nold/Atmosphere
1
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere synced 2024-12-22 20:31:14 +00:00
Code Issues Projects Releases Packages Wiki Activity

kern: implement DisableDeviceAddressSpaceMerge

Browse source
This commit is contained in:
Michael Scire 2020-12-01 06:53:22 -08:00
parent 74e0ea1033
commit b393f8f348
11 changed files with 214 additions and 72 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table.hpp
View file

@ -176,7 +176,7 @@ namespace ams::kern::arch::arm64 {
}
NOINLINE Result InitializeForKernel(void *table, KVirtualAddress start, KVirtualAddress end);
NOINLINE Result InitializeForProcess(u32 id, ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager, KPageTableManager *pt_manager);
NOINLINE Result InitializeForProcess(u32 id, ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool enable_das_merge, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager, KPageTableManager *pt_manager);
Result Finalize();
private:
Result MapL1Blocks(KProcessAddress virt_addr, KPhysicalAddress phys_addr, size_t num_pages, PageTableEntry entry_template, bool disable_head_merge, PageLinkedList *page_list, bool reuse_ll);

12
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_process_page_table.hpp
View file

@ -30,8 +30,8 @@ namespace ams::kern::arch::arm64 {
this->page_table.Activate(id);
}
Result Initialize(u32 id, ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager, KPageTableManager *pt_manager) {
return this->page_table.InitializeForProcess(id, as_type, enable_aslr, from_back, pool, code_address, code_size, mem_block_slab_manager, block_info_manager, pt_manager);
Result Initialize(u32 id, ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool enable_das_merge, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager, KPageTableManager *pt_manager) {
return this->page_table.InitializeForProcess(id, as_type, enable_aslr, enable_das_merge, from_back, pool, code_address, code_size, mem_block_slab_manager, block_info_manager, pt_manager);
}
void Finalize() { this->page_table.Finalize(); }
@ -152,6 +152,14 @@ namespace ams::kern::arch::arm64 {
return this->page_table.UnlockForDeviceAddressSpace(address, size);
}
Result MakePageGroupForUnmapDeviceAddressSpace(KPageGroup *out, KProcessAddress address, size_t size) {
return this->page_table.MakePageGroupForUnmapDeviceAddressSpace(out, address, size);
}
Result UnlockForDeviceAddressSpacePartialMap(KProcessAddress address, size_t size, size_t mapped_size) {
return this->page_table.UnlockForDeviceAddressSpacePartialMap(address, size, mapped_size);
}
Result LockForIpcUserBuffer(KPhysicalAddress *out, KProcessAddress address, size_t size) {
return this->page_table.LockForIpcUserBuffer(out, address, size);
}

4
libraries/libmesosphere/include/mesosphere/board/nintendo/nx/kern_k_device_page_table.hpp
View file

@ -71,6 +71,10 @@ namespace ams::kern::board::nintendo::nx {
Result Map(size_t *out_mapped_size, const KPageGroup &pg, KDeviceVirtualAddress device_address, ams::svc::MemoryPermission device_perm, bool refresh_mappings);
Result Unmap(const KPageGroup &pg, KDeviceVirtualAddress device_address);
void Unmap(KDeviceVirtualAddress device_address, size_t size) {
return this->UnmapImpl(device_address, size, false);
}
private:
Result MapDevicePage(size_t *out_mapped_size, s32 &num_pt, s32 max_pt, KPhysicalAddress phys_addr, u64 size, KDeviceVirtualAddress address, ams::svc::MemoryPermission device_perm);

3
libraries/libmesosphere/include/mesosphere/kern_k_memory_block_manager.hpp
View file

