hle: kernel: k_memory_manager: Rework for latest kernel behavior.
- Updates the KMemoryManager implementation against latest documentation. - Reworks KMemoryLayout to be accessed throughout the kernel. - Fixes an issue with pool sizes being incorrectly reported.
This commit is contained in:
bunnei
@@ -10,189 +10,412 @@
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#include "common/scope_exit.h"
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#include "core/core.h"
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#include "core/device_memory.h"
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#include "core/hle/kernel/initial_process.h"
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#include "core/hle/kernel/k_memory_manager.h"
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#include "core/hle/kernel/k_page_linked_list.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/svc_results.h"
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#include "core/memory.h"
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namespace Kernel {
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KMemoryManager::KMemoryManager(Core::System& system_) : system{system_} {}
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namespace {
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std::size_t KMemoryManager::Impl::Initialize(Pool new_pool, u64 start_address, u64 end_address) {
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const auto size{end_address - start_address};
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// Calculate metadata sizes
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const auto ref_count_size{(size / PageSize) * sizeof(u16)};
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const auto optimize_map_size{(Common::AlignUp((size / PageSize), 64) / 64) * sizeof(u64)};
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const auto manager_size{Common::AlignUp(optimize_map_size + ref_count_size, PageSize)};
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const auto page_heap_size{KPageHeap::CalculateManagementOverheadSize(size)};
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const auto total_metadata_size{manager_size + page_heap_size};
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ASSERT(manager_size <= total_metadata_size);
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ASSERT(Common::IsAligned(total_metadata_size, PageSize));
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// Setup region
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pool = new_pool;
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// Initialize the manager's KPageHeap
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heap.Initialize(start_address, size, page_heap_size);
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// Free the memory to the heap
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heap.Free(start_address, size / PageSize);
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// Update the heap's used size
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heap.UpdateUsedSize();
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return total_metadata_size;
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constexpr KMemoryManager::Pool GetPoolFromMemoryRegionType(u32 type) {
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if ((type | KMemoryRegionType_DramApplicationPool) == type) {
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return KMemoryManager::Pool::Application;
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} else if ((type | KMemoryRegionType_DramAppletPool) == type) {
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return KMemoryManager::Pool::Applet;
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} else if ((type | KMemoryRegionType_DramSystemPool) == type) {
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return KMemoryManager::Pool::System;
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} else if ((type | KMemoryRegionType_DramSystemNonSecurePool) == type) {
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return KMemoryManager::Pool::SystemNonSecure;
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} else {
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UNREACHABLE_MSG("InvalidMemoryRegionType for conversion to Pool");
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return {};
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}
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}
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void KMemoryManager::InitializeManager(Pool pool, u64 start_address, u64 end_address) {
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ASSERT(pool < Pool::Count);
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managers[static_cast<std::size_t>(pool)].Initialize(pool, start_address, end_address);
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} // namespace
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KMemoryManager::KMemoryManager(Core::System& system_)
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: system{system_}, pool_locks{
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KLightLock{system_.Kernel()},
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KLightLock{system_.Kernel()},
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KLightLock{system_.Kernel()},
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KLightLock{system_.Kernel()},
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} {}
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void KMemoryManager::Initialize(VAddr management_region, size_t management_region_size) {
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// Clear the management region to zero.
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const VAddr management_region_end = management_region + management_region_size;
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// Reset our manager count.
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num_managers = 0;
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// Traverse the virtual memory layout tree, initializing each manager as appropriate.
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while (num_managers != MaxManagerCount) {
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// Locate the region that should initialize the current manager.
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PAddr region_address = 0;
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size_t region_size = 0;
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Pool region_pool = Pool::Count;
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for (const auto& it : system.Kernel().MemoryLayout().GetPhysicalMemoryRegionTree()) {
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// We only care about regions that we need to create managers for.
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if (!it.IsDerivedFrom(KMemoryRegionType_DramUserPool)) {
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continue;
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}
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// We want to initialize the managers in order.
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if (it.GetAttributes() != num_managers) {
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continue;
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}
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const PAddr cur_start = it.GetAddress();
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const PAddr cur_end = it.GetEndAddress();
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// Validate the region.
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ASSERT(cur_end != 0);
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ASSERT(cur_start != 0);
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ASSERT(it.GetSize() > 0);
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// Update the region's extents.
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if (region_address == 0) {
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region_address = cur_start;
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region_size = it.GetSize();
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region_pool = GetPoolFromMemoryRegionType(it.GetType());
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} else {
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ASSERT(cur_start == region_address + region_size);
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// Update the size.
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region_size = cur_end - region_address;
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ASSERT(GetPoolFromMemoryRegionType(it.GetType()) == region_pool);
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}
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}
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// If we didn't find a region, we're done.
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if (region_size == 0) {
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break;
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}
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// Initialize a new manager for the region.
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Impl* manager = std::addressof(managers[num_managers++]);
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ASSERT(num_managers <= managers.size());
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const size_t cur_size = manager->Initialize(region_address, region_size, management_region,
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management_region_end, region_pool);
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management_region += cur_size;
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ASSERT(management_region <= management_region_end);
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// Insert the manager into the pool list.
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const auto region_pool_index = static_cast<u32>(region_pool);
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if (pool_managers_tail[region_pool_index] == nullptr) {
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pool_managers_head[region_pool_index] = manager;
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} else {
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pool_managers_tail[region_pool_index]->SetNext(manager);
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manager->SetPrev(pool_managers_tail[region_pool_index]);
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}
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pool_managers_tail[region_pool_index] = manager;
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}
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// Free each region to its corresponding heap.
