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Code Issues Releases Activity

kern: change terminology metadata -> management

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This commit is contained in:
Michael Scire 2020-08-25 16:12:14 -07:00 committed by SciresM
parent 546e2de300
commit ce95af89ef
7 changed files with 133 additions and 115 deletions
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14
libraries/libmesosphere/include/mesosphere/kern_k_dynamic_page_manager.hpp
View file

@ -46,9 +46,9 @@ namespace ams::kern {
/* We need to have positive size. */
R_UNLESS(sz > 0, svc::ResultOutOfMemory());
/* Calculate metadata overhead. */
const size_t metadata_size = KPageBitmap::CalculateMetadataOverheadSize(sz / sizeof(PageBuffer));
const size_t allocatable_size = sz - metadata_size;
/* Calculate management overhead. */
const size_t management_size = KPageBitmap::CalculateManagementOverheadSize(sz / sizeof(PageBuffer));
const size_t allocatable_size = sz - management_size;
/* Set tracking fields. */
this->address = memory;
@ -56,12 +56,12 @@ namespace ams::kern {
this->count = allocatable_size / sizeof(PageBuffer);
R_UNLESS(this->count > 0, svc::ResultOutOfMemory());
/* Clear the metadata region. */
u64 *metadata_ptr = GetPointer<u64>(this->address + allocatable_size);
std::memset(metadata_ptr, 0, metadata_size);
/* Clear the management region. */
u64 *management_ptr = GetPointer<u64>(this->address + allocatable_size);
std::memset(management_ptr, 0, management_size);
/* Initialize the bitmap. */
this->page_bitmap.Initialize(metadata_ptr, this->count);
this->page_bitmap.Initialize(management_ptr, this->count);
/* Free the pages to the bitmap. */
std::memset(GetPointer<PageBuffer>(this->address), 0, this->count * sizeof(PageBuffer));

17
libraries/libmesosphere/include/mesosphere/kern_k_memory_manager.hpp
View file

@ -38,6 +38,7 @@ namespace ams::kern {
/* Aliases. */
Pool_Unsafe = Pool_Application,
Pool_Secure = Pool_System,
};
enum Direction {
@ -54,7 +55,7 @@ namespace ams::kern {
private:
using RefCount = u16;
public:
static size_t CalculateMetadataOverheadSize(size_t region_size);
static size_t CalculateManagementOverheadSize(size_t region_size);
static constexpr size_t CalculateOptimizedProcessOverheadSize(size_t region_size) {
return (util::AlignUp((region_size / PageSize), BITSIZEOF(u64)) / BITSIZEOF(u64)) * sizeof(u64);
@ -62,19 +63,19 @@ namespace ams::kern {
private:
KPageHeap heap;
RefCount *page_reference_counts;
KVirtualAddress metadata_region;
KVirtualAddress management_region;
Pool pool;
Impl *next;
Impl *prev;
public:
Impl() : heap(), page_reference_counts(), metadata_region(), pool(), next(), prev() { /* ... */ }
Impl() : heap(), page_reference_counts(), management_region(), pool(), next(), prev() { /* ... */ }
size_t Initialize(const KMemoryRegion *region, Pool pool, KVirtualAddress metadata_region, KVirtualAddress metadata_region_end);
size_t Initialize(const KMemoryRegion *region, Pool pool, KVirtualAddress management_region, KVirtualAddress management_region_end);
KVirtualAddress AllocateBlock(s32 index, bool random) { return this->heap.AllocateBlock(index, random); }
void Free(KVirtualAddress addr, size_t num_pages) { this->heap.Free(addr, num_pages); }
void InitializeOptimizedMemory() { std::memset(GetVoidPointer(this->metadata_region), 0, CalculateOptimizedProcessOverheadSize(this->heap.GetSize())); }
void InitializeOptimizedMemory() { std::memset(GetVoidPointer(this->management_region), 0, CalculateOptimizedProcessOverheadSize(this->heap.GetSize())); }
void TrackUnoptimizedAllocation(KVirtualAddress block, size_t num_pages);
void TrackOptimizedAllocation(KVirtualAddress block, size_t num_pages);
@ -172,7 +173,7 @@ namespace ams::kern {
/* ... */
}
NOINLINE void Initialize(KVirtualAddress metadata_region, size_t metadata_region_size);
NOINLINE void Initialize(KVirtualAddress management_region, size_t management_region_size);
NOINLINE Result InitializeOptimizedMemory(u64 process_id, Pool pool);
NOINLINE void FinalizeOptimizedMemory(u64 process_id, Pool pool);
@ -247,8 +248,8 @@ namespace ams::kern {
return total;
}
public:
static size_t CalculateMetadataOverheadSize(size_t region_size) {
return Impl::CalculateMetadataOverheadSize(region_size);
static size_t CalculateManagementOverheadSize(size_t region_size) {
return Impl::CalculateManagementOverheadSize(region_size);
}
static constexpr ALWAYS_INLINE u32 EncodeOption(Pool pool, Direction dir) {

