Merge pull request #8090 from bunnei/fix-skyline
Kernel Memory Updates (Part 7): Various fixes to code memory (Skyline support)
This commit is contained in:
bunnei
GitHub
commit
365c6ad753
@ -28,7 +28,8 @@ ResultCode KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr
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auto& page_table = m_owner->PageTable();
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// Construct the page group.
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m_page_group = KPageLinkedList(addr, Common::DivideUp(size, PageSize));
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m_page_group =
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KPageLinkedList(page_table.GetPhysicalAddr(addr), Common::DivideUp(size, PageSize));
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// Lock the memory.
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R_TRY(page_table.LockForCodeMemory(addr, size))
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@ -89,6 +89,10 @@ public:
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return ResultSuccess;
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}
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bool Empty() const {
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return nodes.empty();
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}
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private:
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std::list<Node> nodes;
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};
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@ -486,6 +486,58 @@ VAddr KPageTable::FindFreeArea(VAddr region_start, std::size_t region_num_pages,
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return address;
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}
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ResultCode KPageTable::MakePageGroup(KPageLinkedList& pg, VAddr addr, size_t num_pages) {
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ASSERT(this->IsLockedByCurrentThread());
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const size_t size = num_pages * PageSize;
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// We're making a new group, not adding to an existing one.
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R_UNLESS(pg.Empty(), ResultInvalidCurrentMemory);
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// Begin traversal.
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Common::PageTable::TraversalContext context;
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Common::PageTable::TraversalEntry next_entry;
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R_UNLESS(page_table_impl.BeginTraversal(next_entry, context, addr), ResultInvalidCurrentMemory);
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// Prepare tracking variables.
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PAddr cur_addr = next_entry.phys_addr;
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size_t cur_size = next_entry.block_size - (cur_addr & (next_entry.block_size - 1));
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size_t tot_size = cur_size;
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// Iterate, adding to group as we go.
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const auto& memory_layout = system.Kernel().MemoryLayout();
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while (tot_size < size) {
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R_UNLESS(page_table_impl.ContinueTraversal(next_entry, context),
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ResultInvalidCurrentMemory);
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if (next_entry.phys_addr != (cur_addr + cur_size)) {
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const size_t cur_pages = cur_size / PageSize;
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R_UNLESS(IsHeapPhysicalAddress(memory_layout, cur_addr), ResultInvalidCurrentMemory);
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R_TRY(pg.AddBlock(cur_addr, cur_pages));
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cur_addr = next_entry.phys_addr;
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cur_size = next_entry.block_size;
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} else {
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cur_size += next_entry.block_size;
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}
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tot_size += next_entry.block_size;
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}
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// Ensure we add the right amount for the last block.
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if (tot_size > size) {
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cur_size -= (tot_size - size);
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}
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// Add the last block.
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const size_t cur_pages = cur_size / PageSize;
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R_UNLESS(IsHeapPhysicalAddress(memory_layout, cur_addr), ResultInvalidCurrentMemory);
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R_TRY(pg.AddBlock(cur_addr, cur_pages));
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return ResultSuccess;
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}
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ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
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KPageTable& src_page_table, VAddr src_addr) {
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KScopedLightLock lk(general_lock);
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@ -1223,6 +1275,31 @@ ResultCode KPageTable::UnmapPages(VAddr address, std::size_t num_pages, KMemoryS
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return ResultSuccess;
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}
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ResultCode KPageTable::MakeAndOpenPageGroup(KPageLinkedList* out, VAddr address, size_t num_pages,
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KMemoryState state_mask, KMemoryState state,
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KMemoryPermission perm_mask, KMemoryPermission perm,
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KMemoryAttribute attr_mask, KMemoryAttribute attr) {
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// Ensure that the page group isn't null.
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ASSERT(out != nullptr);
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// Make sure that the region we're mapping is valid for the table.
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const size_t size = num_pages * PageSize;
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R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
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// Lock the table.
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KScopedLightLock lk(general_lock);
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// Check if state allows us to create the group.
