kernel: KPageTable: update
This commit is contained in:
Liam
parent
78df1ddce8
commit
31e54c4573
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@ -74,7 +74,7 @@ Result KCodeMemory::Map(VAddr address, size_t size) {
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R_UNLESS(!m_is_mapped, ResultInvalidState);
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// Map the memory.
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R_TRY(kernel.CurrentProcess()->PageTable().MapPages(
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R_TRY(kernel.CurrentProcess()->PageTable().MapPageGroup(
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address, *m_page_group, KMemoryState::CodeOut, KMemoryPermission::UserReadWrite));
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// Mark ourselves as mapped.
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@ -91,7 +91,7 @@ Result KCodeMemory::Unmap(VAddr address, size_t size) {
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KScopedLightLock lk(m_lock);
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// Unmap the memory.
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R_TRY(kernel.CurrentProcess()->PageTable().UnmapPages(address, *m_page_group,
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R_TRY(kernel.CurrentProcess()->PageTable().UnmapPageGroup(address, *m_page_group,
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KMemoryState::CodeOut));
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// Mark ourselves as unmapped.
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@ -125,8 +125,8 @@ Result KCodeMemory::MapToOwner(VAddr address, size_t size, Svc::MemoryPermission
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}
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// Map the memory.
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R_TRY(
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m_owner->PageTable().MapPages(address, *m_page_group, KMemoryState::GeneratedCode, k_perm));
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R_TRY(m_owner->PageTable().MapPageGroup(address, *m_page_group, KMemoryState::GeneratedCode,
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k_perm));
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// Mark ourselves as mapped.
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m_is_owner_mapped = true;
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@ -142,7 +142,7 @@ Result KCodeMemory::UnmapFromOwner(VAddr address, size_t size) {
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KScopedLightLock lk(m_lock);
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// Unmap the memory.
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R_TRY(m_owner->PageTable().UnmapPages(address, *m_page_group, KMemoryState::GeneratedCode));
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R_TRY(m_owner->PageTable().UnmapPageGroup(address, *m_page_group, KMemoryState::GeneratedCode));
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// Mark ourselves as unmapped.
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m_is_owner_mapped = false;
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@ -435,6 +435,9 @@ Result KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, size_t si
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KPageGroup pg{m_kernel, m_block_info_manager};
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AddRegionToPages(src_address, num_pages, pg);
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// We're going to perform an update, so create a helper.
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KScopedPageTableUpdater updater(this);
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// Reprotect the source as kernel-read/not mapped.
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const auto new_perm = static_cast<KMemoryPermission>(KMemoryPermission::KernelRead |
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KMemoryPermission::NotMapped);
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@ -447,7 +450,10 @@ Result KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, size_t si
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});
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// Map the alias pages.
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R_TRY(MapPages(dst_address, pg, new_perm));
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const KPageProperties dst_properties = {new_perm, false, false,
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DisableMergeAttribute::DisableHead};
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R_TRY(
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this->MapPageGroupImpl(updater.GetPageList(), dst_address, pg, dst_properties, false));
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// We successfully mapped the alias pages, so we don't need to unprotect the src pages on
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// failure.
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@ -1881,7 +1887,8 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
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R_SUCCEED();
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}
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Result KPageTable::MapMemory(VAddr dst_address, VAddr src_address, size_t size) {
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Result KPageTable::MapMemory(KProcessAddress dst_address, KProcessAddress src_address,
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size_t size) {
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// Lock the table.
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KScopedLightLock lk(m_general_lock);
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@ -1902,53 +1909,73 @@ Result KPageTable::MapMemory(VAddr dst_address, VAddr src_address, size_t size)
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KMemoryAttribute::None));
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// Create an update allocator for the source.
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Result src_allocator_result{ResultSuccess};
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Result src_allocator_result;
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KMemoryBlockManagerUpdateAllocator src_allocator(std::addressof(src_allocator_result),
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m_memory_block_slab_manager,
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num_src_allocator_blocks);
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R_TRY(src_allocator_result);
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// Create an update allocator for the destination.
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Result dst_allocator_result{ResultSuccess};
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Result dst_allocator_result;
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KMemoryBlockManagerUpdateAllocator dst_allocator(std::addressof(dst_allocator_result),
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m_memory_block_slab_manager,
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num_dst_allocator_blocks);
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R_TRY(dst_allocator_result);
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// Map the memory.
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KPageGroup page_linked_list{m_kernel, m_block_info_manager};
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const size_t num_pages{size / PageSize};
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{
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// Determine the number of pages being operated on.
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const size_t num_pages = size / PageSize;
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// Create page groups for the memory being unmapped.
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KPageGroup pg{m_kernel, m_block_info_manager};
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// Create the page group representing the source.
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R_TRY(this->MakePageGroup(pg, src_address, num_pages));
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// We're going to perform an update, so create a helper.
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KScopedPageTableUpdater updater(this);
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// Reprotect the source as kernel-read/not mapped.
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const KMemoryPermission new_src_perm = static_cast<KMemoryPermission>(
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KMemoryPermission::KernelRead | KMemoryPermission::NotMapped);
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const KMemoryAttribute new_src_attr = KMemoryAttribute::Locked;
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const KPageProperties src_properties = {new_src_perm, false, false,
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DisableMergeAttribute::DisableHeadBodyTail};
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R_TRY(this->Operate(src_address, num_pages, src_properties.perm,
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OperationType::ChangePermissions));
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AddRegionToPages(src_address, num_pages, page_linked_list);
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{
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// Reprotect the source as kernel-read/not mapped.
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auto block_guard = detail::ScopeExit([&] {
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Operate(src_address, num_pages, KMemoryPermission::UserReadWrite,
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OperationType::ChangePermissions);
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});
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R_TRY(Operate(src_address, num_pages, new_src_perm, OperationType::ChangePermissions));
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R_TRY(MapPages(dst_address, page_linked_list, KMemoryPermission::UserReadWrite));
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// Ensure that we unprotect the source pages on failure.
