, unsigned long base, unsigned long size, mtrr_type typ
*/
if (reg != ~0U)
mtrr_if->set(reg, base, size, type);
else if (!mtrr_aps_delayed_init)
mtrr_if->set_all();
/* Wait for the others */
while (atomic_read(&data.count))
@ -721,9 +727,7 @@ void __init mtrr_bp_init(void)
void mtrr_ap_init(void)
{
unsigned long flags;
if (!mtrr_if || !use_intel())
if (!use_intel() || mtrr_aps_delayed_init)
return;
/*
* Ideally we should hold mtrr_mutex here to avoid mtrr entries
@ -738,11 +742,7 @@ void mtrr_ap_init(void)
* 2. cpu hotadd time. We let mtrr_add/del_page hold cpuhotplug
* lock to prevent mtrr entry changes
*/
local_irq_save(flags);
mtrr_if->set_all();
local_irq_restore(flags);
set_mtrr(~0U, 0, 0, 0);
}
/**
@ -753,6 +753,34 @@ void mtrr_save_state(void)
smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1);
}
void set_mtrr_aps_delayed_init(void)
{
if (!use_intel())
return;
mtrr_aps_delayed_init = true;
}
/*
* MTRR initialization for all AP's
*/
void mtrr_aps_init(void)
{
if (!use_intel())
return;
set_mtrr(~0U, 0, 0, 0);
mtrr_aps_delayed_init = false;
}
void mtrr_bp_restore(void)
{
if (!use_intel())
return;
mtrr_if->set_all();
}
static int __init mtrr_init_finialize(void)
{
if (!mtrr_if)