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R_TRY(this->CheckMemoryState(address, size, state_mask | KMemoryState::FlagReferenceCounted,
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state | KMemoryState::FlagReferenceCounted, perm_mask, perm,
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attr_mask, attr));
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// Create a new page group for the region.
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R_TRY(this->MakePageGroup(*out, address, num_pages));
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return ResultSuccess;
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}
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ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
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Svc::MemoryPermission svc_perm) {
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const size_t num_pages = size / PageSize;
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@ -1605,57 +1682,21 @@ ResultCode KPageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size)
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}
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ResultCode KPageTable::LockForCodeMemory(VAddr addr, std::size_t size) {
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KScopedLightLock lk(general_lock);
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KMemoryPermission new_perm = KMemoryPermission::NotMapped | KMemoryPermission::KernelReadWrite;
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KMemoryPermission old_perm{};
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if (const ResultCode result{CheckMemoryState(
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nullptr, &old_perm, nullptr, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
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KMemoryState::FlagCanCodeMemory, KMemoryPermission::All,
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KMemoryPermission::UserReadWrite, KMemoryAttribute::All, KMemoryAttribute::None)};
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result.IsError()) {
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return result;
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}
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new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
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block_manager->UpdateLock(
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addr, size / PageSize,
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[](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
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block->ShareToDevice(permission);
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},
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new_perm);
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return ResultSuccess;
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return this->LockMemoryAndOpen(
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nullptr, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
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KMemoryState::FlagCanCodeMemory, KMemoryPermission::All, KMemoryPermission::UserReadWrite,
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KMemoryAttribute::All, KMemoryAttribute::None,
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static_cast<KMemoryPermission>(KMemoryPermission::NotMapped |
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KMemoryPermission::KernelReadWrite),
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KMemoryAttribute::Locked);
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}
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ResultCode KPageTable::UnlockForCodeMemory(VAddr addr, std::size_t size) {
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KScopedLightLock lk(general_lock);
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KMemoryPermission new_perm = KMemoryPermission::UserReadWrite;
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KMemoryPermission old_perm{};
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if (const ResultCode result{CheckMemoryState(
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nullptr, &old_perm, nullptr, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
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KMemoryState::FlagCanCodeMemory, KMemoryPermission::None, KMemoryPermission::None,
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KMemoryAttribute::All, KMemoryAttribute::Locked)};
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result.IsError()) {
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return result;
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}
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new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
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block_manager->UpdateLock(
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addr, size / PageSize,
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[](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
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block->UnshareToDevice(permission);
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},
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new_perm);
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return ResultSuccess;
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return this->UnlockMemory(addr, size, KMemoryState::FlagCanCodeMemory,
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KMemoryState::FlagCanCodeMemory, KMemoryPermission::None,
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KMemoryPermission::None, KMemoryAttribute::All,
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KMemoryAttribute::Locked, KMemoryPermission::UserReadWrite,
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KMemoryAttribute::Locked, nullptr);
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}
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ResultCode KPageTable::InitializeMemoryLayout(VAddr start, VAddr end) {
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@ -1991,4 +2032,109 @@ ResultCode KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermissi
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return ResultSuccess;
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}
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ResultCode KPageTable::LockMemoryAndOpen(KPageLinkedList* out_pg, PAddr* out_paddr, VAddr addr,
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size_t size, KMemoryState state_mask, KMemoryState state,
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KMemoryPermission perm_mask, KMemoryPermission perm,
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KMemoryAttribute attr_mask, KMemoryAttribute attr,
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KMemoryPermission new_perm, KMemoryAttribute lock_attr) {
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// Validate basic preconditions.
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ASSERT((lock_attr & attr) == KMemoryAttribute::None);
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ASSERT((lock_attr & (KMemoryAttribute::IpcLocked | KMemoryAttribute::DeviceShared)) ==
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KMemoryAttribute::None);
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// Validate the lock request.
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const size_t num_pages = size / PageSize;
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R_UNLESS(this->Contains(addr, size), ResultInvalidCurrentMemory);
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// Lock the table.
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KScopedLightLock lk(general_lock);
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// Check that the output page group is empty, if it exists.
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if (out_pg) {
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ASSERT(out_pg->GetNumPages() == 0);
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}
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// Check the state.