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ON_RESULT_FAILURE {
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const KPageProperties unprotect_properties = {
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KMemoryPermission::UserReadWrite, false, false,
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DisableMergeAttribute::EnableHeadBodyTail};
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ASSERT(this->Operate(src_address, num_pages, unprotect_properties.perm,
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OperationType::ChangePermissions) == ResultSuccess);
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};
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block_guard.Cancel();
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}
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// Map the alias pages.
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const KPageProperties dst_map_properties = {KMemoryPermission::UserReadWrite, false, false,
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DisableMergeAttribute::DisableHead};
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R_TRY(this->MapPageGroupImpl(updater.GetPageList(), dst_address, pg, dst_map_properties,
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false));
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// Apply the memory block updates.
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m_memory_block_manager.Update(std::addressof(src_allocator), src_address, num_pages, src_state,
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new_src_perm, new_src_attr,
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m_memory_block_manager.Update(std::addressof(src_allocator), src_address, num_pages,
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src_state, new_src_perm, new_src_attr,
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KMemoryBlockDisableMergeAttribute::Locked,
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KMemoryBlockDisableMergeAttribute::None);
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m_memory_block_manager.Update(std::addressof(dst_allocator), dst_address, num_pages,
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KMemoryState::Stack, KMemoryPermission::UserReadWrite,
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KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
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KMemoryBlockDisableMergeAttribute::None);
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m_memory_block_manager.Update(
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std::addressof(dst_allocator), dst_address, num_pages, KMemoryState::Stack,
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KMemoryPermission::UserReadWrite, KMemoryAttribute::None,
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KMemoryBlockDisableMergeAttribute::Normal, KMemoryBlockDisableMergeAttribute::None);
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}
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R_SUCCEED();
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}
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Result KPageTable::UnmapMemory(VAddr dst_address, VAddr src_address, size_t size) {
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Result KPageTable::UnmapMemory(KProcessAddress dst_address, KProcessAddress src_address,
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size_t size) {
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// Lock the table.
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KScopedLightLock lk(m_general_lock);
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@ -1970,108 +1997,208 @@ Result KPageTable::UnmapMemory(VAddr dst_address, VAddr src_address, size_t size
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KMemoryPermission::None, KMemoryAttribute::All, KMemoryAttribute::None));
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// Create an update allocator for the source.
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Result src_allocator_result{ResultSuccess};
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Result src_allocator_result;
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KMemoryBlockManagerUpdateAllocator src_allocator(std::addressof(src_allocator_result),
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m_memory_block_slab_manager,
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num_src_allocator_blocks);
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R_TRY(src_allocator_result);
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// Create an update allocator for the destination.
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Result dst_allocator_result{ResultSuccess};
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Result dst_allocator_result;
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KMemoryBlockManagerUpdateAllocator dst_allocator(std::addressof(dst_allocator_result),
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m_memory_block_slab_manager,
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num_dst_allocator_blocks);
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R_TRY(dst_allocator_result);
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KPageGroup src_pages{m_kernel, m_block_info_manager};
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KPageGroup dst_pages{m_kernel, m_block_info_manager};
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const size_t num_pages{size / PageSize};
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AddRegionToPages(src_address, num_pages, src_pages);
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AddRegionToPages(dst_address, num_pages, dst_pages);
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R_UNLESS(dst_pages.IsEquivalentTo(src_pages), ResultInvalidMemoryRegion);
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// Unmap the memory.
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{
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auto block_guard = detail::ScopeExit([&] { MapPages(dst_address, dst_pages, dst_perm); });
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// Determine the number of pages being operated on.
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const size_t num_pages = size / PageSize;
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R_TRY(Operate(dst_address, num_pages, KMemoryPermission::None, OperationType::Unmap));
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R_TRY(Operate(src_address, num_pages, KMemoryPermission::UserReadWrite,
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// Create page groups for the memory being unmapped.
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KPageGroup pg{m_kernel, m_block_info_manager};
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// Create the page group representing the destination.
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R_TRY(this->MakePageGroup(pg, dst_address, num_pages));
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// Ensure the page group is the valid for the source.
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R_UNLESS(this->IsValidPageGroup(pg, src_address, num_pages), ResultInvalidMemoryRegion);
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// We're going to perform an update, so create a helper.
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KScopedPageTableUpdater updater(this);
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// Unmap the aliased copy of the pages.
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const KPageProperties dst_unmap_properties = {KMemoryPermission::None, false, false,
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DisableMergeAttribute::None};
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R_TRY(
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this->Operate(dst_address, num_pages, dst_unmap_properties.perm, OperationType::Unmap));
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// Ensure that we re-map the aliased pages on failure.
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ON_RESULT_FAILURE {
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this->RemapPageGroup(updater.GetPageList(), dst_address, size, pg);
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};
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// Try to set the permissions for the source pages back to what they should be.
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const KPageProperties src_properties = {KMemoryPermission::UserReadWrite, false, false,
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DisableMergeAttribute::EnableAndMergeHeadBodyTail};
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R_TRY(this->Operate(src_address, num_pages, src_properties.perm,
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OperationType::ChangePermissions));
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block_guard.Cancel();
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}
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// Apply the memory block updates.
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m_memory_block_manager.Update(std::addressof(src_allocator), src_address, num_pages, src_state,
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m_memory_block_manager.Update(
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std::addressof(src_allocator), src_address, num_pages, src_state,
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KMemoryPermission::UserReadWrite, KMemoryAttribute::None,
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KMemoryBlockDisableMergeAttribute::None,
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KMemoryBlockDisableMergeAttribute::Locked);
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m_memory_block_manager.Update(std::addressof(dst_allocator), dst_address, num_pages,
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KMemoryState::None, KMemoryPermission::None,
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KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::None,
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KMemoryBlockDisableMergeAttribute::Normal);
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KMemoryBlockDisableMergeAttribute::None, KMemoryBlockDisableMergeAttribute::Locked);
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m_memory_block_manager.Update(
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std::addressof(dst_allocator), dst_address, num_pages, KMemoryState::None,
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KMemoryPermission::None, KMemoryAttribute::None,
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KMemoryBlockDisableMergeAttribute::None, KMemoryBlockDisableMergeAttribute::Normal);
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}
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R_SUCCEED();
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}
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Result KPageTable::MapPages(VAddr addr, const KPageGroup& page_linked_list,
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KMemoryPermission perm) {
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Result KPageTable::AllocateAndMapPagesImpl(PageLinkedList* page_list, KProcessAddress address,
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size_t num_pages, KMemoryPermission perm) {
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ASSERT(this->IsLockedByCurrentThread());
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VAddr cur_addr{addr};
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// Create a page group to hold the pages we allocate.