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size_t reserved_sizes[MaxManagerCount] = {};
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const PAddr ini_start = GetInitialProcessBinaryPhysicalAddress();
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const PAddr ini_end = ini_start + InitialProcessBinarySizeMax;
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const PAddr ini_last = ini_end - 1;
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for (const auto& it : system.Kernel().MemoryLayout().GetPhysicalMemoryRegionTree()) {
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if (it.IsDerivedFrom(KMemoryRegionType_DramUserPool)) {
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// Get the manager for the region.
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auto index = it.GetAttributes();
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auto& manager = managers[index];
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const PAddr cur_start = it.GetAddress();
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const PAddr cur_last = it.GetLastAddress();
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const PAddr cur_end = it.GetEndAddress();
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if (cur_start <= ini_start && ini_last <= cur_last) {
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// Free memory before the ini to the heap.
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if (cur_start != ini_start) {
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manager.Free(cur_start, (ini_start - cur_start) / PageSize);
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}
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// Open/reserve the ini memory.
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manager.OpenFirst(ini_start, InitialProcessBinarySizeMax / PageSize);
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reserved_sizes[it.GetAttributes()] += InitialProcessBinarySizeMax;
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// Free memory after the ini to the heap.
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if (ini_last != cur_last) {
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ASSERT(cur_end != 0);
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manager.Free(ini_end, cur_end - ini_end);
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}
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} else {
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// Ensure there's no partial overlap with the ini image.
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if (cur_start <= ini_last) {
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ASSERT(cur_last < ini_start);
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} else {
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// Otherwise, check the region for general validity.
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ASSERT(cur_end != 0);
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}
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// Free the memory to the heap.
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manager.Free(cur_start, it.GetSize() / PageSize);
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}
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}
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}
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// Update the used size for all managers.
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for (size_t i = 0; i < num_managers; ++i) {
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managers[i].SetInitialUsedHeapSize(reserved_sizes[i]);
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}
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}
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VAddr KMemoryManager::AllocateAndOpenContinuous(std::size_t num_pages, std::size_t align_pages,
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u32 option) {
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// Early return if we're allocating no pages
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PAddr KMemoryManager::AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option) {
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// Early return if we're allocating no pages.
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if (num_pages == 0) {
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return {};
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return 0;
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}
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// Lock the pool that we're allocating from
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// Lock the pool that we're allocating from.
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const auto [pool, dir] = DecodeOption(option);
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const auto pool_index{static_cast<std::size_t>(pool)};
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std::lock_guard lock{pool_locks[pool_index]};
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KScopedLightLock lk(pool_locks[static_cast<std::size_t>(pool)]);
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// Choose a heap based on our page size request
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const s32 heap_index{KPageHeap::GetAlignedBlockIndex(num_pages, align_pages)};
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// Choose a heap based on our page size request.
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const s32 heap_index = KPageHeap::GetAlignedBlockIndex(num_pages, align_pages);
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// Loop, trying to iterate from each block
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// TODO (bunnei): Support multiple managers
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Impl& chosen_manager{managers[pool_index]};
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VAddr allocated_block{chosen_manager.AllocateBlock(heap_index, false)};
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// If we failed to allocate, quit now
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if (!allocated_block) {
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return {};
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// Loop, trying to iterate from each block.
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Impl* chosen_manager = nullptr;
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PAddr allocated_block = 0;
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for (chosen_manager = this->GetFirstManager(pool, dir); chosen_manager != nullptr;
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chosen_manager = this->GetNextManager(chosen_manager, dir)) {
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allocated_block = chosen_manager->AllocateBlock(heap_index, true);
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if (allocated_block != 0) {
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break;
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}
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}
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// If we allocated more than we need, free some
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const auto allocated_pages{KPageHeap::GetBlockNumPages(heap_index)};
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// If we failed to allocate, quit now.
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if (allocated_block == 0) {
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return 0;
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}
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// If we allocated more than we need, free some.
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const size_t allocated_pages = KPageHeap::GetBlockNumPages(heap_index);
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if (allocated_pages > num_pages) {
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chosen_manager.Free(allocated_block + num_pages * PageSize, allocated_pages - num_pages);
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chosen_manager->Free(allocated_block + num_pages * PageSize, allocated_pages - num_pages);
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}
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// Open the first reference to the pages.
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chosen_manager->OpenFirst(allocated_block, num_pages);
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return allocated_block;
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}
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ResultCode KMemoryManager::Allocate(KPageLinkedList& page_list, std::size_t num_pages, Pool pool,
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Direction dir, u32 heap_fill_value) {
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ASSERT(page_list.GetNumPages() == 0);
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ResultCode KMemoryManager::AllocatePageGroupImpl(KPageLinkedList* out, size_t num_pages, Pool pool,
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Direction dir, bool random) {
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// Choose a heap based on our page size request.
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const s32 heap_index = KPageHeap::GetBlockIndex(num_pages);
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R_UNLESS(0 <= heap_index, ResultOutOfMemory);
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// Early return if we're allocating no pages
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if (num_pages == 0) {
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return ResultSuccess;
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}
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// Lock the pool that we're allocating from
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const auto pool_index{static_cast<std::size_t>(pool)};
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std::lock_guard lock{pool_locks[pool_index]};
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// Choose a heap based on our page size request
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const s32 heap_index{KPageHeap::GetBlockIndex(num_pages)};
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if (heap_index < 0) {
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return ResultOutOfMemory;
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}
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// TODO (bunnei): Support multiple managers
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Impl& chosen_manager{managers[pool_index]};
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// Ensure that we don't leave anything un-freed
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auto group_guard = detail::ScopeExit([&] {
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for (const auto& it : page_list.Nodes()) {
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const auto min_num_pages{std::min<size_t>(
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it.GetNumPages(), (chosen_manager.GetEndAddress() - it.GetAddress()) / PageSize)};
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chosen_manager.Free(it.GetAddress(), min_num_pages);
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// Ensure that we don't leave anything un-freed.