2
libraries/libmesosphere/include/mesosphere/kern_k_page_bitmap.hpp
View file

@ -254,7 +254,7 @@ namespace ams::kern {
}
}
public:
static constexpr size_t CalculateMetadataOverheadSize(size_t region_size) {
static constexpr size_t CalculateManagementOverheadSize(size_t region_size) {
size_t overhead_bits = 0;
for (s32 depth = GetRequiredDepth(region_size) - 1; depth >= 0; depth--) {
region_size = util::AlignUp(region_size, BITSIZEOF(u64)) / BITSIZEOF(u64);

16
libraries/libmesosphere/include/mesosphere/kern_k_page_heap.hpp
View file

@ -115,11 +115,11 @@ namespace ams::kern {
return this->heap_address + (offset << this->GetShift());
}
public:
static constexpr size_t CalculateMetadataOverheadSize(size_t region_size, size_t cur_block_shift, size_t next_block_shift) {
static constexpr size_t CalculateManagementOverheadSize(size_t region_size, size_t cur_block_shift, size_t next_block_shift) {
const size_t cur_block_size = (u64(1) << cur_block_shift);
const size_t next_block_size = (u64(1) << next_block_shift);
const size_t align = (next_block_shift != 0) ? next_block_size : cur_block_size;
return KPageBitmap::CalculateMetadataOverheadSize((align * 2 + util::AlignUp(region_size, align)) / cur_block_size);
return KPageBitmap::CalculateManagementOverheadSize((align * 2 + util::AlignUp(region_size, align)) / cur_block_size);
}
};
private:
@ -129,7 +129,7 @@ namespace ams::kern {
size_t num_blocks;
Block blocks[NumMemoryBlockPageShifts];
private:
void Initialize(KVirtualAddress heap_address, size_t heap_size, KVirtualAddress metadata_address, size_t metadata_size, const size_t *block_shifts, size_t num_block_shifts);
void Initialize(KVirtualAddress heap_address, size_t heap_size, KVirtualAddress management_address, size_t management_size, const size_t *block_shifts, size_t num_block_shifts);
size_t GetNumFreePages() const;
void FreeBlock(KVirtualAddress block, s32 index);
@ -142,8 +142,8 @@ namespace ams::kern {
constexpr size_t GetPageOffset(KVirtualAddress block) const { return (block - this->GetAddress()) / PageSize; }
constexpr size_t GetPageOffsetToEnd(KVirtualAddress block) const { return (this->GetEndAddress() - block) / PageSize; }
void Initialize(KVirtualAddress heap_address, size_t heap_size, KVirtualAddress metadata_address, size_t metadata_size) {
return Initialize(heap_address, heap_size, metadata_address, metadata_size, MemoryBlockPageShifts, NumMemoryBlockPageShifts);
void Initialize(KVirtualAddress heap_address, size_t heap_size, KVirtualAddress management_address, size_t management_size) {
return Initialize(heap_address, heap_size, management_address, management_size, MemoryBlockPageShifts, NumMemoryBlockPageShifts);
}
size_t GetFreeSize() const { return this->GetNumFreePages() * PageSize; }
@ -155,10 +155,10 @@ namespace ams::kern {
KVirtualAddress AllocateBlock(s32 index, bool random);
void Free(KVirtualAddress addr, size_t num_pages);
private:
static size_t CalculateMetadataOverheadSize(size_t region_size, const size_t *block_shifts, size_t num_block_shifts);
static size_t CalculateManagementOverheadSize(size_t region_size, const size_t *block_shifts, size_t num_block_shifts);
public:
static size_t CalculateMetadataOverheadSize(size_t region_size) {
return CalculateMetadataOverheadSize(region_size, MemoryBlockPageShifts, NumMemoryBlockPageShifts);
static size_t CalculateManagementOverheadSize(size_t region_size) {
return CalculateManagementOverheadSize(region_size, MemoryBlockPageShifts, NumMemoryBlockPageShifts);
}
};

