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author | liamwhite <liamwhite@users.noreply.github.com> | 2023-01-10 21:27:33 +0100 |
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committer | GitHub <noreply@github.com> | 2023-01-10 21:27:33 +0100 |
commit | cbcf210c19b3661e0edda03f22ef323cb5b30c26 (patch) | |
tree | f48957b563b25e43c180ada20c144f5a4749bdca /src/core/hle/kernel/k_page_table.cpp | |
parent | Merge pull request #9601 from liamwhite/it-never-ends (diff) | |
parent | Revert "Revert "k_page_group: synchronize"" (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/k_page_table.cpp | 142 |
1 files changed, 70 insertions, 72 deletions
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp index 612fc76fa..9c7ac22dc 100644 --- a/src/core/hle/kernel/k_page_table.cpp +++ b/src/core/hle/kernel/k_page_table.cpp @@ -100,7 +100,7 @@ constexpr size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceType a KPageTable::KPageTable(Core::System& system_) : m_general_lock{system_.Kernel()}, - m_map_physical_memory_lock{system_.Kernel()}, m_system{system_} {} + m_map_physical_memory_lock{system_.Kernel()}, m_system{system_}, m_kernel{system_.Kernel()} {} KPageTable::~KPageTable() = default; @@ -373,7 +373,7 @@ Result KPageTable::MapProcessCode(VAddr addr, size_t num_pages, KMemoryState sta m_memory_block_slab_manager); // Allocate and open. - KPageGroup pg; + KPageGroup pg{m_kernel, m_block_info_manager}; R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpen( &pg, num_pages, KMemoryManager::EncodeOption(KMemoryManager::Pool::Application, m_allocation_option))); @@ -432,7 +432,7 @@ Result KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, size_t si const size_t num_pages = size / PageSize; // Create page groups for the memory being mapped. - KPageGroup pg; + KPageGroup pg{m_kernel, m_block_info_manager}; AddRegionToPages(src_address, num_pages, pg); // Reprotect the source as kernel-read/not mapped. @@ -593,7 +593,7 @@ Result KPageTable::MakePageGroup(KPageGroup& pg, VAddr addr, size_t num_pages) { const size_t size = num_pages * PageSize; // We're making a new group, not adding to an existing one. - R_UNLESS(pg.Empty(), ResultInvalidCurrentMemory); + R_UNLESS(pg.empty(), ResultInvalidCurrentMemory); // Begin traversal. Common::PageTable::TraversalContext context; @@ -640,11 +640,10 @@ Result KPageTable::MakePageGroup(KPageGroup& pg, VAddr addr, size_t num_pages) { R_SUCCEED(); } -bool KPageTable::IsValidPageGroup(const KPageGroup& pg_ll, VAddr addr, size_t num_pages) { +bool KPageTable::IsValidPageGroup(const KPageGroup& pg, VAddr addr, size_t num_pages) { ASSERT(this->IsLockedByCurrentThread()); const size_t size = num_pages * PageSize; - const auto& pg = pg_ll.Nodes(); const auto& memory_layout = m_system.Kernel().MemoryLayout(); // Empty groups are necessarily invalid. @@ -942,9 +941,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add ON_RESULT_FAILURE { if (cur_mapped_addr != dst_addr) { - // HACK: Manually close the pages. - HACK_ClosePages(dst_addr, (cur_mapped_addr - dst_addr) / PageSize); - ASSERT(Operate(dst_addr, (cur_mapped_addr - dst_addr) / PageSize, KMemoryPermission::None, OperationType::Unmap) .IsSuccess()); @@ -1020,9 +1016,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add // Map the page. R_TRY(Operate(cur_mapped_addr, 1, test_perm, OperationType::Map, start_partial_page)); - // HACK: Manually open the pages. - HACK_OpenPages(start_partial_page, 1); - // Update tracking extents. cur_mapped_addr += PageSize; cur_block_addr += PageSize; @@ -1051,9 +1044,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add R_TRY(Operate(cur_mapped_addr, cur_block_size / PageSize, test_perm, OperationType::Map, cur_block_addr)); - // HACK: Manually open the pages. - HACK_OpenPages(cur_block_addr, cur_block_size / PageSize); - // Update tracking extents. cur_mapped_addr += cur_block_size; cur_block_addr = next_entry.phys_addr; @@ -1073,9 +1063,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add R_TRY(Operate(cur_mapped_addr, last_block_size / PageSize, test_perm, OperationType::Map, cur_block_addr)); - // HACK: Manually open the pages. - HACK_OpenPages(cur_block_addr, last_block_size / PageSize); - // Update tracking extents. cur_mapped_addr += last_block_size; cur_block_addr += last_block_size; @@ -1107,9 +1094,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add // Map the page. R_TRY(Operate(cur_mapped_addr, 1, test_perm, OperationType::Map, end_partial_page)); - - // HACK: Manually open the pages. - HACK_OpenPages(end_partial_page, 