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auto group_guard = SCOPE_GUARD({
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for (const auto& it : out->Nodes()) {
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auto& manager = this->GetManager(system.Kernel().MemoryLayout(), it.GetAddress());
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const size_t num_pages_to_free =
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std::min(it.GetNumPages(), (manager.GetEndAddress() - it.GetAddress()) / PageSize);
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manager.Free(it.GetAddress(), num_pages_to_free);
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}
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});
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// Keep allocating until we've allocated all our pages
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for (s32 index{heap_index}; index >= 0 && num_pages > 0; index--) {
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const auto pages_per_alloc{KPageHeap::GetBlockNumPages(index)};
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while (num_pages >= pages_per_alloc) {
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// Allocate a block
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VAddr allocated_block{chosen_manager.AllocateBlock(index, false)};
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if (!allocated_block) {
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break;
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}
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// Safely add it to our group
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{
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auto block_guard = detail::ScopeExit(
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[&] { chosen_manager.Free(allocated_block, pages_per_alloc); });
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if (const ResultCode result{page_list.AddBlock(allocated_block, pages_per_alloc)};
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result.IsError()) {
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return result;
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// Keep allocating until we've allocated all our pages.
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for (s32 index = heap_index; index >= 0 && num_pages > 0; index--) {
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const size_t pages_per_alloc = KPageHeap::GetBlockNumPages(index);
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for (Impl* cur_manager = this->GetFirstManager(pool, dir); cur_manager != nullptr;
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cur_manager = this->GetNextManager(cur_manager, dir)) {
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while (num_pages >= pages_per_alloc) {
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// Allocate a block.
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PAddr allocated_block = cur_manager->AllocateBlock(index, random);
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if (allocated_block == 0) {
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break;
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}
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block_guard.Cancel();
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}
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// Safely add it to our group.
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{
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auto block_guard =
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SCOPE_GUARD({ cur_manager->Free(allocated_block, pages_per_alloc); });
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R_TRY(out->AddBlock(allocated_block, pages_per_alloc));
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block_guard.Cancel();
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}
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num_pages -= pages_per_alloc;
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num_pages -= pages_per_alloc;
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}
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}
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}
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// Clear allocated memory.
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for (const auto& it : page_list.Nodes()) {
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std::memset(system.DeviceMemory().GetPointer(it.GetAddress()), heap_fill_value,
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it.GetSize());
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}
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// Only succeed if we allocated as many pages as we wanted
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if (num_pages) {
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return ResultOutOfMemory;
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}
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// Only succeed if we allocated as many pages as we wanted.
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R_UNLESS(num_pages == 0, ResultOutOfMemory);
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// We succeeded!
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group_guard.Cancel();
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return ResultSuccess;
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}
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ResultCode KMemoryManager::Free(KPageLinkedList& page_list, std::size_t num_pages, Pool pool,
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Direction dir, u32 heap_fill_value) {
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// Early return if we're freeing no pages
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if (!num_pages) {
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return ResultSuccess;
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}
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ResultCode KMemoryManager::AllocateAndOpen(KPageLinkedList* out, size_t num_pages, u32 option) {
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ASSERT(out != nullptr);
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ASSERT(out->GetNumPages() == 0);
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// Lock the pool that we're freeing from
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const auto pool_index{static_cast<std::size_t>(pool)};
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std::lock_guard lock{pool_locks[pool_index]};
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// Early return if we're allocating no pages.
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R_SUCCEED_IF(num_pages == 0);
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// TODO (bunnei): Support multiple managers
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Impl& chosen_manager{managers[pool_index]};
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// Lock the pool that we're allocating from.
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const auto [pool, dir] = DecodeOption(option);
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KScopedLightLock lk(pool_locks[static_cast<size_t>(pool)]);
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// Free all of the pages
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for (const auto& it : page_list.Nodes()) {
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const auto min_num_pages{std::min<size_t>(
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it.GetNumPages(), (chosen_manager.GetEndAddress() - it.GetAddress()) / PageSize)};
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chosen_manager.Free(it.GetAddress(), min_num_pages);
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// Allocate the page group.
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R_TRY(this->AllocatePageGroupImpl(out, num_pages, pool, dir, false));
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// Open the first reference to the pages.
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for (const auto& block : out->Nodes()) {
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PAddr cur_address = block.GetAddress();
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size_t remaining_pages = block.GetNumPages();
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while (remaining_pages > 0) {
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// Get the manager for the current address.
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auto& manager = this->GetManager(system.Kernel().MemoryLayout(), cur_address);
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// Process part or all of the block.
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const size_t cur_pages =
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std::min(remaining_pages, manager.GetPageOffsetToEnd(cur_address));
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manager.OpenFirst(cur_address, cur_pages);
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// Advance.