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KPageGroup pg{m_kernel, m_block_info_manager};
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for (const auto& node : page_linked_list) {
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if (const auto result{
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Operate(cur_addr, node.GetNumPages(), perm, OperationType::Map, node.GetAddress())};
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result.IsError()) {
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const size_t num_pages{(addr - cur_addr) / PageSize};
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// Allocate the pages.
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R_TRY(
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m_kernel.MemoryManager().AllocateAndOpen(std::addressof(pg), num_pages, m_allocate_option));
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ASSERT(Operate(addr, num_pages, KMemoryPermission::None, OperationType::Unmap)
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.IsSuccess());
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// Ensure that the page group is closed when we're done working with it.
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SCOPE_EXIT({ pg.Close(); });
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R_RETURN(result);
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// Clear all pages.
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for (const auto& it : pg) {
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std::memset(m_system.DeviceMemory().GetPointer<void>(it.GetAddress()), m_heap_fill_value,
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it.GetSize());
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}
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cur_addr += node.GetNumPages() * PageSize;
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}
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R_SUCCEED();
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}
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Result KPageTable::MapPages(VAddr address, KPageGroup& page_linked_list, KMemoryState state,
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KMemoryPermission perm) {
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// Check that the map is in range.
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const size_t num_pages{page_linked_list.GetNumPages()};
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const size_t size{num_pages * PageSize};
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R_UNLESS(this->CanContain(address, size, state), ResultInvalidCurrentMemory);
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// Lock the table.
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KScopedLightLock lk(m_general_lock);
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// Check the memory state.
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R_TRY(this->CheckMemoryState(address, size, KMemoryState::All, KMemoryState::Free,
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KMemoryPermission::None, KMemoryPermission::None,
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KMemoryAttribute::None, KMemoryAttribute::None));
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// Create an update allocator.
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Result allocator_result{ResultSuccess};
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KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
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m_memory_block_slab_manager);
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// Map the pages.
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R_TRY(MapPages(address, page_linked_list, perm));
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R_RETURN(this->Operate(address, num_pages, pg, OperationType::MapGroup));
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}
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// Update the blocks.
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m_memory_block_manager.Update(std::addressof(allocator), address, num_pages, state, perm,
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KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
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KMemoryBlockDisableMergeAttribute::None);
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Result KPageTable::MapPageGroupImpl(PageLinkedList* page_list, KProcessAddress address,
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const KPageGroup& pg, const KPageProperties properties,
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bool reuse_ll) {
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ASSERT(this->IsLockedByCurrentThread());
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// Note the current address, so that we can iterate.
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const KProcessAddress start_address = address;
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KProcessAddress cur_address = address;
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// Ensure that we clean up on failure.
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ON_RESULT_FAILURE {
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ASSERT(!reuse_ll);
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if (cur_address != start_address) {
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const KPageProperties unmap_properties = {KMemoryPermission::None, false, false,
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DisableMergeAttribute::None};
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ASSERT(this->Operate(start_address, (cur_address - start_address) / PageSize,
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unmap_properties.perm, OperationType::Unmap) == ResultSuccess);
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}
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};
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// Iterate, mapping all pages in the group.
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for (const auto& block : pg) {
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// Map and advance.
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const KPageProperties cur_properties =
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(cur_address == start_address)
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? properties
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: KPageProperties{properties.perm, properties.io, properties.uncached,
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DisableMergeAttribute::None};
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this->Operate(cur_address, block.GetNumPages(), cur_properties.perm, OperationType::Map,
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block.GetAddress());
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cur_address += block.GetSize();
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}
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// We succeeded!
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R_SUCCEED();
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}
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Result KPageTable::MapPages(VAddr* out_addr, size_t num_pages, size_t alignment, PAddr phys_addr,
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bool is_pa_valid, VAddr region_start, size_t region_num_pages,
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void KPageTable::RemapPageGroup(PageLinkedList* page_list, KProcessAddress address, size_t size,
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const KPageGroup& pg) {
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ASSERT(this->IsLockedByCurrentThread());
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// Note the current address, so that we can iterate.
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const KProcessAddress start_address = address;
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const KProcessAddress last_address = start_address + size - 1;
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const KProcessAddress end_address = last_address + 1;
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// Iterate over the memory.
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auto pg_it = pg.begin();
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ASSERT(pg_it != pg.end());
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KPhysicalAddress pg_phys_addr = pg_it->GetAddress();
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size_t pg_pages = pg_it->GetNumPages();
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auto it = m_memory_block_manager.FindIterator(start_address);
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while (true) {
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// Check that the iterator is valid.
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ASSERT(it != m_memory_block_manager.end());
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// Get the memory info.
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const KMemoryInfo info = it->GetMemoryInfo();
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// Determine the range to map.
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KProcessAddress map_address = std::max(info.GetAddress(), start_address);
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const KProcessAddress map_end_address = std::min(info.GetEndAddress(), end_address);
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ASSERT(map_end_address != map_address);
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// Determine if we should disable head merge.
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const bool disable_head_merge =
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info.GetAddress() >= start_address &&
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True(info.GetDisableMergeAttribute() & KMemoryBlockDisableMergeAttribute::Normal);
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const KPageProperties map_properties = {
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info.GetPermission(), false, false,
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disable_head_merge ? DisableMergeAttribute::DisableHead : DisableMergeAttribute::None};
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// While we have pages to map, map them.
