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Kernel: Make MemoryManager API type-safe for Region::Access enum

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Increase type-safety moving the MemoryManager APIs which take a
Region::Access to actually use that type instead of a `u8`.

Eventually the actually m_access can be moved there as well, but
I hit some weird bug where it wasn't using the correct operators
in `set_access_bit(..)` even though it's declared (and tested).
Something to fix-up later.
This commit is contained in:
Brian Gianforcaro 2021-03-06 19:33:25 -08:00 • committed by Andreas Kling
parent c825159f01
commit eaef57443c
6 changed files with 39 additions and 35 deletions
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10
Kernel/VM/Region.cpp
View file

@ -39,7 +39,7 @@
namespace Kernel {
Region::Region(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, String name, u8 access, Cacheable cacheable, bool shared)
Region::Region(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, String name, Region::Access access, Cacheable cacheable, bool shared)
: PurgeablePageRanges(vmobject)
, m_range(range)
, m_offset_in_vmobject(offset_in_vmobject)
@ -104,7 +104,7 @@ OwnPtr<Region> Region::clone(Process& new_owner)
// Create a new region backed by the same VMObject.
auto region = Region::create_user_accessible(
&new_owner, m_range, m_vmobject, m_offset_in_vmobject, m_name, m_access, m_cacheable ? Cacheable::Yes : Cacheable::No, m_shared);
&new_owner, m_range, m_vmobject, m_offset_in_vmobject, m_name, access(), m_cacheable ? Cacheable::Yes : Cacheable::No, m_shared);
if (m_vmobject->is_anonymous())
region->copy_purgeable_page_ranges(*this);
region->set_mmap(m_mmap);
@ -123,7 +123,7 @@ OwnPtr<Region> Region::clone(Process& new_owner)
// Set up a COW region. The parent (this) region becomes COW as well!
remap();
auto clone_region = Region::create_user_accessible(
&new_owner, m_range, vmobject_clone.release_nonnull(), m_offset_in_vmobject, m_name, m_access, m_cacheable ? Cacheable::Yes : Cacheable::No, m_shared);
&new_owner, m_range, vmobject_clone.release_nonnull(), m_offset_in_vmobject, m_name, access(), m_cacheable ? Cacheable::Yes : Cacheable::No, m_shared);
if (m_vmobject->is_anonymous())
clone_region->copy_purgeable_page_ranges(*this);
if (m_stack) {
@ -228,7 +228,7 @@ size_t Region::amount_shared() const
return bytes;
}
NonnullOwnPtr<Region> Region::create_user_accessible(Process* owner, const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, String name, u8 access, Cacheable cacheable, bool shared)
NonnullOwnPtr<Region> Region::create_user_accessible(Process* owner, const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, String name, Region::Access access, Cacheable cacheable, bool shared)
{
auto region = adopt_own(*new Region(range, move(vmobject), offset_in_vmobject, move(name), access, cacheable, shared));
if (owner)
@ -236,7 +236,7 @@ NonnullOwnPtr<Region> Region::create_user_accessible(Process* owner, const Range
return region;
}
NonnullOwnPtr<Region> Region::create_kernel_only(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, String name, u8 access, Cacheable cacheable)
NonnullOwnPtr<Region> Region::create_kernel_only(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, String name, Region::Access access, Cacheable cacheable)
{
return adopt_own(*new Region(range, move(vmobject), offset_in_vmobject, move(name), access, cacheable, false));
}