@ -76,6 +76,7 @@ namespace ams::kern {
class KMemoryBlockManager {
public:
using MemoryBlockTree = util::IntrusiveRedBlackTreeBaseTraits<KMemoryBlock>::TreeType<KMemoryBlock>;
using MemoryBlockLockFunction = void (KMemoryBlock::*)(KMemoryPermission new_perm, bool left, bool right);
using iterator = MemoryBlockTree::iterator;
using const_iterator = MemoryBlockTree::const_iterator;
private:
@ -97,7 +98,7 @@ namespace ams::kern {
KProcessAddress FindFreeArea(KProcessAddress region_start, size_t region_num_pages, size_t num_pages, size_t alignment, size_t offset, size_t guard_pages) const;
void Update(KMemoryBlockManagerUpdateAllocator *allocator, KProcessAddress address, size_t num_pages, KMemoryState state, KMemoryPermission perm, KMemoryAttribute attr, KMemoryBlockDisableMergeAttribute set_disable_attr, KMemoryBlockDisableMergeAttribute clear_disable_attr);
void UpdateLock(KMemoryBlockManagerUpdateAllocator *allocator, KProcessAddress address, size_t num_pages, void (KMemoryBlock::*lock_func)(KMemoryPermission new_perm, bool left, bool right), KMemoryPermission perm);
void UpdateLock(KMemoryBlockManagerUpdateAllocator *allocator, KProcessAddress address, size_t num_pages, MemoryBlockLockFunction lock_func, KMemoryPermission perm);
void UpdateIfMatch(KMemoryBlockManagerUpdateAllocator *allocator, KProcessAddress address, size_t num_pages, KMemoryState test_state, KMemoryPermission test_perm, KMemoryAttribute test_attr, KMemoryState state, KMemoryPermission perm, KMemoryAttribute attr);

11
libraries/libmesosphere/include/mesosphere/kern_k_page_table_base.hpp
View file

@ -158,6 +158,7 @@ namespace ams::kern {
u32 address_space_width;
bool is_kernel;
bool enable_aslr;
bool enable_device_address_space_merge;
KMemoryBlockSlabManager *memory_block_slab_manager;
KBlockInfoManager *block_info_manager;
const KMemoryRegion *cached_physical_linear_region;
@ -172,15 +173,15 @@ namespace ams::kern {
alias_region_start(), alias_region_end(), stack_region_start(), stack_region_end(), kernel_map_region_start(),
kernel_map_region_end(), alias_code_region_start(), alias_code_region_end(), code_region_start(), code_region_end(),
max_heap_size(), mapped_physical_memory_size(), mapped_unsafe_physical_memory(), general_lock(), map_physical_memory_lock(),
impl(), memory_block_manager(), allocate_option(), address_space_width(), is_kernel(), enable_aslr(), memory_block_slab_manager(),
block_info_manager(), cached_physical_linear_region(), cached_physical_heap_region(), cached_virtual_heap_region(),
impl(), memory_block_manager(), allocate_option(), address_space_width(), is_kernel(), enable_aslr(), enable_device_address_space_merge(),
memory_block_slab_manager(), block_info_manager(), cached_physical_linear_region(), cached_physical_heap_region(), cached_virtual_heap_region(),
heap_fill_value(), ipc_fill_value(), stack_fill_value()
{
/* ... */
}
NOINLINE Result InitializeForKernel(bool is_64_bit, void *table, KVirtualAddress start, KVirtualAddress end);
NOINLINE Result InitializeForProcess(ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool from_back, KMemoryManager::Pool pool, void *table, KProcessAddress start, KProcessAddress end, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager);
NOINLINE Result InitializeForProcess(ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool enable_device_address_space_merge, bool from_back, KMemoryManager::Pool pool, void *table, KProcessAddress start, KProcessAddress end, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager);
void Finalize();
@ -353,6 +354,10 @@ namespace ams::kern {
Result LockForDeviceAddressSpace(KPageGroup *out, KProcessAddress address, size_t size, KMemoryPermission perm, bool is_aligned);
Result UnlockForDeviceAddressSpace(KProcessAddress address, size_t size);
Result MakePageGroupForUnmapDeviceAddressSpace(KPageGroup *out, KProcessAddress address, size_t size);
Result UnlockForDeviceAddressSpacePartialMap(KProcessAddress address, size_t size, size_t mapped_size);
Result LockForIpcUserBuffer(KPhysicalAddress *out, KProcessAddress address, size_t size);
Result UnlockForIpcUserBuffer(KProcessAddress address, size_t size);