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size_t map_pages = (map_end_address - map_address) / PageSize;
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while (map_pages > 0) {
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// Check if we're at the end of the physical block.
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if (pg_pages == 0) {
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// Ensure there are more pages to map.
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ASSERT(pg_it != pg.end());
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// Advance our physical block.
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++pg_it;
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pg_phys_addr = pg_it->GetAddress();
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pg_pages = pg_it->GetNumPages();
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}
|
||||
|
||||
// Map whatever we can.
|
||||
const size_t cur_pages = std::min(pg_pages, map_pages);
|
||||
ASSERT(this->Operate(map_address, map_pages, map_properties.perm, OperationType::Map,
|
||||
pg_phys_addr) == ResultSuccess);
|
||||
|
||||
// Advance.
|
||||
map_address += cur_pages * PageSize;
|
||||
map_pages -= cur_pages;
|
||||
|
||||
pg_phys_addr += cur_pages * PageSize;
|
||||
pg_pages -= cur_pages;
|
||||
}
|
||||
|
||||
// Check if we're done.
|
||||
if (last_address <= info.GetLastAddress()) {
|
||||
break;
|
||||
}
|
||||
|
||||
// Advance.
|
||||
++it;
|
||||
}
|
||||
|
||||
// Check that we re-mapped precisely the page group.
|
||||
ASSERT((++pg_it) == pg.end());
|
||||
}
|
||||
|
||||
Result KPageTable::MapPages(KProcessAddress* out_addr, size_t num_pages, size_t alignment,
|
||||
KPhysicalAddress phys_addr, bool is_pa_valid,
|
||||
KProcessAddress region_start, size_t region_num_pages,
|
||||
KMemoryState state, KMemoryPermission perm) {
|
||||
ASSERT(Common::IsAligned(alignment, PageSize) && alignment >= PageSize);
|
||||
|
||||
|
|
@ -2084,26 +2211,30 @@ Result KPageTable::MapPages(VAddr* out_addr, size_t num_pages, size_t alignment,
|
|||
KScopedLightLock lk(m_general_lock);
|
||||
|
||||
// Find a random address to map at.
|
||||
VAddr addr = this->FindFreeArea(region_start, region_num_pages, num_pages, alignment, 0,
|
||||
this->GetNumGuardPages());
|
||||
KProcessAddress addr = this->FindFreeArea(region_start, region_num_pages, num_pages, alignment,
|
||||
0, this->GetNumGuardPages());
|
||||
R_UNLESS(addr != 0, ResultOutOfMemory);
|
||||
ASSERT(Common::IsAligned(addr, alignment));
|
||||
ASSERT(this->CanContain(addr, num_pages * PageSize, state));
|
||||
ASSERT(this->CheckMemoryState(addr, num_pages * PageSize, KMemoryState::All, KMemoryState::Free,
|
||||
KMemoryPermission::None, KMemoryPermission::None,
|
||||
KMemoryAttribute::None, KMemoryAttribute::None)
|
||||
.IsSuccess());
|
||||
KMemoryAttribute::None, KMemoryAttribute::None) == ResultSuccess);
|
||||
|
||||
// Create an update allocator.
|
||||
Result allocator_result{ResultSuccess};
|
||||
Result allocator_result;
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager);
|
||||
R_TRY(allocator_result);
|
||||
|
||||
// We're going to perform an update, so create a helper.
|
||||
KScopedPageTableUpdater updater(this);
|
||||
|
||||
// Perform mapping operation.
|
||||
if (is_pa_valid) {
|
||||
R_TRY(this->Operate(addr, num_pages, perm, OperationType::Map, phys_addr));
|
||||
const KPageProperties properties = {perm, false, false, DisableMergeAttribute::DisableHead};
|
||||
R_TRY(this->Operate(addr, num_pages, properties.perm, OperationType::Map, phys_addr));
|
||||
} else {
|
||||
UNIMPLEMENTED();
|
||||
R_TRY(this->AllocateAndMapPagesImpl(updater.GetPageList(), addr, num_pages, perm));
|
||||
}
|
||||
|
||||
// Update the blocks.
|
||||
|
|
@ -2116,28 +2247,45 @@ Result KPageTable::MapPages(VAddr* out_addr, size_t num_pages, size_t alignment,
|
|||
R_SUCCEED();
|
||||
}
|
||||
|
||||
Result KPageTable::UnmapPages(VAddr addr, const KPageGroup& page_linked_list) {
|
||||
ASSERT(this->IsLockedByCurrentThread());
|
||||
Result KPageTable::MapPages(KProcessAddress address, size_t num_pages, KMemoryState state,
|
||||
KMemoryPermission perm) {
|
||||
// Check that the map is in range.
|
||||
const size_t size = num_pages * PageSize;
|
||||
R_UNLESS(this->CanContain(address, size, state), ResultInvalidCurrentMemory);
|
||||
|
||||
VAddr cur_addr{addr};
|
||||
// Lock the table.
|
||||
KScopedLightLock lk(m_general_lock);
|
||||
|
||||
for (const auto& node : page_linked_list) {
|
||||
if (const auto result{Operate(cur_addr, node.GetNumPages(), KMemoryPermission::None,
|
||||
OperationType::Unmap)};
|
||||
result.IsError()) {
|
||||
R_RETURN(result);
|
||||
}
|
||||
// Check the memory state.
|
||||
size_t num_allocator_blocks;
|
||||
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), address, size,
|
||||
KMemoryState::All, KMemoryState::Free, KMemoryPermission::None,
|
||||
KMemoryPermission::None, KMemoryAttribute::None,
|
||||
KMemoryAttribute::None));
|
||||
|
||||
cur_addr += node.GetNumPages() * PageSize;
|
||||
}
|
||||
// Create an update allocator.
|
||||
Result allocator_result;
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager, num_allocator_blocks);
|
||||
R_TRY(allocator_result);
|
||||
|
||||
// We're going to perform an update, so create a helper.
