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kern: use callback to note pte updates in KPageTableImpl

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This commit is contained in:
Michael Scire
2025-04-30 22:31:25 -07:00
committed by SciresM
parent 28296e2aac
commit 4580a352c0
4 changed files with 21 additions and 12 deletions
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5
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table.hpp
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@@ -200,6 +200,11 @@ namespace ams::kern::arch::arm64 {
NOINLINE Result InitializeForKernel(void *table, KVirtualAddress start, KVirtualAddress end);
NOINLINE Result InitializeForProcess(ams::svc::CreateProcessFlag flags, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KSystemResource *system_resource, KResourceLimit *resource_limit, size_t process_index);
Result Finalize();
static void NoteUpdatedCallback(const void *pt) {
/* Note the update. */
static_cast<const KPageTable *>(pt)->NoteUpdated();
}
private:
Result Unmap(KProcessAddress virt_addr, size_t num_pages, PageLinkedList *page_list, bool force, bool reuse_ll);

6
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_impl.hpp
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@@ -49,6 +49,8 @@ namespace ams::kern::arch::arm64 {
EntryLevel level;
bool is_contiguous;
};
using EntryUpdatedCallback = void (*)(const void *);
private:
static constexpr size_t PageBits = util::CountTrailingZeros(PageSize);
static constexpr size_t NumLevels = 3;
@@ -144,8 +146,8 @@ namespace ams::kern::arch::arm64 {
bool GetPhysicalAddress(KPhysicalAddress *out, KProcessAddress virt_addr) const;
static bool MergePages(KVirtualAddress *out, TraversalContext *context);
void SeparatePages(TraversalEntry *entry, TraversalContext *context, KProcessAddress address, PageTableEntry *pte) const;
static bool MergePages(KVirtualAddress *out, TraversalContext *context, EntryUpdatedCallback on_entry_updated, const void *pt);
void SeparatePages(TraversalEntry *entry, TraversalContext *context, KProcessAddress address, PageTableEntry *pte, EntryUpdatedCallback on_entry_updated, const void *pt) const;
KProcessAddress GetAddressForContext(const TraversalContext *context) const {
KProcessAddress addr = m_is_kernel ? static_cast<uintptr_t>(-GetBlockSize(EntryLevel_L1)) * m_num_entries : 0;