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cur_address += cur_pages * PageSize;
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remaining_pages -= cur_pages;
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}
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}
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return ResultSuccess;
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}
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std::size_t KMemoryManager::Impl::CalculateManagementOverheadSize(std::size_t region_size) {
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const std::size_t ref_count_size = (region_size / PageSize) * sizeof(u16);
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const std::size_t optimize_map_size =
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ResultCode KMemoryManager::AllocateAndOpenForProcess(KPageLinkedList* out, size_t num_pages,
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u32 option, u64 process_id, u8 fill_pattern) {
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ASSERT(out != nullptr);
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ASSERT(out->GetNumPages() == 0);
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// Decode the option.
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const auto [pool, dir] = DecodeOption(option);
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// Allocate the memory.
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{
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// Lock the pool that we're allocating from.
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KScopedLightLock lk(pool_locks[static_cast<size_t>(pool)]);
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// Allocate the page group.
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R_TRY(this->AllocatePageGroupImpl(out, num_pages, pool, dir, false));
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// Open the first reference to the pages.
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for (const auto& block : out->Nodes()) {
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PAddr cur_address = block.GetAddress();
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size_t remaining_pages = block.GetNumPages();
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while (remaining_pages > 0) {
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// Get the manager for the current address.
|
||||
auto& manager = this->GetManager(system.Kernel().MemoryLayout(), cur_address);
|
||||
|
||||
// Process part or all of the block.
|
||||
const size_t cur_pages =
|
||||
std::min(remaining_pages, manager.GetPageOffsetToEnd(cur_address));
|
||||
manager.OpenFirst(cur_address, cur_pages);
|
||||
|
||||
// Advance.
|
||||
cur_address += cur_pages * PageSize;
|
||||
remaining_pages -= cur_pages;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Set all the allocated memory.
|
||||
for (const auto& block : out->Nodes()) {
|
||||
std::memset(system.DeviceMemory().GetPointer(block.GetAddress()), fill_pattern,
|
||||
block.GetSize());
|
||||
}
|
||||
|
||||
return ResultSuccess;
|
||||
}
|
||||
|
||||
void KMemoryManager::Open(PAddr address, size_t num_pages) {
|
||||
// Repeatedly open references until we've done so for all pages.
|
||||
while (num_pages) {
|
||||
auto& manager = this->GetManager(system.Kernel().MemoryLayout(), address);
|
||||
const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
|
||||
|
||||
{
|
||||
KScopedLightLock lk(pool_locks[static_cast<size_t>(manager.GetPool())]);
|
||||
manager.Open(address, cur_pages);
|
||||
}
|
||||
|
||||
num_pages -= cur_pages;
|
||||
address += cur_pages * PageSize;
|
||||
}
|
||||
}
|
||||
|
||||
void KMemoryManager::Close(PAddr address, size_t num_pages) {
|
||||
// Repeatedly close references until we've done so for all pages.
|
||||
while (num_pages) {
|
||||
auto& manager = this->GetManager(system.Kernel().MemoryLayout(), address);
|
||||
const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
|
||||
|
||||
{
|
||||
KScopedLightLock lk(pool_locks[static_cast<size_t>(manager.GetPool())]);
|
||||
manager.Close(address, cur_pages);
|
||||
}
|
||||
|
||||
num_pages -= cur_pages;
|
||||
address += cur_pages * PageSize;
|
||||
}
|
||||
}
|
||||
|
||||
void KMemoryManager::Close(const KPageLinkedList& pg) {
|
||||
for (const auto& node : pg.Nodes()) {
|
||||
Close(node.GetAddress(), node.GetNumPages());
|
||||
}
|
||||
}
|
||||
void KMemoryManager::Open(const KPageLinkedList& pg) {
|
||||
for (const auto& node : pg.Nodes()) {
|
||||
Open(node.GetAddress(), node.GetNumPages());
|
||||
}
|
||||
}
|
||||
|
||||
size_t KMemoryManager::Impl::Initialize(PAddr address, size_t size, VAddr management,
|
||||
VAddr management_end, Pool p) {
|
||||
// Calculate management sizes.
|
||||
const size_t ref_count_size = (size / PageSize) * sizeof(u16);
|
||||
const size_t optimize_map_size = CalculateOptimizedProcessOverheadSize(size);
|
||||
const size_t manager_size = Common::AlignUp(optimize_map_size + ref_count_size, PageSize);
|
||||
const size_t page_heap_size = KPageHeap::CalculateManagementOverheadSize(size);
|
||||
const size_t total_management_size = manager_size + page_heap_size;
|
||||
ASSERT(manager_size <= total_management_size);
|
||||
ASSERT(management + total_management_size <= management_end);
|
||||
ASSERT(Common::IsAligned(total_management_size, PageSize));
|
||||
|
||||
// Setup region.
|
||||
pool = p;
|
||||
management_region = management;
|
||||
page_reference_counts.resize(
|
||||
Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetIntendedMemorySize() / PageSize);
|
||||
ASSERT(Common::IsAligned(management_region, PageSize));
|
||||
|
||||
// Initialize the manager's KPageHeap.