|
||||
KScopedPageTableUpdater updater(this);
|
||||
|
||||
// Map the pages.
|
||||
R_TRY(this->AllocateAndMapPagesImpl(updater.GetPageList(), address, num_pages, perm));
|
||||
|
||||
// Update the blocks.
|
||||
m_memory_block_manager.Update(std::addressof(allocator), address, num_pages, state, perm,
|
||||
KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
|
||||
KMemoryBlockDisableMergeAttribute::None);
|
||||
|
||||
R_SUCCEED();
|
||||
}
|
||||
|
||||
Result KPageTable::UnmapPages(VAddr address, KPageGroup& page_linked_list, KMemoryState state) {
|
||||
Result KPageTable::UnmapPages(KProcessAddress address, size_t num_pages, KMemoryState state) {
|
||||
// Check that the unmap is in range.
|
||||
const size_t num_pages{page_linked_list.GetNumPages()};
|
||||
const size_t size{num_pages * PageSize};
|
||||
const size_t size = num_pages * PageSize;
|
||||
R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
|
||||
|
||||
// Lock the table.
|
||||
|
|
@ -2151,13 +2299,18 @@ Result KPageTable::UnmapPages(VAddr address, KPageGroup& page_linked_list, KMemo
|
|||
KMemoryAttribute::None));
|
||||
|
||||
// Create an update allocator.
|
||||
Result allocator_result{ResultSuccess};
|
||||
Result allocator_result;
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager, num_allocator_blocks);
|
||||
R_TRY(allocator_result);
|
||||
|
||||
// We're going to perform an update, so create a helper.
|
||||
KScopedPageTableUpdater updater(this);
|
||||
|
||||
// Perform the unmap.
|
||||
R_TRY(UnmapPages(address, page_linked_list));
|
||||
const KPageProperties unmap_properties = {KMemoryPermission::None, false, false,
|
||||
DisableMergeAttribute::None};
|
||||
R_TRY(this->Operate(address, num_pages, unmap_properties.perm, OperationType::Unmap));
|
||||
|
||||
// Update the blocks.
|
||||
m_memory_block_manager.Update(std::addressof(allocator), address, num_pages, KMemoryState::Free,
|
||||
|
|
@ -2168,29 +2321,130 @@ Result KPageTable::UnmapPages(VAddr address, KPageGroup& page_linked_list, KMemo
|
|||
R_SUCCEED();
|
||||
}
|
||||
|
||||
Result KPageTable::UnmapPages(VAddr address, size_t num_pages, KMemoryState state) {
|
||||
// Check that the unmap is in range.
|
||||
const size_t size = num_pages * PageSize;
|
||||
R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
|
||||
Result KPageTable::MapPageGroup(KProcessAddress* out_addr, const KPageGroup& pg,
|
||||
KProcessAddress region_start, size_t region_num_pages,
|
||||
KMemoryState state, KMemoryPermission perm) {
|
||||
ASSERT(!this->IsLockedByCurrentThread());
|
||||
|
||||
// Ensure this is a valid map request.
|
||||
const size_t num_pages = pg.GetNumPages();
|
||||
R_UNLESS(this->CanContain(region_start, region_num_pages * PageSize, state),
|
||||
ResultInvalidCurrentMemory);
|
||||
R_UNLESS(num_pages < region_num_pages, ResultOutOfMemory);
|
||||
|
||||
// Lock the table.
|
||||
KScopedLightLock lk(m_general_lock);
|
||||
|
||||
// Check the memory state.
|
||||
size_t num_allocator_blocks{};
|
||||
// Find a random address to map at.
|
||||
KProcessAddress addr = this->FindFreeArea(region_start, region_num_pages, num_pages, PageSize,
|
||||
0, this->GetNumGuardPages());
|
||||
R_UNLESS(addr != 0, ResultOutOfMemory);
|
||||
ASSERT(this->CanContain(addr, num_pages * PageSize, state));
|
||||
ASSERT(this->CheckMemoryState(addr, num_pages * PageSize, KMemoryState::All, KMemoryState::Free,
|
||||
KMemoryPermission::None, KMemoryPermission::None,
|
||||
KMemoryAttribute::None, KMemoryAttribute::None) == ResultSuccess);
|
||||
|
||||
// Create an update allocator.
|
||||
Result allocator_result;
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager);
|
||||
R_TRY(allocator_result);
|
||||
|
||||
// We're going to perform an update, so create a helper.
|
||||
KScopedPageTableUpdater updater(this);
|
||||
|
||||
// Perform mapping operation.
|
||||
const KPageProperties properties = {perm, state == KMemoryState::Io, false,
|
||||
DisableMergeAttribute::DisableHead};
|
||||
R_TRY(this->MapPageGroupImpl(updater.GetPageList(), addr, pg, properties, false));
|
||||
|
||||
// Update the blocks.
|
||||
m_memory_block_manager.Update(std::addressof(allocator), addr, num_pages, state, perm,
|
||||
KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
|
||||
KMemoryBlockDisableMergeAttribute::None);
|
||||
|
||||
// We successfully mapped the pages.
|
||||
*out_addr = addr;
|
||||
R_SUCCEED();
|
||||
}
|
||||
|
||||
Result KPageTable::MapPageGroup(KProcessAddress addr, const KPageGroup& pg, KMemoryState state,
|
||||
KMemoryPermission perm) {
|
||||
ASSERT(!this->IsLockedByCurrentThread());
|
||||
|
||||
// Ensure this is a valid map request.
|
||||
const size_t num_pages = pg.GetNumPages();
|
||||
const size_t size = num_pages * PageSize;
|
||||
R_UNLESS(this->CanContain(addr, size, state), ResultInvalidCurrentMemory);
|
||||
|
||||
// Lock the table.
|
||||
KScopedLightLock lk(m_general_lock);
|
||||
|
||||
// Check if state allows us to map.
|
||||
size_t num_allocator_blocks;
|
||||
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), addr, size,
|
||||
KMemoryState::All, KMemoryState::Free, KMemoryPermission::None,
|
||||
KMemoryPermission::None, KMemoryAttribute::None,
|
||||
KMemoryAttribute::None));
|
||||
|
||||
// Create an update allocator.