139
libraries/libmesosphere/source/kern_k_memory_layout.board.nintendo_nx.cpp
View file

@ -59,6 +59,79 @@ namespace ams::kern {
namespace init {
namespace {
void SetupPoolPartitionMemoryRegionsImpl() {
/* Start by identifying the extents of the DRAM memory region. */
const auto dram_extents = KMemoryLayout::GetMainMemoryPhysicalExtents();
const uintptr_t pool_end = dram_extents.GetEndAddress() - KTraceBufferSize;
/* Get Application and Applet pool sizes. */
const size_t application_pool_size = KSystemControl::Init::GetApplicationPoolSize();
const size_t applet_pool_size = KSystemControl::Init::GetAppletPoolSize();
const size_t unsafe_system_pool_min_size = KSystemControl::Init::GetMinimumNonSecureSystemPoolSize();
/* Find the start of the kernel DRAM region. */
const KMemoryRegion *kernel_dram_region = KMemoryLayout::GetPhysicalMemoryRegionTree().FindFirstDerived(KMemoryRegionType_DramKernelBase);
MESOSPHERE_INIT_ABORT_UNLESS(kernel_dram_region != nullptr);
const uintptr_t kernel_dram_start = kernel_dram_region->GetAddress();
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(kernel_dram_start, CarveoutAlignment));
/* Find the start of the pool partitions region. */
const KMemoryRegion *pool_partitions_region = KMemoryLayout::GetPhysicalMemoryRegionTree().FindByTypeAndAttribute(KMemoryRegionType_DramPoolPartition, 0);
MESOSPHERE_INIT_ABORT_UNLESS(pool_partitions_region != nullptr);
const uintptr_t pool_partitions_start = pool_partitions_region->GetAddress();
/* Decide on starting addresses for our pools. */
const uintptr_t application_pool_start = pool_end - application_pool_size;
const uintptr_t applet_pool_start = application_pool_start - applet_pool_size;
const uintptr_t unsafe_system_pool_start = std::min(kernel_dram_start + CarveoutSizeMax, util::AlignDown(applet_pool_start - unsafe_system_pool_min_size, CarveoutAlignment));
const size_t unsafe_system_pool_size = applet_pool_start - unsafe_system_pool_start;
/* We want to arrange application pool depending on where the middle of dram is. */
const uintptr_t dram_midpoint = (dram_extents.GetAddress() + dram_extents.GetEndAddress()) / 2;
u32 cur_pool_attr = 0;
size_t total_overhead_size = 0;
if (dram_extents.GetEndAddress() <= dram_midpoint || dram_midpoint <= application_pool_start) {
InsertPoolPartitionRegionIntoBothTrees(application_pool_start, application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(application_pool_size);
} else {
const size_t first_application_pool_size = dram_midpoint - application_pool_start;
const size_t second_application_pool_size = application_pool_start + application_pool_size - dram_midpoint;
InsertPoolPartitionRegionIntoBothTrees(application_pool_start, first_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
InsertPoolPartitionRegionIntoBothTrees(dram_midpoint, second_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(first_application_pool_size);
total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(second_application_pool_size);
}
/* Insert the applet pool. */
InsertPoolPartitionRegionIntoBothTrees(applet_pool_start, applet_pool_size, KMemoryRegionType_DramAppletPool, KMemoryRegionType_VirtualDramAppletPool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(applet_pool_size);
/* Insert the nonsecure system pool. */
InsertPoolPartitionRegionIntoBothTrees(unsafe_system_pool_start, unsafe_system_pool_size, KMemoryRegionType_DramSystemNonSecurePool, KMemoryRegionType_VirtualDramSystemNonSecurePool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(unsafe_system_pool_size);
/* Insert the pool management region. */
total_overhead_size += KMemoryManager::CalculateManagementOverheadSize((unsafe_system_pool_start - pool_partitions_start) - total_overhead_size);
const uintptr_t pool_management_start = unsafe_system_pool_start - total_overhead_size;
const size_t pool_management_size = total_overhead_size;
u32 pool_management_attr = 0;
InsertPoolPartitionRegionIntoBothTrees(pool_management_start, pool_management_size, KMemoryRegionType_DramPoolManagement, KMemoryRegionType_VirtualDramPoolManagement, pool_management_attr);
/* Insert the system pool. */
const uintptr_t system_pool_size = pool_management_start - pool_partitions_start;
InsertPoolPartitionRegionIntoBothTrees(pool_partitions_start, system_pool_size, KMemoryRegionType_DramSystemPool, KMemoryRegionType_VirtualDramSystemPool, cur_pool_attr);
}
void SetupPoolPartitionMemoryRegionsDeprecatedImpl() {
MESOSPHERE_UNIMPLEMENTED();
}
}
void SetupDevicePhysicalMemoryRegions() {
/* TODO: Give these constexpr defines somewhere? */
MESOSPHERE_INIT_ABORT_UNLESS(SetupUartPhysicalMemoryRegion());