|
||||
heap.Initialize(address, size, management + manager_size, page_heap_size);
|
||||
|
||||
return total_management_size;
|
||||
}
|
||||
|
||||
size_t KMemoryManager::Impl::CalculateManagementOverheadSize(size_t region_size) {
|
||||
const size_t ref_count_size = (region_size / PageSize) * sizeof(u16);
|
||||
const size_t optimize_map_size =
|
||||
(Common::AlignUp((region_size / PageSize), Common::BitSize<u64>()) /
|
||||
Common::BitSize<u64>()) *
|
||||
sizeof(u64);
|
||||
const std::size_t manager_meta_size =
|
||||
Common::AlignUp(optimize_map_size + ref_count_size, PageSize);
|
||||
const std::size_t page_heap_size = KPageHeap::CalculateManagementOverheadSize(region_size);
|
||||
const size_t manager_meta_size = Common::AlignUp(optimize_map_size + ref_count_size, PageSize);
|
||||
const size_t page_heap_size = KPageHeap::CalculateManagementOverheadSize(region_size);
|
||||
return manager_meta_size + page_heap_size;
|
||||
}
|
||||
|
||||
|
||||
@@ -5,11 +5,12 @@
|
||||
#pragma once
|
||||
|
||||
#include <array>
|
||||
#include <mutex>
|
||||
#include <tuple>
|
||||
|
||||
#include "common/common_funcs.h"
|
||||
#include "common/common_types.h"
|
||||
#include "core/hle/kernel/k_light_lock.h"
|
||||
#include "core/hle/kernel/k_memory_layout.h"
|
||||
#include "core/hle/kernel/k_page_heap.h"
|
||||
#include "core/hle/result.h"
|
||||
|
||||
@@ -52,22 +53,33 @@ public:
|
||||
|
||||
explicit KMemoryManager(Core::System& system_);
|
||||
|
||||
constexpr std::size_t GetSize(Pool pool) const {
|
||||
return managers[static_cast<std::size_t>(pool)].GetSize();
|
||||
void Initialize(VAddr management_region, size_t management_region_size);
|
||||
|
||||
constexpr size_t GetSize(Pool pool) const {
|
||||
constexpr Direction GetSizeDirection = Direction::FromFront;
|
||||
size_t total = 0;
|
||||
for (auto* manager = this->GetFirstManager(pool, GetSizeDirection); manager != nullptr;
|
||||
manager = this->GetNextManager(manager, GetSizeDirection)) {
|
||||
total += manager->GetSize();
|
||||
}
|
||||
return total;
|
||||
}
|
||||
|
||||
void InitializeManager(Pool pool, u64 start_address, u64 end_address);
|
||||
PAddr AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option);
|
||||
ResultCode AllocateAndOpen(KPageLinkedList* out, size_t num_pages, u32 option);
|
||||
ResultCode AllocateAndOpenForProcess(KPageLinkedList* out, size_t num_pages, u32 option,
|
||||
u64 process_id, u8 fill_pattern);
|
||||
|
||||
VAddr AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option);
|
||||
ResultCode Allocate(KPageLinkedList& page_list, std::size_t num_pages, Pool pool, Direction dir,
|
||||
u32 heap_fill_value = 0);
|
||||
ResultCode Free(KPageLinkedList& page_list, std::size_t num_pages, Pool pool, Direction dir,
|
||||
u32 heap_fill_value = 0);
|
||||
static constexpr size_t MaxManagerCount = 10;
|
||||
|
||||
static constexpr std::size_t MaxManagerCount = 10;
|
||||
void Close(PAddr address, size_t num_pages);
|
||||
void Close(const KPageLinkedList& pg);
|
||||
|
||||
void Open(PAddr address, size_t num_pages);
|
||||
void Open(const KPageLinkedList& pg);
|
||||
|
||||
public:
|
||||
static std::size_t CalculateManagementOverheadSize(std::size_t region_size) {
|
||||
static size_t CalculateManagementOverheadSize(size_t region_size) {
|
||||
return Impl::CalculateManagementOverheadSize(region_size);
|
||||
}
|
||||
|
||||
@@ -100,17 +112,26 @@ private:
|
||||
Impl() = default;
|
||||
~Impl() = default;
|
||||
|
||||
std::size_t Initialize(Pool new_pool, u64 start_address, u64 end_address);
|
||||
size_t Initialize(PAddr address, size_t size, VAddr management, VAddr management_end,
|
||||
Pool p);
|
||||
|
||||
VAddr AllocateBlock(s32 index, bool random) {
|
||||
return heap.AllocateBlock(index, random);
|
||||
}
|
||||
|
||||
void Free(VAddr addr, std::size_t num_pages) {
|
||||
void Free(VAddr addr, size_t num_pages) {
|
||||
heap.Free(addr, num_pages);
|
||||
}
|
||||
|
||||
constexpr std::size_t GetSize() const {
|
||||
void SetInitialUsedHeapSize(size_t reserved_size) {
|
||||
heap.SetInitialUsedSize(reserved_size);
|
||||
}
|
||||
|
||||
constexpr Pool GetPool() const {
|
||||
return pool;
|
||||
}
|
||||
|
||||
constexpr size_t GetSize() const {
|
||||
return heap.GetSize();
|
||||
}
|
||||
|
||||
@@ -122,10 +143,88 @@ private:
|
||||
return heap.GetEndAddress();
|
||||
}
|
||||
|
||||
static std::size_t CalculateManagementOverheadSize(std::size_t region_size);
|
||||
constexpr size_t GetPageOffset(PAddr address) const {
|
||||
return heap.GetPageOffset(address);
|
||||
}
|
||||
|
||||
static constexpr std::size_t CalculateOptimizedProcessOverheadSize(
|
||||
std::size_t region_size) {
|
||||
constexpr size_t GetPageOffsetToEnd(PAddr address) const {
|
||||
return heap.GetPageOffsetToEnd(address);
|
||||
}
|
||||
|
||||
constexpr void SetNext(Impl* n) {
|
||||
next = n;
|
||||
}
|
||||
|
||||
constexpr void SetPrev(Impl* n) {
|
||||
prev = n;
|
||||
}
|
||||
|
||||
constexpr Impl* GetNext() const {
|
||||
return next;
|
||||
}
|
||||
|
||||
constexpr Impl* GetPrev() const {
|
||||
return prev;
|
||||
}
|
||||
|
||||
void OpenFirst(PAddr address, size_t num_pages) {
|
||||
size_t index = this->GetPageOffset(address);
|
||||
const size_t end = index + num_pages;
|
||||
while (index < end) {
|
||||
const RefCount ref_count = (++page_reference_counts[index]);
|
||||
ASSERT(ref_count == 1);
|
||||
|
||||
index++;
|
||||
}
|
||||
}
|
||||
|
||||
void Open(PAddr address, size_t num_pages) {
|
||||
size_t index = this->GetPageOffset(address);
|
||||
const size_t end = index + num_pages;
|
||||
while (index < end) {
|
||||
const RefCount ref_count = (++page_reference_counts[index]);
|
||||
ASSERT(ref_count > 1);
|
||||
|
||||
index++;
|
||||
}
|
||||
}
|
||||
|
||||
void Close(PAddr address, size_t num_pages) {
|
||||
size_t index = this->GetPageOffset(address);
|
||||
const size_t end = index + num_pages;
|
||||
|
||||
size_t free_start = 0;
|
||||
size_t free_count = 0;
|
||||
while (index < end) {
|
||||
ASSERT(page_reference_counts[index] > 0);
|
||||
const RefCount ref_count = (--page_reference_counts[index]);
|
||||
|
||||
// Keep track of how many zero refcounts we see in a row, to minimize calls to free.