|
||||
Result allocator_result;
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager, num_allocator_blocks);
|
||||
R_TRY(allocator_result);
|
||||
|
||||
// We're going to perform an update, so create a helper.
|
||||
KScopedPageTableUpdater updater(this);
|
||||
|
||||
// Perform mapping operation.
|
||||
const KPageProperties properties = {perm, state == KMemoryState::Io, false,
|
||||
DisableMergeAttribute::DisableHead};
|
||||
R_TRY(this->MapPageGroupImpl(updater.GetPageList(), addr, pg, properties, false));
|
||||
|
||||
// Update the blocks.
|
||||
m_memory_block_manager.Update(std::addressof(allocator), addr, num_pages, state, perm,
|
||||
KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
|
||||
KMemoryBlockDisableMergeAttribute::None);
|
||||
|
||||
// We successfully mapped the pages.
|
||||
R_SUCCEED();
|
||||
}
|
||||
|
||||
Result KPageTable::UnmapPageGroup(KProcessAddress address, const KPageGroup& pg,
|
||||
KMemoryState state) {
|
||||
ASSERT(!this->IsLockedByCurrentThread());
|
||||
|
||||
// Ensure this is a valid unmap request.
|
||||
const size_t num_pages = pg.GetNumPages();
|
||||
const size_t size = num_pages * PageSize;
|
||||
R_UNLESS(this->CanContain(address, size, state), ResultInvalidCurrentMemory);
|
||||
|
||||
// Lock the table.
|
||||
KScopedLightLock lk(m_general_lock);
|
||||
|
||||
// Check if state allows us to unmap.
|
||||
size_t num_allocator_blocks;
|
||||
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), address, size,
|
||||
KMemoryState::All, state, KMemoryPermission::None,
|
||||
KMemoryPermission::None, KMemoryAttribute::All,
|
||||
KMemoryAttribute::None));
|
||||
|
||||
// Check that the page group is valid.
|
||||
R_UNLESS(this->IsValidPageGroup(pg, address, num_pages), ResultInvalidCurrentMemory);
|
||||
|
||||
// Create an update allocator.
|
||||
Result allocator_result{ResultSuccess};
|
||||
Result allocator_result;
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager, num_allocator_blocks);
|
||||
R_TRY(allocator_result);
|
||||
|
||||
// Perform the unmap.
|
||||
R_TRY(Operate(address, num_pages, KMemoryPermission::None, OperationType::Unmap));
|
||||
// We're going to perform an update, so create a helper.
|
||||
KScopedPageTableUpdater updater(this);
|
||||
|
||||
// Perform unmapping operation.
|
||||
const KPageProperties properties = {KMemoryPermission::None, false, false,
|
||||
DisableMergeAttribute::None};
|
||||
R_TRY(this->Operate(address, num_pages, properties.perm, OperationType::Unmap));
|
||||
|
||||
// Update the blocks.
|
||||
m_memory_block_manager.Update(std::addressof(allocator), address, num_pages, KMemoryState::Free,
|
||||
|
|
@ -2550,54 +2804,6 @@ Result KPageTable::SetHeapSize(VAddr* out, size_t size) {
|
|||
}
|
||||
}
|
||||
|
||||
ResultVal<VAddr> KPageTable::AllocateAndMapMemory(size_t needed_num_pages, size_t align,
|
||||
bool is_map_only, VAddr region_start,
|
||||
size_t region_num_pages, KMemoryState state,
|
||||
KMemoryPermission perm, PAddr map_addr) {
|
||||
KScopedLightLock lk(m_general_lock);
|
||||
|
||||
R_UNLESS(CanContain(region_start, region_num_pages * PageSize, state),
|
||||
ResultInvalidCurrentMemory);
|
||||
R_UNLESS(region_num_pages > needed_num_pages, ResultOutOfMemory);
|
||||
const VAddr addr{
|
||||
AllocateVirtualMemory(region_start, region_num_pages, needed_num_pages, align)};
|
||||
R_UNLESS(addr, ResultOutOfMemory);
|
||||
|
||||
// Create an update allocator.
|
||||
Result allocator_result{ResultSuccess};
|
||||
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
|
||||
m_memory_block_slab_manager);
|
||||
|
||||
if (is_map_only) {
|
||||
R_TRY(Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr));
|
||||
} else {
|
||||
// Create a page group tohold the pages we allocate.
|
||||
KPageGroup pg{m_kernel, m_block_info_manager};
|
||||
|
||||
R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpen(
|
||||
&pg, needed_num_pages,
|
||||
KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option)));
|
||||
|
||||
// Ensure that the page group is closed when we're done working with it.
|
||||
SCOPE_EXIT({ pg.Close(); });
|
||||
|
||||
// Clear all pages.
|
||||
for (const auto& it : pg) {
|
||||
std::memset(m_system.DeviceMemory().GetPointer<void>(it.GetAddress()),
|
||||
m_heap_fill_value, it.GetSize());
|
||||
}
|
||||
|
||||
R_TRY(Operate(addr, needed_num_pages, pg, OperationType::MapGroup));
|
||||
}
|
||||
|
||||
// Update the blocks.