1); } // Update memory blocks to reflect our changes @@ -1211,9 +1195,6 @@ Result KPageTable::CleanupForIpcServer(VAddr address, size_t size, KMemoryState const size_t aligned_size = aligned_end - aligned_start; const size_t aligned_num_pages = aligned_size / PageSize; - // HACK: Manually close the pages. - HACK_ClosePages(aligned_start, aligned_num_pages); - // Unmap the pages. R_TRY(Operate(aligned_start, aligned_num_pages, KMemoryPermission::None, OperationType::Unmap)); @@ -1501,17 +1482,6 @@ void KPageTable::CleanupForIpcClientOnServerSetupFailure([[maybe_unused]] PageLi } } -void KPageTable::HACK_OpenPages(PAddr phys_addr, size_t num_pages) { - m_system.Kernel().MemoryManager().OpenFirst(phys_addr, num_pages); -} - -void KPageTable::HACK_ClosePages(VAddr virt_addr, size_t num_pages) { - for (size_t index = 0; index < num_pages; ++index) { - const auto paddr = GetPhysicalAddr(virt_addr + (index * PageSize)); - m_system.Kernel().MemoryManager().Close(paddr, 1); - } -} - Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { // Lock the physical memory lock. KScopedLightLock phys_lk(m_map_physical_memory_lock); @@ -1572,7 +1542,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached); // Allocate pages for the new memory. - KPageGroup pg; + KPageGroup pg{m_kernel, m_block_info_manager}; R_TRY(m_system.Kernel().MemoryManager().AllocateForProcess( &pg, (size - mapped_size) / PageSize, m_allocate_option, 0, 0)); @@ -1650,7 +1620,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { KScopedPageTableUpdater updater(this); // Prepare to iterate over the memory. - auto pg_it = pg.Nodes().begin(); + auto pg_it = pg.begin(); PAddr pg_phys_addr = pg_it->GetAddress(); size_t pg_pages = pg_it->GetNumPages(); @@ -1680,9 +1650,6 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { last_unmap_address + 1 - cur_address) / PageSize; - // HACK: Manually close the pages. - HACK_ClosePages(cur_address, cur_pages); - // Unmap. ASSERT(Operate(cur_address, cur_pages, KMemoryPermission::None, OperationType::Unmap) @@ -1703,7 +1670,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { // Release any remaining unmapped memory. m_system.Kernel().MemoryManager().OpenFirst(pg_phys_addr, pg_pages); m_system.Kernel().MemoryManager().Close(pg_phys_addr, pg_pages); - for (++pg_it; pg_it != pg.Nodes().end(); ++pg_it) { + for (++pg_it; pg_it != pg.end(); ++pg_it) { m_system.Kernel().MemoryManager().OpenFirst(pg_it->GetAddress(), pg_it->GetNumPages()); m_system.Kernel().MemoryManager().Close(pg_it->GetAddress(), @@ -1731,7 +1698,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { // Check if we're at the end of the physical block. if (pg_pages == 0) { // Ensure there are more pages to map. - ASSERT(pg_it != pg.Nodes().end()); + ASSERT(pg_it != pg.end()); // Advance our physical block. ++pg_it; @@ -1742,10 +1709,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) { // Map whatever we can. const size_t cur_pages = std::min(pg_pages, map_pages); R_TRY(Operate(cur_address, cur_pages, KMemoryPermission::UserReadWrite, - OperationType::Map, pg_phys_addr)); - - // HACK: Manually open the pages. - HACK_OpenPages(pg_phys_addr, cur_pages); + OperationType::MapFirst, pg_phys_addr)); // Advance. cur_address += cur_pages * PageSize; @@ -1888,9 +1852,6 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) { last_address + 1 - cur_address) / PageSize; - // HACK: Manually close the pages. - HACK_ClosePages(cur_address, cur_pages); - // Unmap. ASSERT(Operate(cur_address, cur_pages, KMemoryPermission::None, OperationType::Unmap) .IsSuccess()); @@ -1955,7 +1916,7 @@ Result KPageTable::MapMemory(VAddr dst_address, VAddr src_address, size_t size) R_TRY(dst_allocator_result); // Map the memory. - KPageGroup page_linked_list; + KPageGroup page_linked_list{m_kernel, m_block_info_manager}; const size_t num_pages{size / PageSize}; const KMemoryPermission new_src_perm = static_cast<KMemoryPermission>( KMemoryPermission::KernelRead | KMemoryPermission::NotMapped); @@ -2022,14 +1983,14 @@ Result KPageTable::UnmapMemory(VAddr dst_address, VAddr src_address, size_t size num_dst_allocator_blocks); R_TRY(dst_allocator_result); - KPageGroup src_pages; - KPageGroup dst_pages; + KPageGroup src_pages{m_kernel, m_block_info_manager}; + KPageGroup dst_pages{m_kernel, m_block_info_manager}; const size_t num_pages{size / PageSize}; AddRegionToPages(src_address, num_pages, src_pages); AddRegionToPages(dst_address, num_pages, dst_pages); - R_UNLESS(dst_pages.IsEqual(src_pages), ResultInvalidMemoryRegion); + R_UNLESS(dst_pages.IsEquivalentTo(src_pages), ResultInvalidMemoryRegion); { auto