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KMemoryState old_state{};
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KMemoryPermission old_perm{};
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KMemoryAttribute old_attr{};
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size_t num_allocator_blocks{};
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R_TRY(this->CheckMemoryState(std::addressof(old_state), std::addressof(old_perm),
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std::addressof(old_attr), std::addressof(num_allocator_blocks),
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addr, size, state_mask | KMemoryState::FlagReferenceCounted,
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state | KMemoryState::FlagReferenceCounted, perm_mask, perm,
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attr_mask, attr));
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// Get the physical address, if we're supposed to.
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if (out_paddr != nullptr) {
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ASSERT(this->GetPhysicalAddressLocked(out_paddr, addr));
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}
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// Make the page group, if we're supposed to.
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if (out_pg != nullptr) {
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R_TRY(this->MakePageGroup(*out_pg, addr, num_pages));
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}
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// Decide on new perm and attr.
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new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
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KMemoryAttribute new_attr = static_cast<KMemoryAttribute>(old_attr | lock_attr);
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// Update permission, if we need to.
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if (new_perm != old_perm) {
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R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
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}
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// Apply the memory block updates.
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block_manager->Update(addr, num_pages, old_state, new_perm, new_attr);
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return ResultSuccess;
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}
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ResultCode KPageTable::UnlockMemory(VAddr addr, size_t size, KMemoryState state_mask,
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KMemoryState state, KMemoryPermission perm_mask,
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KMemoryPermission perm, KMemoryAttribute attr_mask,
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KMemoryAttribute attr, KMemoryPermission new_perm,
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KMemoryAttribute lock_attr, const KPageLinkedList* pg) {
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// Validate basic preconditions.
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ASSERT((attr_mask & lock_attr) == lock_attr);
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ASSERT((attr & lock_attr) == lock_attr);
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// Validate the unlock request.
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const size_t num_pages = size / PageSize;
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R_UNLESS(this->Contains(addr, size), ResultInvalidCurrentMemory);
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// Lock the table.
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KScopedLightLock lk(general_lock);
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// Check the state.
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KMemoryState old_state{};
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KMemoryPermission old_perm{};
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KMemoryAttribute old_attr{};
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size_t num_allocator_blocks{};
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R_TRY(this->CheckMemoryState(std::addressof(old_state), std::addressof(old_perm),
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std::addressof(old_attr), std::addressof(num_allocator_blocks),
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addr, size, state_mask | KMemoryState::FlagReferenceCounted,
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state | KMemoryState::FlagReferenceCounted, perm_mask, perm,
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attr_mask, attr));
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// Check the page group.
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if (pg != nullptr) {
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UNIMPLEMENTED_MSG("PageGroup support is unimplemented!");
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}
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// Decide on new perm and attr.
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new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
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KMemoryAttribute new_attr = static_cast<KMemoryAttribute>(old_attr & ~lock_attr);
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// Update permission, if we need to.
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if (new_perm != old_perm) {
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R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
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}
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// Apply the memory block updates.