|
||||
m_memory_block_manager.Update(std::addressof(allocator), addr, needed_num_pages, state, perm,
|
||||
KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
|
||||
KMemoryBlockDisableMergeAttribute::None);
|
||||
|
||||
return addr;
|
||||
}
|
||||
|
||||
Result KPageTable::LockForMapDeviceAddressSpace(bool* out_is_io, VAddr address, size_t size,
|
||||
KMemoryPermission perm, bool is_aligned,
|
||||
bool check_heap) {
|
||||
|
|
|
|||
|
|
@ -24,12 +24,36 @@ class System;
|
|||
|
||||
namespace Kernel {
|
||||
|
||||
enum class DisableMergeAttribute : u8 {
|
||||
None = (0U << 0),
|
||||
DisableHead = (1U << 0),
|
||||
DisableHeadAndBody = (1U << 1),
|
||||
EnableHeadAndBody = (1U << 2),
|
||||
DisableTail = (1U << 3),
|
||||
EnableTail = (1U << 4),
|
||||
EnableAndMergeHeadBodyTail = (1U << 5),
|
||||
EnableHeadBodyTail = EnableHeadAndBody | EnableTail,
|
||||
DisableHeadBodyTail = DisableHeadAndBody | DisableTail,
|
||||
};
|
||||
|
||||
struct KPageProperties {
|
||||
KMemoryPermission perm;
|
||||
bool io;
|
||||
bool uncached;
|
||||
DisableMergeAttribute disable_merge_attributes;
|
||||
};
|
||||
static_assert(std::is_trivial_v<KPageProperties>);
|
||||
static_assert(sizeof(KPageProperties) == sizeof(u32));
|
||||
|
||||
class KBlockInfoManager;
|
||||
class KMemoryBlockManager;
|
||||
class KResourceLimit;
|
||||
class KSystemResource;
|
||||
|
||||
class KPageTable final {
|
||||
protected:
|
||||
struct PageLinkedList;
|
||||
|
||||
public:
|
||||
enum class ICacheInvalidationStrategy : u32 { InvalidateRange, InvalidateAll };
|
||||
|
||||
|
|
@ -57,27 +81,12 @@ public:
|
|||
Result UnmapPhysicalMemory(VAddr addr, size_t size);
|
||||
Result MapMemory(VAddr dst_addr, VAddr src_addr, size_t size);
|
||||
Result UnmapMemory(VAddr dst_addr, VAddr src_addr, size_t size);
|
||||
Result MapPages(VAddr addr, KPageGroup& page_linked_list, KMemoryState state,
|
||||
KMemoryPermission perm);
|
||||
Result MapPages(VAddr* out_addr, size_t num_pages, size_t alignment, PAddr phys_addr,
|
||||
KMemoryState state, KMemoryPermission perm) {
|
||||
R_RETURN(this->MapPages(out_addr, num_pages, alignment, phys_addr, true,
|
||||
this->GetRegionAddress(state),
|
||||
this->GetRegionSize(state) / PageSize, state, perm));
|
||||
}
|
||||
Result UnmapPages(VAddr addr, KPageGroup& page_linked_list, KMemoryState state);
|
||||
Result UnmapPages(VAddr address, size_t num_pages, KMemoryState state);
|
||||
Result SetProcessMemoryPermission(VAddr addr, size_t size, Svc::MemoryPermission svc_perm);
|
||||
KMemoryInfo QueryInfo(VAddr addr);
|
||||
Result SetMemoryPermission(VAddr addr, size_t size, Svc::MemoryPermission perm);
|
||||
Result SetMemoryAttribute(VAddr addr, size_t size, u32 mask, u32 attr);
|
||||
Result SetMaxHeapSize(size_t size);
|
||||
Result SetHeapSize(VAddr* out, size_t size);
|
||||
ResultVal<VAddr> AllocateAndMapMemory(size_t needed_num_pages, size_t align, bool is_map_only,
|
||||
VAddr region_start, size_t region_num_pages,
|
||||
KMemoryState state, KMemoryPermission perm,
|
||||
PAddr map_addr = 0);
|
||||
|
||||
Result LockForMapDeviceAddressSpace(bool* out_is_io, VAddr address, size_t size,
|
||||
KMemoryPermission perm, bool is_aligned, bool check_heap);
|
||||
Result LockForUnmapDeviceAddressSpace(VAddr address, size_t size, bool check_heap);
|
||||
|
|
@ -113,6 +122,40 @@ public:
|
|||
|
||||
bool CanContain(VAddr addr, size_t size, KMemoryState state) const;
|
||||
|
||||
Result MapPages(KProcessAddress* out_addr, size_t num_pages, size_t alignment,
|
||||
KPhysicalAddress phys_addr, KProcessAddress region_start,
|
||||
size_t region_num_pages, KMemoryState state, KMemoryPermission perm) {
|
||||
R_RETURN(this->MapPages(out_addr, num_pages, alignment, phys_addr, true, region_start,
|
||||
region_num_pages, state, perm));
|
||||
}
|
||||
|
||||
Result MapPages(KProcessAddress* out_addr, size_t num_pages, size_t alignment,
|
||||
KPhysicalAddress phys_addr, KMemoryState state, KMemoryPermission perm) {
|
||||
R_RETURN(this->MapPages(out_addr, num_pages, alignment, phys_addr, true,
|
||||
this->GetRegionAddress(state),
|
||||
this->GetRegionSize(state) / PageSize, state, perm));
|
||||
}
|
||||
|
||||
Result MapPages(KProcessAddress* out_addr, size_t num_pages, KMemoryState state,
|
||||
KMemoryPermission perm) {
|
||||
R_RETURN(this->MapPages(out_addr, num_pages, PageSize, 0, false,
|
||||
this->GetRegionAddress(state),
|
||||
this->GetRegionSize(state) / PageSize, state, perm));
|
||||
}
|
||||
|
||||
Result MapPages(KProcessAddress address, size_t num_pages, KMemoryState state,
|
||||
KMemoryPermission perm);
|
||||
Result UnmapPages(KProcessAddress address, size_t num_pages, KMemoryState state);
|
||||
|
||||
Result MapPageGroup(KProcessAddress* out_addr, const KPageGroup& pg,
|
||||
KProcessAddress region_start, size_t region_num_pages, KMemoryState state,
|
||||
KMemoryPermission perm);
|
||||
Result MapPageGroup(KProcessAddress address, const KPageGroup& pg, KMemoryState state,
|
||||
KMemoryPermission perm);