4
libraries/libmesosphere/source/arch/arm64/kern_k_page_table.cpp
View file

@ -181,7 +181,7 @@ namespace ams::kern::arch::arm64 {
return ResultSuccess();
}
Result KPageTable::InitializeForProcess(u32 id, ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager, KPageTableManager *pt_manager) {
Result KPageTable::InitializeForProcess(u32 id, ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool enable_das_merge, bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager, KPageTableManager *pt_manager) {
/* The input ID isn't actually used. */
MESOSPHERE_UNUSED(id);
@ -202,7 +202,7 @@ namespace ams::kern::arch::arm64 {
const size_t as_width = GetAddressSpaceWidth(as_type);
const KProcessAddress as_start = 0;
const KProcessAddress as_end = (1ul << as_width);
R_TRY(KPageTableBase::InitializeForProcess(as_type, enable_aslr, from_back, pool, GetVoidPointer(new_table), as_start, as_end, code_address, code_size, mem_block_slab_manager, block_info_manager));
R_TRY(KPageTableBase::InitializeForProcess(as_type, enable_aslr, enable_das_merge, from_back, pool, GetVoidPointer(new_table), as_start, as_end, code_address, code_size, mem_block_slab_manager, block_info_manager));
/* We succeeded! */
table_guard.Cancel();

39
libraries/libmesosphere/source/kern_k_device_address_space.cpp
View file

@ -79,25 +79,30 @@ namespace ams::kern {
ON_SCOPE_EXIT { pg.Close(); };
/* Ensure that if we fail, we don't keep unmapped pages locked. */
ON_SCOPE_EXIT {
if (*out_mapped_size != size) {
page_table->UnlockForDeviceAddressSpace(process_address + *out_mapped_size, size - *out_mapped_size);
};
};
auto unlock_guard = SCOPE_GUARD { MESOSPHERE_R_ABORT_UNLESS(page_table->UnlockForDeviceAddressSpace(process_address, size)); };
/* Map the pages. */
{
/* Clear the output size to zero on failure. */
auto map_guard = SCOPE_GUARD { *out_mapped_size = 0; };
auto mapped_size_guard = SCOPE_GUARD { *out_mapped_size = 0; };
/* Perform the mapping. */
R_TRY(this->table.Map(out_mapped_size, pg, device_address, device_perm, refresh_mappings));
/* We succeeded, so cancel our guard. */
/* Ensure that we unmap the pages if we fail to update the protections. */
/* NOTE: Nintendo does not check the result of this unmap call. */
auto map_guard = SCOPE_GUARD { this->table.Unmap(device_address, *out_mapped_size); };
/* Update the protections in accordance with how much we mapped. */
R_TRY(page_table->UnlockForDeviceAddressSpacePartialMap(process_address, size, *out_mapped_size));
/* We succeeded, so cancel our guards. */
map_guard.Cancel();
mapped_size_guard.Cancel();
}
/* We succeeded, so we don't need to unlock our pages. */
unlock_guard.Cancel();
return ResultSuccess();
}
@ -110,19 +115,23 @@ namespace ams::kern {
/* Make and open a page group for the unmapped region. */
KPageGroup pg(page_table->GetBlockInfoManager());
R_TRY(page_table->MakeAndOpenPageGroupContiguous(std::addressof(pg), process_address, size / PageSize,
KMemoryState_FlagCanDeviceMap, KMemoryState_FlagCanDeviceMap,
KMemoryPermission_None, KMemoryPermission_None,
KMemoryAttribute_DeviceShared | KMemoryAttribute_Locked, KMemoryAttribute_DeviceShared));
R_TRY(page_table->MakePageGroupForUnmapDeviceAddressSpace(std::addressof(pg), process_address, size));
/* Ensure the page group is closed on scope exit. */
ON_SCOPE_EXIT { pg.Close(); };
/* Unmap. */
R_TRY(this->table.Unmap(pg, device_address));
/* If we fail to unmap, we want to do a partial unlock. */
{
auto unlock_guard = SCOPE_GUARD { page_table->UnlockForDeviceAddressSpacePartialMap(process_address, size, size); };
/* Unmap. */
R_TRY(this->table.Unmap(pg, device_address));
unlock_guard.Cancel();
}
/* Unlock the pages. */
R_TRY(page_table->UnlockForDeviceAddressSpace(process_address, size));
MESOSPHERE_R_ABORT_UNLESS(page_table->UnlockForDeviceAddressSpace(process_address, size));
return ResultSuccess();
}

