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mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
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Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core

Browse source
This commit is contained in:
Ingo Molnar 2008-12-23 16:27:23 +01:00
commit fa623d1b02
173 changed files with 4084 additions and 3158 deletions
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70
mm/memory.c
View file

@ -669,6 +669,16 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
if (is_vm_hugetlb_page(vma))
return copy_hugetlb_page_range(dst_mm, src_mm, vma);
if (unlikely(is_pfn_mapping(vma))) {
/*
* We do not free on error cases below as remove_vma
* gets called on error from higher level routine
*/
ret = track_pfn_vma_copy(vma);
if (ret)
return ret;
}
/*
* We need to invalidate the secondary MMU mappings only when
* there could be a permission downgrade on the ptes of the
@ -915,6 +925,9 @@ unsigned long unmap_vmas(struct mmu_gather **tlbp,
if (vma->vm_flags & VM_ACCOUNT)
*nr_accounted += (end - start) >> PAGE_SHIFT;
if (unlikely(is_pfn_mapping(vma)))
untrack_pfn_vma(vma, 0, 0);
while (start != end) {
if (!tlb_start_valid) {
tlb_start = start;
@ -1430,6 +1443,7 @@ out:
int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr,
unsigned long pfn)
{
int ret;
/*
* Technically, architectures with pte_special can avoid all these
* restrictions (same for remap_pfn_range). However we would like
@ -1444,7 +1458,15 @@ int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr,
if (addr < vma->vm_start || addr >= vma->vm_end)
return -EFAULT;
return insert_pfn(vma, addr, pfn, vma->vm_page_prot);
if (track_pfn_vma_new(vma, vma->vm_page_prot, pfn, PAGE_SIZE))
return -EINVAL;
ret = insert_pfn(vma, addr, pfn, vma->vm_page_prot);
if (ret)
untrack_pfn_vma(vma, pfn, PAGE_SIZE);
return ret;
}
EXPORT_SYMBOL(vm_insert_pfn);
@ -1575,14 +1597,17 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
* behaviour that some programs depend on. We mark the "original"
* un-COW'ed pages by matching them up with "vma->vm_pgoff".
*/
if (is_cow_mapping(vma->vm_flags)) {
if (addr != vma->vm_start || end != vma->vm_end)
return -EINVAL;
if (addr == vma->vm_start && end == vma->vm_end)
vma->vm_pgoff = pfn;
}
else if (is_cow_mapping(vma->vm_flags))
return -EINVAL;
vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP;
err = track_pfn_vma_new(vma, prot, pfn, PAGE_ALIGN(size));
if (err)
return -EINVAL;
BUG_ON(addr >= end);
pfn -= addr >> PAGE_SHIFT;
pgd = pgd_offset(mm, addr);
@ -1594,6 +1619,10 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
if (err)
break;
} while (pgd++, addr = next, addr != end);
if (err)
untrack_pfn_vma(vma, pfn, PAGE_ALIGN(size));
return err;
}
EXPORT_SYMBOL(remap_pfn_range);
@ -2865,9 +2894,9 @@ int in_gate_area_no_task(unsigned long addr)
#endif /* __HAVE_ARCH_GATE_AREA */
#ifdef CONFIG_HAVE_IOREMAP_PROT
static resource_size_t follow_phys(struct vm_area_struct *vma,
unsigned long address, unsigned int flags,
unsigned long *prot)
int follow_phys(struct vm_area_struct *vma,
unsigned long address, unsigned int flags,
unsigned long *prot, resource_size_t *phys)
{
pgd_t *pgd;
pud_t *pud;
@ -2876,24 +2905,26 @@ static resource_size_t follow_phys(struct vm_area_struct *vma,
spinlock_t *ptl;
resource_size_t phys_addr = 0;
struct mm_struct *mm = vma->vm_mm;
int ret = -EINVAL;
VM_BUG_ON(!(vma->vm_flags & (VM_IO | VM_PFNMAP)));
if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)))
goto out;
pgd = pgd_offset(mm, address);
if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
goto no_page_table;
goto out;
pud = pud_offset(pgd, address);
if (pud_none(*pud) || unlikely(pud_bad(*pud)))
goto no_page_table;
goto out;
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
goto no_page_table;
goto out;
/* We cannot handle huge page PFN maps. Luckily they don't exist. */
if (pmd_huge(*pmd))
goto no_page_table;
goto out;
ptep = pte_offset_map_lock(mm, pmd, address, &ptl);
if (!ptep)
@ -2908,13 +2939,13 @@ static resource_size_t follow_phys(struct vm_area_struct *vma,
phys_addr <<= PAGE_SHIFT; /* Shift here to avoid overflow on PAE */
*prot = pgprot_val(pte_pgprot(pte));
*phys = phys_addr;
ret = 0;
unlock:
pte_unmap_unlock(ptep, ptl);
out:
return phys_addr;
no_page_table:
return 0;
return ret;
}
int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
@ -2925,12 +2956,7 @@ int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
void *maddr;
int offset = addr & (PAGE_SIZE-1);
if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)))
return -EINVAL;
phys_addr = follow_phys(vma, addr, write, &prot);
if (!phys_addr)
if (follow_phys(vma, addr, write, &prot, &phys_addr))
return -EINVAL;
maddr = ioremap_prot(phys_addr, PAGE_SIZE, prot);

9
mm/swapfile.c
View file

@ -1462,6 +1462,15 @@ static int __init procswaps_init(void)
__initcall(procswaps_init);
#endif /* CONFIG_PROC_FS */
#ifdef MAX_SWAPFILES_CHECK
static int __init max_swapfiles_check(void)
{
MAX_SWAPFILES_CHECK();
return 0;
}
late_initcall(max_swapfiles_check);
#endif
/*
* Written 01/25/92 by Simmule Turner, heavily changed by Linus.
*