@ -84,69 +157,13 @@ namespace ams::kern {
}
void SetupPoolPartitionMemoryRegions() {
/* Start by identifying the extents of the DRAM memory region. */
const auto dram_extents = KMemoryLayout::GetMainMemoryPhysicalExtents();
const uintptr_t pool_end = dram_extents.GetEndAddress() - KTraceBufferSize;
/* Get Application and Applet pool sizes. */
const size_t application_pool_size = KSystemControl::Init::GetApplicationPoolSize();
const size_t applet_pool_size = KSystemControl::Init::GetAppletPoolSize();
const size_t unsafe_system_pool_min_size = KSystemControl::Init::GetMinimumNonSecureSystemPoolSize();
/* Find the start of the kernel DRAM region. */
const KMemoryRegion *kernel_dram_region = KMemoryLayout::GetPhysicalMemoryRegionTree().FindFirstDerived(KMemoryRegionType_DramKernelBase);
MESOSPHERE_INIT_ABORT_UNLESS(kernel_dram_region != nullptr);
const uintptr_t kernel_dram_start = kernel_dram_region->GetAddress();
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(kernel_dram_start, CarveoutAlignment));
/* Find the start of the pool partitions region. */
const KMemoryRegion *pool_partitions_region = KMemoryLayout::GetPhysicalMemoryRegionTree().FindByTypeAndAttribute(KMemoryRegionType_DramPoolPartition, 0);
MESOSPHERE_INIT_ABORT_UNLESS(pool_partitions_region != nullptr);
const uintptr_t pool_partitions_start = pool_partitions_region->GetAddress();
/* Decide on starting addresses for our pools. */
const uintptr_t application_pool_start = pool_end - application_pool_size;
const uintptr_t applet_pool_start = application_pool_start - applet_pool_size;
const uintptr_t unsafe_system_pool_start = std::min(kernel_dram_start + CarveoutSizeMax, util::AlignDown(applet_pool_start - unsafe_system_pool_min_size, CarveoutAlignment));
const size_t unsafe_system_pool_size = applet_pool_start - unsafe_system_pool_start;
/* We want to arrange application pool depending on where the middle of dram is. */
const uintptr_t dram_midpoint = (dram_extents.GetAddress() + dram_extents.GetEndAddress()) / 2;
u32 cur_pool_attr = 0;
size_t total_overhead_size = 0;
if (dram_extents.GetEndAddress() <= dram_midpoint || dram_midpoint <= application_pool_start) {
InsertPoolPartitionRegionIntoBothTrees(application_pool_start, application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateMetadataOverheadSize(application_pool_size);
if (GetTargetFirmware() >= TargetFirmware_5_0_0) {
/* On 5.0.0+, setup modern 4-pool-partition layout. */
SetupPoolPartitionMemoryRegionsImpl();
} else {
const size_t first_application_pool_size = dram_midpoint - application_pool_start;
const size_t second_application_pool_size = application_pool_start + application_pool_size - dram_midpoint;
InsertPoolPartitionRegionIntoBothTrees(application_pool_start, first_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
InsertPoolPartitionRegionIntoBothTrees(dram_midpoint, second_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateMetadataOverheadSize(first_application_pool_size);
total_overhead_size += KMemoryManager::CalculateMetadataOverheadSize(second_application_pool_size);
/* On < 5.0.0, setup a legacy 2-pool layout for backwards compatibility. */
SetupPoolPartitionMemoryRegionsDeprecatedImpl();
}
/* Insert the applet pool. */
InsertPoolPartitionRegionIntoBothTrees(applet_pool_start, applet_pool_size, KMemoryRegionType_DramAppletPool, KMemoryRegionType_VirtualDramAppletPool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateMetadataOverheadSize(applet_pool_size);
/* Insert the nonsecure system pool. */
InsertPoolPartitionRegionIntoBothTrees(unsafe_system_pool_start, unsafe_system_pool_size, KMemoryRegionType_DramSystemNonSecurePool, KMemoryRegionType_VirtualDramSystemNonSecurePool, cur_pool_attr);
total_overhead_size += KMemoryManager::CalculateMetadataOverheadSize(unsafe_system_pool_size);
/* Insert the metadata pool. */
total_overhead_size += KMemoryManager::CalculateMetadataOverheadSize((unsafe_system_pool_start - pool_partitions_start) - total_overhead_size);
const uintptr_t metadata_pool_start = unsafe_system_pool_start - total_overhead_size;
const size_t metadata_pool_size = total_overhead_size;
u32 metadata_pool_attr = 0;
InsertPoolPartitionRegionIntoBothTrees(metadata_pool_start, metadata_pool_size, KMemoryRegionType_DramPoolManagement, KMemoryRegionType_VirtualDramPoolManagement, metadata_pool_attr);
/* Insert the system pool. */
const uintptr_t system_pool_size = metadata_pool_start - pool_partitions_start;
InsertPoolPartitionRegionIntoBothTrees(pool_partitions_start, system_pool_size, KMemoryRegionType_DramSystemPool, KMemoryRegionType_VirtualDramSystemPool, cur_pool_attr);
}
}