3
libraries/libmesosphere/source/kern_k_initial_process_reader.cpp
View file

@ -140,6 +140,9 @@ namespace ams::kern {
out->flags |= ams::svc::CreateProcessFlag_AddressSpace32Bit;
}
/* All initial processes should disable device address space merge. */
out->flags |= ams::svc::CreateProcessFlag_DisableDeviceAddressSpaceMerge;
return ResultSuccess();
}

2
libraries/libmesosphere/source/kern_k_memory_block_manager.cpp
View file

@ -287,7 +287,7 @@ namespace ams::kern {
this->CoalesceForUpdate(allocator, address, num_pages);
}
void KMemoryBlockManager::UpdateLock(KMemoryBlockManagerUpdateAllocator *allocator, KProcessAddress address, size_t num_pages, void (KMemoryBlock::*lock_func)(KMemoryPermission new_perm, bool left, bool right), KMemoryPermission perm) {
void KMemoryBlockManager::UpdateLock(KMemoryBlockManagerUpdateAllocator *allocator, KProcessAddress address, size_t num_pages, MemoryBlockLockFunction lock_func, KMemoryPermission perm) {
/* Ensure for auditing that we never end up with an invalid tree. */
KScopedMemoryBlockManagerAuditor auditor(this);
MESOSPHERE_ASSERT(util::IsAligned(GetInteger(address), PageSize));

