feat(kernel, sched): Architectural improvements, and cleaned up

the codebase from previous implementations that didn't work/scale well.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 2 insertions, 52 deletions

diff --git a/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc b/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc
index e0b67489..faad6778 100644
--- a/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc
+++ b/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc
@@ -13,65 +13,15 @@
 namespace Kernel::HAL {
 typedef UInt32 PageTableIndex;
 
-/// \brief Page store type.
-struct NE_PAGE_STORE final {
-  struct {
-    PDE*    fPde{nullptr};
-    PTE*    fPte{nullptr};
-    VoidPtr fVAddr{nullptr};
-  } fInternalStore;
-
-  Bool fStoreOp{No};  // Store operation in progress.
-
-  static NE_PAGE_STORE& The() {
-    static NE_PAGE_STORE the;
-    return the;
-  }
-};
-
-/// \brief Retrieve the page status of a PTE.
-STATIC Void mmi_page_status(PTE* pte) {
-  NE_UNUSED(pte);
-}
-
-STATIC Int32 mmi_map_page_table_entry(VoidPtr virtual_address, UInt32 flags, PTE* pt_entry);
-
 /// @brief Maps or allocates a page from virtual_address.
 /// @param virtual_address a valid virtual address.
 /// @param phys_addr point to physical address.
 /// @param flags the flags to put on the page.
 /// @return Status code of page manipulation process.
 EXTERN_C Int32 mm_map_page(VoidPtr virtual_address, VoidPtr physical_address, UInt32 flags) {
-  if (!virtual_address || !flags) return kErrorSuccess;
-
-  NE_PAGE_STORE& page_store = NE_PAGE_STORE::The();
-
-  while (page_store.fStoreOp)
-    ;
-
-  page_store.fStoreOp = Yes;
-
-  if (page_store.fInternalStore.fVAddr == virtual_address) {
-    page_store.fStoreOp = No;
-    return mmi_map_page_table_entry(page_store.fInternalStore.fVAddr, flags,
-                                    page_store.fInternalStore.fPte);
-  }
-
-  return kErrorSuccess;
-}
-
-/// @brief Maps flags for a specific pte.
-/// @internal Internal function.
-STATIC Int32 mmi_map_page_table_entry(VoidPtr virtual_address, UInt32 flags, PTE* pt_entry) {
-  NE_PAGE_STORE& page_store = NE_PAGE_STORE::The();
-
-  // Update internal store, and tlbi the virtual address.
-
-  page_store.fInternalStore.fPde   = nullptr;
-  page_store.fInternalStore.fPte   = pt_entry;
-  page_store.fInternalStore.fVAddr = virtual_address;
+  if (!virtual_address || !flags) return kErrorInvalidData;
 
-  page_store.fStoreOp = No;
+  NE_UNUSED(physical_address);
 
   return kErrorSuccess;
 }