48
libraries/libmesosphere/source/kern_k_memory_manager.cpp
View file

@ -31,10 +31,10 @@ namespace ams::kern {
}
void KMemoryManager::Initialize(KVirtualAddress metadata_region, size_t metadata_region_size) {
/* Clear the metadata region to zero. */
const KVirtualAddress metadata_region_end = metadata_region + metadata_region_size;
std::memset(GetVoidPointer(metadata_region), 0, metadata_region_size);
void KMemoryManager::Initialize(KVirtualAddress management_region, size_t management_region_size) {
/* Clear the management region to zero. */
const KVirtualAddress management_region_end = management_region + management_region_size;
std::memset(GetVoidPointer(management_region), 0, management_region_size);
/* Traverse the virtual memory layout tree, initializing each manager as appropriate. */
while (true) {
@ -72,9 +72,9 @@ namespace ams::kern {
Impl *manager = std::addressof(this->managers[this->num_managers++]);
MESOSPHERE_ABORT_UNLESS(this->num_managers <= util::size(this->managers));
const size_t cur_size = manager->Initialize(region, pool, metadata_region, metadata_region_end);
metadata_region += cur_size;
MESOSPHERE_ABORT_UNLESS(metadata_region <= metadata_region_end);
const size_t cur_size = manager->Initialize(region, pool, management_region, management_region_end);
management_region += cur_size;
MESOSPHERE_ABORT_UNLESS(management_region <= management_region_end);
/* Insert the manager into the pool list. */
if (this->pool_managers_tail[pool] == nullptr) {
@ -313,25 +313,25 @@ namespace ams::kern {
return ResultSuccess();
}
size_t KMemoryManager::Impl::Initialize(const KMemoryRegion *region, Pool p, KVirtualAddress metadata, KVirtualAddress metadata_end) {
/* Calculate metadata sizes. */
size_t KMemoryManager::Impl::Initialize(const KMemoryRegion *region, Pool p, KVirtualAddress management, KVirtualAddress management_end) {
/* Calculate management sizes. */
const size_t ref_count_size = (region->GetSize() / PageSize) * sizeof(u16);
const size_t optimize_map_size = CalculateOptimizedProcessOverheadSize(region->GetSize());
const size_t manager_size = util::AlignUp(optimize_map_size + ref_count_size, PageSize);
const size_t page_heap_size = KPageHeap::CalculateMetadataOverheadSize(region->GetSize());
const size_t total_metadata_size = manager_size + page_heap_size;
MESOSPHERE_ABORT_UNLESS(manager_size <= total_metadata_size);
MESOSPHERE_ABORT_UNLESS(metadata + total_metadata_size <= metadata_end);
MESOSPHERE_ABORT_UNLESS(util::IsAligned(total_metadata_size, PageSize));
const size_t page_heap_size = KPageHeap::CalculateManagementOverheadSize(region->GetSize());
const size_t total_management_size = manager_size + page_heap_size;
MESOSPHERE_ABORT_UNLESS(manager_size <= total_management_size);
MESOSPHERE_ABORT_UNLESS(management + total_management_size <= management_end);
MESOSPHERE_ABORT_UNLESS(util::IsAligned(total_management_size, PageSize));