184
libraries/libmesosphere/source/kern_k_page_table_base.cpp
View file

@ -20,40 +20,41 @@ namespace ams::kern {
Result KPageTableBase::InitializeForKernel(bool is_64_bit, void *table, KVirtualAddress start, KVirtualAddress end) {
/* Initialize our members. */
this->address_space_width = (is_64_bit) ? BITSIZEOF(u64) : BITSIZEOF(u32);
this->address_space_start = KProcessAddress(GetInteger(start));
this->address_space_end = KProcessAddress(GetInteger(end));
this->is_kernel = true;
this->enable_aslr = true;
this->address_space_width = (is_64_bit) ? BITSIZEOF(u64) : BITSIZEOF(u32);
this->address_space_start = KProcessAddress(GetInteger(start));
this->address_space_end = KProcessAddress(GetInteger(end));
this->is_kernel = true;
this->enable_aslr = true;
this->enable_device_address_space_merge = false;
this->heap_region_start = 0;
this->heap_region_end = 0;
this->current_heap_end = 0;
this->alias_region_start = 0;
this->alias_region_end = 0;
this->stack_region_start = 0;
this->stack_region_end = 0;
this->kernel_map_region_start = 0;
this->kernel_map_region_end = 0;
this->alias_code_region_start = 0;
this->alias_code_region_end = 0;
this->code_region_start = 0;
this->code_region_end = 0;
this->max_heap_size = 0;
this->mapped_physical_memory_size = 0;
this->mapped_unsafe_physical_memory = 0;
this->heap_region_start = 0;
this->heap_region_end = 0;
this->current_heap_end = 0;
this->alias_region_start = 0;
this->alias_region_end = 0;
this->stack_region_start = 0;
this->stack_region_end = 0;
this->kernel_map_region_start = 0;
this->kernel_map_region_end = 0;
this->alias_code_region_start = 0;
this->alias_code_region_end = 0;
this->code_region_start = 0;
this->code_region_end = 0;
this->max_heap_size = 0;
this->mapped_physical_memory_size = 0;
this->mapped_unsafe_physical_memory = 0;
this->memory_block_slab_manager = std::addressof(Kernel::GetSystemMemoryBlockManager());
this->block_info_manager = std::addressof(Kernel::GetBlockInfoManager());
this->memory_block_slab_manager = std::addressof(Kernel::GetSystemMemoryBlockManager());
this->block_info_manager = std::addressof(Kernel::GetBlockInfoManager());
this->allocate_option = KMemoryManager::EncodeOption(KMemoryManager::Pool_System, KMemoryManager::Direction_FromFront);
this->heap_fill_value = MemoryFillValue_Zero;
this->ipc_fill_value = MemoryFillValue_Zero;
this->stack_fill_value = MemoryFillValue_Zero;
this->allocate_option = KMemoryManager::EncodeOption(KMemoryManager::Pool_System, KMemoryManager::Direction_FromFront);
this->heap_fill_value = MemoryFillValue_Zero;
this->ipc_fill_value = MemoryFillValue_Zero;
this->stack_fill_value = MemoryFillValue_Zero;
this->cached_physical_linear_region = nullptr;
this->cached_physical_heap_region = nullptr;
this->cached_virtual_heap_region = nullptr;
this->cached_physical_linear_region = nullptr;
this->cached_physical_heap_region = nullptr;
this->cached_virtual_heap_region = nullptr;
/* Initialize our implementation. */
this->impl.InitializeForKernel(table, start, end);
@ -64,7 +65,7 @@ namespace ams::kern {
return ResultSuccess();
}
Result KPageTableBase::InitializeForProcess(ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool from_back, KMemoryManager::Pool pool, void *table, KProcessAddress start, KProcessAddress end, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager) {
Result KPageTableBase::InitializeForProcess(ams::svc::CreateProcessFlag as_type, bool enable_aslr, bool enable_das_merge, bool from_back, KMemoryManager::Pool pool, void *table, KProcessAddress start, KProcessAddress end, KProcessAddress code_address, size_t code_size, KMemoryBlockSlabManager *mem_block_slab_manager, KBlockInfoManager *block_info_manager) {
/* Validate the region. */
MESOSPHERE_ABORT_UNLESS(start <= code_address);
MESOSPHERE_ABORT_UNLESS(code_address < code_address + code_size);
@ -123,12 +124,13 @@ namespace ams::kern {
}
/* Set other basic fields. */
this->enable_aslr = enable_aslr;
this->address_space_start = start;
this->address_space_end = end;
this->is_kernel = false;
this->memory_block_slab_manager = mem_block_slab_manager;
this->block_info_manager = block_info_manager;
this->enable_aslr = enable_aslr;
this->enable_device_address_space_merge = enable_das_merge;
this->address_space_start = start;
this->address_space_end = end;
this->is_kernel = false;
this->memory_block_slab_manager = mem_block_slab_manager;
this->block_info_manager = block_info_manager;
/* Determine the region we can place our undetermineds in. */
KProcessAddress alloc_start;
@ -2356,6 +2358,114 @@ namespace ams::kern {
return ResultSuccess();
}
Result KPageTableBase::MakePageGroupForUnmapDeviceAddressSpace(KPageGroup *out, KProcessAddress address, size_t size) {
/* Lightly validate the range before doing anything else. */
