From f4ab51df7f9ed783dbcfbecffc0a9d919c501135 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Matteo=20Gm=C3=BCr?= Date: Sat, 26 Oct 2024 11:44:12 +0000 Subject: Write P3 table into P4 table at index 0 --- arch/x86_64/src/memory/paging/page_entry.cpp | 6 ++++++ arch/x86_64/src/memory/paging/page_table.cpp | 2 ++ 2 files changed, 8 insertions(+) (limited to 'arch/x86_64/src') diff --git a/arch/x86_64/src/memory/paging/page_entry.cpp b/arch/x86_64/src/memory/paging/page_entry.cpp index 5d597ab..09d048b 100644 --- a/arch/x86_64/src/memory/paging/page_entry.cpp +++ b/arch/x86_64/src/memory/paging/page_entry.cpp @@ -4,6 +4,12 @@ namespace teachos::arch::memory::paging { + entry::entry(uint64_t flags) + : flags(flags) + { + // Nothing to do. + } + auto entry::is_unused() const -> bool { return flags == 0U; } auto entry::set_unused() -> void { flags = 0U; } diff --git a/arch/x86_64/src/memory/paging/page_table.cpp b/arch/x86_64/src/memory/paging/page_table.cpp index c0f199a..4747e0b 100644 --- a/arch/x86_64/src/memory/paging/page_table.cpp +++ b/arch/x86_64/src/memory/paging/page_table.cpp @@ -123,6 +123,8 @@ namespace teachos::arch::memory::paging std::construct_at(reinterpret_cast(&_end_of_image + offset)); } } + size_t const flags = reinterpret_cast(level3_page_table); + this->operator[](0U) = entry{flags}; } auto page_table_handle::zero_entries() -> void { handle->zero_entries(); } -- cgit v1.2.3