|
||||
if (ref_count == 0) {
|
||||
if (free_count > 0) {
|
||||
free_count++;
|
||||
} else {
|
||||
free_start = index;
|
||||
free_count = 1;
|
||||
}
|
||||
} else {
|
||||
if (free_count > 0) {
|
||||
this->Free(heap.GetAddress() + free_start * PageSize, free_count);
|
||||
free_count = 0;
|
||||
}
|
||||
}
|
||||
|
||||
index++;
|
||||
}
|
||||
|
||||
if (free_count > 0) {
|
||||
this->Free(heap.GetAddress() + free_start * PageSize, free_count);
|
||||
}
|
||||
}
|
||||
|
||||
static size_t CalculateManagementOverheadSize(size_t region_size);
|
||||
|
||||
static constexpr size_t CalculateOptimizedProcessOverheadSize(size_t region_size) {
|
||||
return (Common::AlignUp((region_size / PageSize), Common::BitSize<u64>()) /
|
||||
Common::BitSize<u64>()) *
|
||||
sizeof(u64);
|
||||
@@ -135,13 +234,45 @@ private:
|
||||
using RefCount = u16;
|
||||
|
||||
KPageHeap heap;
|
||||
std::vector<RefCount> page_reference_counts;
|
||||
VAddr management_region{};
|
||||
Pool pool{};
|
||||
Impl* next{};
|
||||
Impl* prev{};
|
||||
};
|
||||
|
||||
private:
|
||||
Impl& GetManager(const KMemoryLayout& memory_layout, PAddr address) {
|
||||
return managers[memory_layout.GetPhysicalLinearRegion(address).GetAttributes()];
|
||||
}
|
||||
|
||||
const Impl& GetManager(const KMemoryLayout& memory_layout, PAddr address) const {
|
||||
return managers[memory_layout.GetPhysicalLinearRegion(address).GetAttributes()];
|
||||
}
|
||||
|
||||
constexpr Impl* GetFirstManager(Pool pool, Direction dir) const {
|
||||
return dir == Direction::FromBack ? pool_managers_tail[static_cast<size_t>(pool)]
|
||||
: pool_managers_head[static_cast<size_t>(pool)];
|
||||
}
|
||||
|
||||
constexpr Impl* GetNextManager(Impl* cur, Direction dir) const {
|
||||
if (dir == Direction::FromBack) {
|
||||
return cur->GetPrev();
|
||||
} else {
|
||||
return cur->GetNext();
|
||||
}
|
||||
}
|
||||
|
||||
ResultCode AllocatePageGroupImpl(KPageLinkedList* out, size_t num_pages, Pool pool,
|
||||
Direction dir, bool random);
|
||||
|
||||
private:
|
||||
Core::System& system;
|
||||
std::array<std::mutex, static_cast<std::size_t>(Pool::Count)> pool_locks;
|
||||
std::array<KLightLock, static_cast<size_t>(Pool::Count)> pool_locks;
|
||||
std::array<Impl*, MaxManagerCount> pool_managers_head{};
|
||||
std::array<Impl*, MaxManagerCount> pool_managers_tail{};
|
||||
std::array<Impl, MaxManagerCount> managers;
|
||||
size_t num_managers{};
|
||||
};
|
||||
|
||||
} // namespace Kernel
|
||||
|
||||
@@ -273,11 +273,12 @@ ResultCode KPageTable::MapProcessCode(VAddr addr, std::size_t num_pages, KMemory
|
||||
R_TRY(this->CheckMemoryState(addr, size, KMemoryState::All, KMemoryState::Free,
|
||||
KMemoryPermission::None, KMemoryPermission::None,
|
||||
KMemoryAttribute::None, KMemoryAttribute::None));
|
||||
KPageLinkedList pg;
|
||||
R_TRY(system.Kernel().MemoryManager().AllocateAndOpen(
|
||||
&pg, num_pages,
|
||||
KMemoryManager::EncodeOption(KMemoryManager::Pool::Application, allocation_option)));
|
||||
|
||||
KPageLinkedList page_linked_list;
|
||||
R_TRY(system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool,
|
||||
allocation_option));
|
||||
R_TRY(Operate(addr, num_pages, page_linked_list, OperationType::MapGroup));
|
||||
R_TRY(Operate(addr, num_pages, pg, OperationType::MapGroup));
|
||||
|
||||
block_manager->Update(addr, num_pages, state, perm);
|
||||
|
||||
@@ -443,9 +444,10 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr address, std::size_t size) {
|
||||
R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
|
||||
|
||||
// Allocate pages for the new memory.