/* Setup region. */
this->pool = p;
this->metadata_region = metadata;
this->page_reference_counts = GetPointer<RefCount>(metadata + optimize_map_size);
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(this->metadata_region), PageSize));
this->management_region = management;
this->page_reference_counts = GetPointer<RefCount>(management + optimize_map_size);
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(this->management_region), PageSize));
/* Initialize the manager's KPageHeap. */
this->heap.Initialize(region->GetAddress(), region->GetSize(), metadata + manager_size, page_heap_size);
this->heap.Initialize(region->GetAddress(), region->GetSize(), management + manager_size, page_heap_size);
/* Free the memory to the heap. */
this->heap.Free(region->GetAddress(), region->GetSize() / PageSize);
@ -339,7 +339,7 @@ namespace ams::kern {
/* Update the heap's used size. */
this->heap.UpdateUsedSize();
return total_metadata_size;
return total_management_size;
}
void KMemoryManager::Impl::TrackUnoptimizedAllocation(KVirtualAddress block, size_t num_pages) {
@ -348,7 +348,7 @@ namespace ams::kern {
const size_t last = offset + num_pages - 1;
/* Track. */
u64 *optimize_map = GetPointer<u64>(this->metadata_region);
u64 *optimize_map = GetPointer<u64>(this->management_region);
while (offset <= last) {
/* Mark the page as not being optimized-allocated. */
optimize_map[offset / BITSIZEOF(u64)] &= ~(u64(1) << (offset % BITSIZEOF(u64)));
@ -363,7 +363,7 @@ namespace ams::kern {
const size_t last = offset + num_pages - 1;
/* Track. */
u64 *optimize_map = GetPointer<u64>(this->metadata_region);
u64 *optimize_map = GetPointer<u64>(this->management_region);
while (offset <= last) {
/* Mark the page as being optimized-allocated. */
optimize_map[offset / BITSIZEOF(u64)] |= (u64(1) << (offset % BITSIZEOF(u64)));
@ -381,7 +381,7 @@ namespace ams::kern {
const size_t last = offset + num_pages - 1;
/* Process. */
u64 *optimize_map = GetPointer<u64>(this->metadata_region);
u64 *optimize_map = GetPointer<u64>(this->management_region);
while (offset <= last) {
/* Check if the page has been optimized-allocated before. */
if ((optimize_map[offset / BITSIZEOF(u64)] & (u64(1) << (offset % BITSIZEOF(u64)))) == 0) {
@ -399,11 +399,11 @@ namespace ams::kern {
return any_new;
}
size_t KMemoryManager::Impl::CalculateMetadataOverheadSize(size_t region_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 = (util::AlignUp((region_size / PageSize), BITSIZEOF(u64)) / BITSIZEOF(u64)) * sizeof(u64);
const size_t manager_meta_size = util::AlignUp(optimize_map_size + ref_count_size, PageSize);
const size_t page_heap_size = KPageHeap::CalculateMetadataOverheadSize(region_size);
const size_t page_heap_size = KPageHeap::CalculateManagementOverheadSize(region_size);
return manager_meta_size + page_heap_size;
}