const size_t num_pages = size / PageSize;
R_UNLESS(this->Contains(address, size), svc::ResultInvalidCurrentMemory());
/* Lock the table. */
KScopedLightLock lk(this->general_lock);
/* Check the memory state. */
size_t num_allocator_blocks;
R_TRY(this->CheckMemoryStateContiguous(std::addressof(num_allocator_blocks),
address, size,
KMemoryState_FlagReferenceCounted | KMemoryState_FlagCanDeviceMap, KMemoryState_FlagReferenceCounted | KMemoryState_FlagCanDeviceMap,
KMemoryPermission_None, KMemoryPermission_None,
KMemoryAttribute_DeviceShared | KMemoryAttribute_Locked, KMemoryAttribute_DeviceShared));
/* Create an update allocator. */
KMemoryBlockManagerUpdateAllocator allocator(this->memory_block_slab_manager);
R_TRY(allocator.Initialize(num_allocator_blocks));
/* Make the page group. */
R_TRY(this->MakePageGroup(*out, address, num_pages));
/* Update the memory blocks. */
const KMemoryBlockManager::MemoryBlockLockFunction lock_func = this->enable_device_address_space_merge ? &KMemoryBlock::UpdateDeviceDisableMergeStateForShare : &KMemoryBlock::UpdateDeviceDisableMergeStateForShareRight;
this->memory_block_manager.UpdateLock(std::addressof(allocator), address, num_pages, lock_func, KMemoryPermission_None);
/* Open a reference to the pages in the page group. */
out->Open();
return ResultSuccess();
}
Result KPageTableBase::UnlockForDeviceAddressSpacePartialMap(KProcessAddress address, size_t size, size_t mapped_size) {
/* Lightly validate the range before doing anything else. */
const size_t num_pages = size / PageSize;
R_UNLESS(this->Contains(address, size), svc::ResultInvalidCurrentMemory());
/* Lock the table. */
KScopedLightLock lk(this->general_lock);
/* Determine useful extents. */
const KProcessAddress mapped_end_address = address + mapped_size;
const size_t unmapped_size = size - mapped_size;
/* Check memory state. */
size_t allocator_num_blocks = 0, unmapped_allocator_num_blocks = 0;
if (unmapped_size) {
if (this->enable_device_address_space_merge) {
R_TRY(this->CheckMemoryState(std::addressof(allocator_num_blocks),
address, size,
KMemoryState_FlagCanDeviceMap, KMemoryState_FlagCanDeviceMap,
KMemoryPermission_None, KMemoryPermission_None,
KMemoryAttribute_DeviceShared | KMemoryAttribute_Locked, KMemoryAttribute_DeviceShared));
}
R_TRY(this->CheckMemoryState(std::addressof(unmapped_allocator_num_blocks),
mapped_end_address, unmapped_size,
KMemoryState_FlagCanDeviceMap, KMemoryState_FlagCanDeviceMap,
KMemoryPermission_None, KMemoryPermission_None,
KMemoryAttribute_DeviceShared | KMemoryAttribute_Locked, KMemoryAttribute_DeviceShared));
} else {
R_TRY(this->CheckMemoryState(std::addressof(allocator_num_blocks),
address, size,
KMemoryState_FlagCanDeviceMap, KMemoryState_FlagCanDeviceMap,
KMemoryPermission_None, KMemoryPermission_None,
KMemoryAttribute_DeviceShared | KMemoryAttribute_Locked, KMemoryAttribute_DeviceShared));
}
/* Create an update allocator for the region. */
KMemoryBlockManagerUpdateAllocator allocator(this->memory_block_slab_manager);
R_TRY(allocator.Initialize(allocator_num_blocks));
/* Create an update allocator for the unmapped region. */
KMemoryBlockManagerUpdateAllocator unmapped_allocator(this->memory_block_slab_manager);
R_TRY(unmapped_allocator.Initialize(unmapped_allocator_num_blocks));
/* Determine parameters for the update lock call. */
KMemoryBlockManagerUpdateAllocator *lock_allocator;
KProcessAddress lock_address;
size_t lock_num_pages;
KMemoryBlockManager::MemoryBlockLockFunction lock_func;
if (unmapped_size) {
/* If device address space merge is enabled, update tracking appropriately. */
if (this->enable_device_address_space_merge) {
this->memory_block_manager.UpdateLock(std::addressof(allocator), address, num_pages, &KMemoryBlock::UpdateDeviceDisableMergeStateForUnshareLeft, KMemoryPermission_None);
}
lock_allocator = std::addressof(unmapped_allocator);
lock_address = mapped_end_address;
lock_num_pages = unmapped_size / PageSize;
lock_func = &KMemoryBlock::UnshareToDeviceRight;
} else {
lock_allocator = std::addressof(allocator);
lock_address = address;
lock_num_pages = num_pages;
if (this->enable_device_address_space_merge) {
lock_func = &KMemoryBlock::UpdateDeviceDisableMergeStateForUnshare;
} else {
lock_func = &KMemoryBlock::UpdateDeviceDisableMergeStateForUnshareRight;
}
}
/* Update the memory blocks. */
this->memory_block_manager.UpdateLock(lock_allocator, lock_address, lock_num_pages, lock_func, KMemoryPermission_None);
return ResultSuccess();
}
Result KPageTableBase::LockForIpcUserBuffer(KPhysicalAddress *out, KProcessAddress address, size_t size) {
return this->LockMemoryAndOpen(nullptr, out, address, size,
KMemoryState_FlagCanIpcUserBuffer, KMemoryState_FlagCanIpcUserBuffer,