|
||||
KPageLinkedList page_linked_list;
|
||||
R_TRY(system.Kernel().MemoryManager().Allocate(
|
||||
page_linked_list, (size - mapped_size) / PageSize, memory_pool, allocation_option));
|
||||
KPageLinkedList pg;
|
||||
R_TRY(system.Kernel().MemoryManager().AllocateAndOpenForProcess(
|
||||
&pg, (size - mapped_size) / PageSize,
|
||||
KMemoryManager::EncodeOption(memory_pool, allocation_option), 0, 0));
|
||||
|
||||
// Map the memory.
|
||||
{
|
||||
@@ -547,7 +549,7 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr address, std::size_t size) {
|
||||
});
|
||||
|
||||
// Iterate over the memory.
|
||||
auto pg_it = page_linked_list.Nodes().begin();
|
||||
auto pg_it = pg.Nodes().begin();
|
||||
PAddr pg_phys_addr = pg_it->GetAddress();
|
||||
size_t pg_pages = pg_it->GetNumPages();
|
||||
|
||||
@@ -571,7 +573,7 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr address, std::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 != page_linked_list.Nodes().end());
|
||||
ASSERT(pg_it != pg.Nodes().end());
|
||||
|
||||
// Advance our physical block.
|
||||
++pg_it;
|
||||
@@ -841,10 +843,14 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr address, std::size_t size) {
|
||||
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
|
||||
|
||||
// Update memory blocks.
|
||||
system.Kernel().MemoryManager().Free(pg, size / PageSize, memory_pool, allocation_option);
|
||||
block_manager->Update(address, size / PageSize, KMemoryState::Free, KMemoryPermission::None,
|
||||
KMemoryAttribute::None);
|
||||
|
||||
// TODO(bunnei): This is a workaround until the next set of changes, where we add reference
|
||||
// counting for mapped pages. Until then, we must manually close the reference to the page
|
||||
// group.
|
||||
system.Kernel().MemoryManager().Close(pg);
|
||||
|
||||
// We succeeded.
|
||||
remap_guard.Cancel();
|
||||
|
||||
@@ -1270,9 +1276,16 @@ ResultCode KPageTable::SetHeapSize(VAddr* out, std::size_t size) {
|
||||
R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
|
||||
|
||||
// Allocate pages for the heap extension.
|
||||
KPageLinkedList page_linked_list;
|
||||
R_TRY(system.Kernel().MemoryManager().Allocate(page_linked_list, allocation_size / PageSize,
|
||||
memory_pool, allocation_option));
|
||||
KPageLinkedList pg;
|
||||
R_TRY(system.Kernel().MemoryManager().AllocateAndOpen(
|
||||
&pg, allocation_size / PageSize,
|
||||
KMemoryManager::EncodeOption(memory_pool, allocation_option)));
|
||||
|
||||
// Clear all the newly allocated pages.
|
||||
for (const auto& it : pg.Nodes()) {
|
||||
std::memset(system.DeviceMemory().GetPointer(it.GetAddress()), heap_fill_value,
|
||||
it.GetSize());
|
||||
}
|
||||
|
||||
// Map the pages.
|
||||
{
|
||||
@@ -1291,7 +1304,7 @@ ResultCode KPageTable::SetHeapSize(VAddr* out, std::size_t size) {
|
||||
|
||||
// Map the pages.
|
||||
const auto num_pages = allocation_size / PageSize;
|
||||
R_TRY(Operate(current_heap_end, num_pages, page_linked_list, OperationType::MapGroup));
|
||||
R_TRY(Operate(current_heap_end, num_pages, pg, OperationType::MapGroup));
|
||||
|
||||
// Clear all the newly allocated pages.
|
||||
for (std::size_t cur_page = 0; cur_page < num_pages; ++cur_page) {
|
||||
@@ -1339,8 +1352,9 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages,
|
||||
R_TRY(Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr));
|
||||
} else {
|
||||
KPageLinkedList page_group;
|
||||
R_TRY(system.Kernel().MemoryManager().Allocate(page_group, needed_num_pages, memory_pool,
|
||||
allocation_option));
|
||||
R_TRY(system.Kernel().MemoryManager().AllocateAndOpenForProcess(
|
||||
&page_group, needed_num_pages,
|
||||
KMemoryManager::EncodeOption(memory_pool, allocation_option), 0, 0));
|
||||
R_TRY(Operate(addr, needed_num_pages, page_group, OperationType::MapGroup));
|
||||
}
|
||||
|
||||
|
||||
@@ -310,6 +310,8 @@ private:
|
||||
bool is_kernel{};
|
||||
bool is_aslr_enabled{};
|
||||
|
||||
u32 heap_fill_value{};
|
||||
|
||||
KMemoryManager::Pool memory_pool{KMemoryManager::Pool::Application};
|
||||
KMemoryManager::Direction allocation_option{KMemoryManager::Direction::FromFront};
|
||||
|
||||
|
||||
@@ -70,13 +70,12 @@ struct KernelCore::Impl {
|
||||
|
||||
// Derive the initial memory layout from the emulated board
|
||||
Init::InitializeSlabResourceCounts(kernel);
|
||||
KMemoryLayout memory_layout;
|
||||
DeriveInitialMemoryLayout(memory_layout);
|
||||
DeriveInitialMemoryLayout();
|
||||
Init::InitializeSlabHeaps(system, memory_layout);
|
||||
|
||||
// Initialize kernel memory and resources.