12
libraries/libmesosphere/source/kern_k_page_heap.cpp
View file

@ -17,12 +17,12 @@
namespace ams::kern {
void KPageHeap::Initialize(KVirtualAddress address, size_t size, KVirtualAddress metadata_address, size_t metadata_size, const size_t *block_shifts, size_t num_block_shifts) {
void KPageHeap::Initialize(KVirtualAddress address, size_t size, KVirtualAddress management_address, size_t management_size, const size_t *block_shifts, size_t num_block_shifts) {
/* Check our assumptions. */
MESOSPHERE_ASSERT(util::IsAligned(GetInteger(address), PageSize));
MESOSPHERE_ASSERT(util::IsAligned(size, PageSize));
MESOSPHERE_ASSERT(0 < num_block_shifts && num_block_shifts <= NumMemoryBlockPageShifts);
const KVirtualAddress metadata_end = metadata_address + metadata_size;
const KVirtualAddress management_end = management_address + management_size;
/* Set our members. */
this->heap_address = address;
@ -30,7 +30,7 @@ namespace ams::kern {
this->num_blocks = num_block_shifts;
/* Setup bitmaps. */
u64 *cur_bitmap_storage = GetPointer<u64>(metadata_address);
u64 *cur_bitmap_storage = GetPointer<u64>(management_address);
for (size_t i = 0; i < num_block_shifts; i++) {
const size_t cur_block_shift = block_shifts[i];
const size_t next_block_shift = (i != num_block_shifts - 1) ? block_shifts[i + 1] : 0;
@ -38,7 +38,7 @@ namespace ams::kern {
}
/* Ensure we didn't overextend our bounds. */
MESOSPHERE_ABORT_UNLESS(KVirtualAddress(cur_bitmap_storage) <= metadata_end);
MESOSPHERE_ABORT_UNLESS(KVirtualAddress(cur_bitmap_storage) <= management_end);
}
size_t KPageHeap::GetNumFreePages() const {
@ -122,12 +122,12 @@ namespace ams::kern {
}
}
size_t KPageHeap::CalculateMetadataOverheadSize(size_t region_size, const size_t *block_shifts, size_t num_block_shifts) {
size_t KPageHeap::CalculateManagementOverheadSize(size_t region_size, const size_t *block_shifts, size_t num_block_shifts) {
size_t overhead_size = 0;
for (size_t i = 0; i < num_block_shifts; i++) {
const size_t cur_block_shift = block_shifts[i];
const size_t next_block_shift = (i != num_block_shifts - 1) ? block_shifts[i + 1] : 0;
overhead_size += KPageHeap::Block::CalculateMetadataOverheadSize(region_size, cur_block_shift, next_block_shift);
overhead_size += KPageHeap::Block::CalculateManagementOverheadSize(region_size, cur_block_shift, next_block_shift);
}
return util::AlignUp(overhead_size, PageSize);
}