22
libraries/libmesosphere/source/kern_k_process.cpp
View file

@ -237,13 +237,14 @@ namespace ams::kern {
/* NOTE: Nintendo passes process ID despite not having set it yet. */
/* This goes completely unused, but even so... */
{
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr);
const bool is_app = (params.flags & ams::svc::CreateProcessFlag_IsApplication);
auto *mem_block_manager = std::addressof(is_app ? Kernel::GetApplicationMemoryBlockManager() : Kernel::GetSystemMemoryBlockManager());
auto *block_info_manager = std::addressof(Kernel::GetBlockInfoManager());
auto *pt_manager = std::addressof(Kernel::GetPageTableManager());
R_TRY(this->page_table.Initialize(this->process_id, as_type, enable_aslr, !enable_aslr, pool, params.code_address, params.code_num_pages * PageSize, mem_block_manager, block_info_manager, pt_manager));
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr) != 0;
const bool enable_das_merge = (params.flags & ams::svc::CreateProcessFlag_DisableDeviceAddressSpaceMerge) == 0;
const bool is_app = (params.flags & ams::svc::CreateProcessFlag_IsApplication) != 0;
auto *mem_block_manager = std::addressof(is_app ? Kernel::GetApplicationMemoryBlockManager() : Kernel::GetSystemMemoryBlockManager());
auto *block_info_manager = std::addressof(Kernel::GetBlockInfoManager());
auto *pt_manager = std::addressof(Kernel::GetPageTableManager());
R_TRY(this->page_table.Initialize(this->process_id, as_type, enable_aslr, enable_das_merge, !enable_aslr, pool, params.code_address, params.code_num_pages * PageSize, mem_block_manager, block_info_manager, pt_manager));
}
auto pt_guard = SCOPE_GUARD { this->page_table.Finalize(); };
@ -344,9 +345,10 @@ namespace ams::kern {
/* NOTE: Nintendo passes process ID despite not having set it yet. */
/* This goes completely unused, but even so... */
{
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr);
R_TRY(this->page_table.Initialize(this->process_id, as_type, enable_aslr, !enable_aslr, pool, params.code_address, code_size, mem_block_manager, block_info_manager, pt_manager));
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr) != 0;
const bool enable_das_merge = (params.flags & ams::svc::CreateProcessFlag_DisableDeviceAddressSpaceMerge) == 0;
R_TRY(this->page_table.Initialize(this->process_id, as_type, enable_aslr, enable_das_merge, !enable_aslr, pool, params.code_address, code_size, mem_block_manager, block_info_manager, pt_manager));
}
auto pt_guard = SCOPE_GUARD { this->page_table.Finalize(); };