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block_manager->Update(addr, num_pages, old_state, new_perm, new_attr);
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return ResultSuccess;
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}
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} // namespace Kernel
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@ -12,6 +12,7 @@
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#include "core/file_sys/program_metadata.h"
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#include "core/hle/kernel/k_light_lock.h"
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#include "core/hle/kernel/k_memory_block.h"
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#include "core/hle/kernel/k_memory_layout.h"
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#include "core/hle/kernel/k_memory_manager.h"
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#include "core/hle/result.h"
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@ -71,6 +72,10 @@ public:
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ResultCode UnlockForDeviceAddressSpace(VAddr addr, std::size_t size);
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ResultCode LockForCodeMemory(VAddr addr, std::size_t size);
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ResultCode UnlockForCodeMemory(VAddr addr, std::size_t size);
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ResultCode MakeAndOpenPageGroup(KPageLinkedList* out, VAddr address, size_t num_pages,
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KMemoryState state_mask, KMemoryState state,
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KMemoryPermission perm_mask, KMemoryPermission perm,
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KMemoryAttribute attr_mask, KMemoryAttribute attr);
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Common::PageTable& PageTableImpl() {
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return page_table_impl;
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@ -159,10 +164,37 @@ private:
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attr_mask, attr, ignore_attr);
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}
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ResultCode LockMemoryAndOpen(KPageLinkedList* out_pg, PAddr* out_paddr, VAddr addr, size_t size,
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KMemoryState state_mask, KMemoryState state,
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KMemoryPermission perm_mask, KMemoryPermission perm,
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KMemoryAttribute attr_mask, KMemoryAttribute attr,
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KMemoryPermission new_perm, KMemoryAttribute lock_attr);
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ResultCode UnlockMemory(VAddr addr, size_t size, KMemoryState state_mask, KMemoryState state,
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KMemoryPermission perm_mask, KMemoryPermission perm,
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KMemoryAttribute attr_mask, KMemoryAttribute attr,
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KMemoryPermission new_perm, KMemoryAttribute lock_attr,
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const KPageLinkedList* pg);
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ResultCode MakePageGroup(KPageLinkedList& pg, VAddr addr, size_t num_pages);
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bool IsLockedByCurrentThread() const {
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return general_lock.IsLockedByCurrentThread();
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}
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bool IsHeapPhysicalAddress(const KMemoryLayout& layout, PAddr phys_addr) {
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ASSERT(this->IsLockedByCurrentThread());
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return layout.IsHeapPhysicalAddress(cached_physical_heap_region, phys_addr);
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}
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bool GetPhysicalAddressLocked(PAddr* out, VAddr virt_addr) const {
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ASSERT(this->IsLockedByCurrentThread());
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*out = GetPhysicalAddr(virt_addr);
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return *out != 0;
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}
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mutable KLightLock general_lock;
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mutable KLightLock map_physical_memory_lock;
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@ -322,6 +354,7 @@ private:
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bool is_aslr_enabled{};
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u32 heap_fill_value{};
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const KMemoryRegion* cached_physical_heap_region{};
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KMemoryManager::Pool memory_pool{KMemoryManager::Pool::Application};
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KMemoryManager::Direction allocation_option{KMemoryManager::Direction::FromFront};
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@ -1362,8 +1362,11 @@ static ResultCode MapProcessMemory(Core::System& system, VAddr dst_address, Hand
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ResultInvalidMemoryRegion);
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// Create a new page group.
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KMemoryInfo kBlockInfo = dst_pt.QueryInfo(dst_address);
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KPageLinkedList pg(kBlockInfo.GetAddress(), kBlockInfo.GetNumPages());
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KPageLinkedList pg;
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R_TRY(src_pt.MakeAndOpenPageGroup(
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std::addressof(pg), src_address, size / PageSize, KMemoryState::FlagCanMapProcess,
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KMemoryState::FlagCanMapProcess, KMemoryPermission::None, KMemoryPermission::None,
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KMemoryAttribute::All, KMemoryAttribute::None));
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// Map the group.
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R_TRY(dst_pt.MapPages(dst_address, pg, KMemoryState::SharedCode,
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@ -1408,8 +1411,8 @@ static ResultCode UnmapProcessMemory(Core::System& system, VAddr dst_address, Ha
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}
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static ResultCode CreateCodeMemory(Core::System& system, Handle* out, VAddr address, size_t size) {
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LOG_TRACE(Kernel_SVC, "called, handle_out={}, address=0x{:X}, size=0x{:X}",
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static_cast<void*>(out), address, size);
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LOG_TRACE(Kernel_SVC, "called, address=0x{:X}, size=0x{:X}", address, size);
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// Get kernel instance.
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auto& kernel = system.Kernel();
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@ -1664,7 +1667,7 @@ static ResultCode UnmapProcessCodeMemory(Core::System& system, Handle process_ha
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return ResultInvalidAddress;
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}
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if (size == 0 || Common::Is4KBAligned(size)) {
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if (size == 0 || !Common::Is4KBAligned(size)) {
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LOG_ERROR(Kernel_SVC, "Size is zero or not page-aligned (size=0x{:016X}).", size);
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return ResultInvalidSize;
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}
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