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Kernel: Remove ability to create kernel-only regions at user addresses

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This was only used by the mechanism for mapping executables into each
process's own address space. Now that we remap executables on demand
when needed for symbolication, this can go away.
This commit is contained in:
Andreas Kling 2020-03-02 10:46:24 +01:00
parent e56f8706ce
commit 47beab926d
2 changed files with 8 additions and 12 deletions
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16
Kernel/Process.cpp
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@ -207,7 +207,7 @@ Region* Process::allocate_region(VirtualAddress vaddr, size_t size, const String
return allocate_region(range, name, prot, commit);
}
Region* Process::allocate_region_with_vmobject(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot, bool user_accessible)
Region* Process::allocate_region_with_vmobject(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot)
{
ASSERT(range.is_valid());
size_t end_in_vmobject = offset_in_vmobject + range.size();
@ -224,21 +224,17 @@ Region* Process::allocate_region_with_vmobject(const Range& range, NonnullRefPtr
return nullptr;
}
offset_in_vmobject &= PAGE_MASK;
Region* region;
if (user_accessible)
region = &add_region(Region::create_user_accessible(range, move(vmobject), offset_in_vmobject, name, prot_to_region_access_flags(prot)));
else
region = &add_region(Region::create_kernel_only(range, move(vmobject), offset_in_vmobject, name, prot_to_region_access_flags(prot)));
region->map(page_directory());
return region;
auto& region = add_region(Region::create_user_accessible(range, move(vmobject), offset_in_vmobject, name, prot_to_region_access_flags(prot)));
region.map(page_directory());
return &region;
}
Region* Process::allocate_region_with_vmobject(VirtualAddress vaddr, size_t size, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot, bool user_accessible)
Region* Process::allocate_region_with_vmobject(VirtualAddress vaddr, size_t size, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot)
{
auto range = allocate_range(vaddr, size);
if (!range.is_valid())
return nullptr;
return allocate_region_with_vmobject(range, move(vmobject), offset_in_vmobject, name, prot, user_accessible);
return allocate_region_with_vmobject(range, move(vmobject), offset_in_vmobject, name, prot);
}
bool Process::deallocate_region(Region& region)