block_guard = detail::ScopeExit([&] { MapPages(dst_address, dst_pages, dst_perm); }); @@ -2060,7 +2021,7 @@ Result KPageTable::MapPages(VAddr addr, const KPageGroup& page_linked_list, VAddr cur_addr{addr}; - for (const auto& node : page_linked_list.Nodes()) { + for (const auto& node : page_linked_list) { if (const auto result{ Operate(cur_addr, node.GetNumPages(), perm, OperationType::Map, node.GetAddress())}; result.IsError()) { @@ -2160,7 +2121,7 @@ Result KPageTable::UnmapPages(VAddr addr, const KPageGroup& page_linked_list) { VAddr cur_addr{addr}; - for (const auto& node : page_linked_list.Nodes()) { + for (const auto& node : page_linked_list) { if (const auto result{Operate(cur_addr, node.GetNumPages(), KMemoryPermission::None, OperationType::Unmap)}; result.IsError()) { @@ -2527,13 +2488,13 @@ Result KPageTable::SetHeapSize(VAddr* out, size_t size) { R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached); // Allocate pages for the heap extension. - KPageGroup pg; + KPageGroup pg{m_kernel, m_block_info_manager}; R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpen( &pg, allocation_size / PageSize, KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option))); // Clear all the newly allocated pages. - for (const auto& it : pg.Nodes()) { + for (const auto& it : pg) { std::memset(m_system.DeviceMemory().GetPointer<void>(it.GetAddress()), m_heap_fill_value, it.GetSize()); } @@ -2610,11 +2571,23 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(size_t needed_num_pages, size_ if (is_map_only) { R_TRY(Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr)); } else { - KPageGroup page_group; - R_TRY(m_system.Kernel().MemoryManager().AllocateForProcess( - &page_group, needed_num_pages, - KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option), 0, 0)); - R_TRY(Operate(addr, needed_num_pages, page_group, OperationType::MapGroup)); + // Create a page group tohold the pages we allocate. + KPageGroup pg{m_kernel, m_block_info_manager}; + + R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpen( + &pg, needed_num_pages, + KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option))); + + // Ensure that the page group is closed when we're done working with it. + SCOPE_EXIT({ pg.Close(); }); + + // Clear all pages. + for (const auto& it : pg) { + std::memset(m_system.DeviceMemory().GetPointer<void>(it.GetAddress()), + m_heap_fill_value, it.GetSize()); + } + + R_TRY(Operate(addr, needed_num_pages, pg, OperationType::MapGroup)); } // Update the blocks. @@ -2795,19 +2768,28 @@ Result KPageTable::Operate(VAddr addr, size_t num_pages, const KPageGroup& page_ ASSERT(num_pages > 0); ASSERT(num_pages == page_group.GetNumPages()); - for (const auto& node : page_group.Nodes()) { - const size_t size{node.GetNumPages() * PageSize}; + switch (operation) { + case OperationType::MapGroup: { + // We want to maintain a new reference to every page in the group. + KScopedPageGroup spg(page_group); + + for (const auto& node : page_group) { + const size_t size{node.GetNumPages() * PageSize}; - switch (operation) { - case OperationType::MapGroup: + // Map the pages. m_system.Memory().MapMemoryRegion(*m_page_table_impl, addr, size, node.GetAddress()); - break; - default: - ASSERT(false); - break; + + addr += size; } - addr += size; + // We succeeded! We want to persist the reference to the pages. + spg.CancelClose(); + + break; + } + default: + ASSERT(false); + break; } R_SUCCEED(); @@ -2822,13 +2804,29 @@ Result KPageTable::Operate(VAddr addr, size_t num_pages, KMemoryPermission perm, ASSERT(ContainsPages(addr, num_pages)); switch (operation) { - case OperationType::Unmap: + case OperationType::Unmap: { + // Ensure that any pages we track close on exit. + KPageGroup pages_to_close{m_kernel, this->GetBlockInfoManager()}; + SCOPE_EXIT({ pages_to_close.CloseAndReset(); }); + + this->AddRegionToPages(addr, num_pages, pages_to_close); m_system.Memory().UnmapRegion(*m_page_table_impl, addr, num_pages * PageSize); break; + } + case OperationType::MapFirst: case OperationType::Map: { ASSERT(map_addr); ASSERT(Common::IsAligned(map_addr, PageSize)); m_system.Memory().MapMemoryRegion(*m_page_table_impl, addr, num_pages * PageSize, map_addr); + + // Open references to pages, if we should. + if (IsHeapPhysicalAddress(m_kernel.MemoryLayout(), map_addr)) { + if (operation == OperationType::MapFirst) { + m_kernel.MemoryManager().OpenFirst(map_addr, num_pages); + } else { + m_kernel.MemoryManager().Open(map_addr, num_pages); + } + } break; } case OperationType::Separate: { |