|
||||
InitializeSystemResourceLimit(kernel, system.CoreTiming(), memory_layout);
|
||||
InitializeMemoryLayout(memory_layout);
|
||||
InitializeSystemResourceLimit(kernel, system.CoreTiming());
|
||||
InitializeMemoryLayout();
|
||||
InitializePageSlab();
|
||||
InitializeSchedulers();
|
||||
InitializeSuspendThreads();
|
||||
@@ -219,8 +218,7 @@ struct KernelCore::Impl {
|
||||
|
||||
// Creates the default system resource limit
|
||||
void InitializeSystemResourceLimit(KernelCore& kernel,
|
||||
const Core::Timing::CoreTiming& core_timing,
|
||||
const KMemoryLayout& memory_layout) {
|
||||
const Core::Timing::CoreTiming& core_timing) {
|
||||
system_resource_limit = KResourceLimit::Create(system.Kernel());
|
||||
system_resource_limit->Initialize(&core_timing);
|
||||
|
||||
@@ -353,7 +351,7 @@ struct KernelCore::Impl {
|
||||
return schedulers[thread_id]->GetCurrentThread();
|
||||
}
|
||||
|
||||
void DeriveInitialMemoryLayout(KMemoryLayout& memory_layout) {
|
||||
void DeriveInitialMemoryLayout() {
|
||||
// Insert the root region for the virtual memory tree, from which all other regions will
|
||||
// derive.
|
||||
memory_layout.GetVirtualMemoryRegionTree().InsertDirectly(
|
||||
@@ -616,20 +614,16 @@ struct KernelCore::Impl {
|
||||
linear_region_start);
|
||||
}
|
||||
|
||||
void InitializeMemoryLayout(const KMemoryLayout& memory_layout) {
|
||||
void InitializeMemoryLayout() {
|
||||
const auto system_pool = memory_layout.GetKernelSystemPoolRegionPhysicalExtents();
|
||||
const auto applet_pool = memory_layout.GetKernelAppletPoolRegionPhysicalExtents();
|
||||
const auto application_pool = memory_layout.GetKernelApplicationPoolRegionPhysicalExtents();
|
||||
|
||||
// Initialize memory managers
|
||||
// Initialize the memory manager.
|
||||
memory_manager = std::make_unique<KMemoryManager>(system);
|
||||
memory_manager->InitializeManager(KMemoryManager::Pool::Application,
|
||||
application_pool.GetAddress(),
|
||||
application_pool.GetEndAddress());
|
||||
memory_manager->InitializeManager(KMemoryManager::Pool::Applet, applet_pool.GetAddress(),
|
||||
applet_pool.GetEndAddress());
|
||||
memory_manager->InitializeManager(KMemoryManager::Pool::System, system_pool.GetAddress(),
|
||||
system_pool.GetEndAddress());
|
||||
const auto& management_region = memory_layout.GetPoolManagementRegion();
|
||||
ASSERT(management_region.GetEndAddress() != 0);
|
||||
memory_manager->Initialize(management_region.GetAddress(), management_region.GetSize());
|
||||
|
||||
// Setup memory regions for emulated processes
|
||||
// TODO(bunnei): These should not be hardcoded regions initialized within the kernel
|
||||
@@ -770,6 +764,9 @@ struct KernelCore::Impl {
|
||||
Kernel::KSharedMemory* irs_shared_mem{};
|
||||
Kernel::KSharedMemory* time_shared_mem{};
|
||||
|
||||
// Memory layout
|
||||
KMemoryLayout memory_layout;
|
||||
|
||||
// Threads used for services
|
||||
std::unordered_set<std::shared_ptr<Kernel::ServiceThread>> service_threads;
|
||||
Common::ThreadWorker service_threads_manager;
|
||||
@@ -1135,6 +1132,10 @@ const KWorkerTaskManager& KernelCore::WorkerTaskManager() const {
|
||||
return impl->worker_task_manager;
|
||||
}
|
||||
|
||||
const KMemoryLayout& KernelCore::MemoryLayout() const {
|
||||
return impl->memory_layout;
|
||||
}
|
||||
|
||||
bool KernelCore::IsPhantomModeForSingleCore() const {
|
||||
return impl->IsPhantomModeForSingleCore();
|
||||
}
|
||||
|
||||
@@ -41,6 +41,7 @@ class KClientSession;
|
||||
class KEvent;
|
||||
class KHandleTable;
|
||||
class KLinkedListNode;
|
||||
class KMemoryLayout;
|
||||
class KMemoryManager;
|
||||
class KPort;
|
||||
class KProcess;
|
||||
@@ -350,6 +351,9 @@ public:
|
||||
/// Gets the current worker task manager, used for dispatching KThread/KProcess tasks.
|
||||
const KWorkerTaskManager& WorkerTaskManager() const;
|
||||
|
||||
/// Gets the memory layout.
|
||||
const KMemoryLayout& MemoryLayout() const;
|
||||
|
||||
private:
|
||||
friend class KProcess;
|
||||
friend class KThread;
|
||||
|
||||
Reference in New Issue
Block a user