|
||||
Result UnmapPageGroup(KProcessAddress address, const KPageGroup& pg, KMemoryState state);
|
||||
void RemapPageGroup(PageLinkedList* page_list, KProcessAddress address, size_t size,
|
||||
const KPageGroup& pg);
|
||||
|
||||
protected:
|
||||
struct PageLinkedList {
|
||||
private:
|
||||
|
|
@ -166,11 +209,9 @@ private:
|
|||
static constexpr KMemoryAttribute DefaultMemoryIgnoreAttr =
|
||||
KMemoryAttribute::IpcLocked | KMemoryAttribute::DeviceShared;
|
||||
|
||||
Result MapPages(VAddr addr, const KPageGroup& page_linked_list, KMemoryPermission perm);
|
||||
Result MapPages(VAddr* out_addr, size_t num_pages, size_t alignment, PAddr phys_addr,
|
||||
bool is_pa_valid, VAddr region_start, size_t region_num_pages,
|
||||
KMemoryState state, KMemoryPermission perm);
|
||||
Result UnmapPages(VAddr addr, const KPageGroup& page_linked_list);
|
||||
Result MapPages(KProcessAddress* out_addr, size_t num_pages, size_t alignment,
|
||||
KPhysicalAddress phys_addr, bool is_pa_valid, KProcessAddress region_start,
|
||||
size_t region_num_pages, KMemoryState state, KMemoryPermission perm);
|
||||
bool IsRegionContiguous(VAddr addr, u64 size) const;
|
||||
void AddRegionToPages(VAddr start, size_t num_pages, KPageGroup& page_linked_list);
|
||||
KMemoryInfo QueryInfoImpl(VAddr addr);
|
||||
|
|
@ -265,6 +306,11 @@ private:
|
|||
void CleanupForIpcClientOnServerSetupFailure(PageLinkedList* page_list, VAddr address,
|
||||
size_t size, KMemoryPermission prot_perm);
|
||||
|
||||
Result AllocateAndMapPagesImpl(PageLinkedList* page_list, KProcessAddress address,
|
||||
size_t num_pages, KMemoryPermission perm);
|
||||
Result MapPageGroupImpl(PageLinkedList* page_list, KProcessAddress address,
|
||||
const KPageGroup& pg, const KPageProperties properties, bool reuse_ll);
|
||||
|
||||
mutable KLightLock m_general_lock;
|
||||
mutable KLightLock m_map_physical_memory_lock;
|
||||
|
||||
|
|
|
|||
|
|
@ -417,9 +417,8 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
|
|||
}
|
||||
|
||||
void KProcess::Run(s32 main_thread_priority, u64 stack_size) {
|
||||
AllocateMainThreadStack(stack_size);
|
||||
ASSERT(AllocateMainThreadStack(stack_size) == ResultSuccess);
|
||||
resource_limit->Reserve(LimitableResource::ThreadCountMax, 1);
|
||||
resource_limit->Reserve(LimitableResource::PhysicalMemoryMax, main_thread_stack_size);
|
||||
|
||||
const std::size_t heap_capacity{memory_usage_capacity - (main_thread_stack_size + image_size)};
|
||||
ASSERT(!page_table.SetMaxHeapSize(heap_capacity).IsError());
|
||||
|
|
@ -675,20 +674,31 @@ void KProcess::ChangeState(State new_state) {
|
|||
}
|
||||
|
||||
Result KProcess::AllocateMainThreadStack(std::size_t stack_size) {
|
||||
ASSERT(stack_size);
|
||||
// Ensure that we haven't already allocated stack.
|
||||
ASSERT(main_thread_stack_size == 0);
|
||||
|
||||
// The kernel always ensures that the given stack size is page aligned.
|
||||
main_thread_stack_size = Common::AlignUp(stack_size, PageSize);
|
||||
// Ensure that we're allocating a valid stack.
|
||||
stack_size = Common::AlignUp(stack_size, PageSize);
|
||||
// R_UNLESS(stack_size + image_size <= m_max_process_memory, ResultOutOfMemory);
|
||||
R_UNLESS(stack_size + image_size >= image_size, ResultOutOfMemory);
|
||||
|
||||
const VAddr start{page_table.GetStackRegionStart()};
|
||||
const std::size_t size{page_table.GetStackRegionEnd() - start};
|
||||
// Place a tentative reservation of memory for our new stack.
|
||||
KScopedResourceReservation mem_reservation(this, Svc::LimitableResource::PhysicalMemoryMax,
|
||||
stack_size);
|
||||
R_UNLESS(mem_reservation.Succeeded(), ResultLimitReached);
|
||||
|
||||
CASCADE_RESULT(main_thread_stack_top,
|
||||
page_table.AllocateAndMapMemory(
|
||||
main_thread_stack_size / PageSize, PageSize, false, start, size / PageSize,
|
||||
// Allocate and map our stack.
|
||||
if (stack_size) {
|
||||
KProcessAddress stack_bottom;
|
||||
R_TRY(page_table.MapPages(std::addressof(stack_bottom), stack_size / PageSize,
|
||||
KMemoryState::Stack, KMemoryPermission::UserReadWrite));
|
||||
|
||||
main_thread_stack_top += main_thread_stack_size;
|
||||
main_thread_stack_top = stack_bottom + stack_size;
|
||||
main_thread_stack_size = stack_size;
|
||||
}
|
||||
|
||||
// We succeeded! Commit our memory reservation.
|
||||
mem_reservation.Commit();
|
||||
|
||||
R_SUCCEED();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -94,7 +94,7 @@ Result KSharedMemory::Map(KProcess& target_process, VAddr address, std::size_t m
|
|||
R_UNLESS(map_perm == test_perm, ResultInvalidNewMemoryPermission);
|
||||
}
|
||||
|
||||
return target_process.PageTable().MapPages(address, *page_group, KMemoryState::Shared,
|
||||
return target_process.PageTable().MapPageGroup(address, *page_group, KMemoryState::Shared,
|
||||
ConvertToKMemoryPermission(map_perm));
|
||||
}
|
||||
|
||||
|
|
@ -102,7 +102,7 @@ Result KSharedMemory::Unmap(KProcess& target_process, VAddr address, std::size_t
|
|||
// Validate the size.
|
||||
R_UNLESS(size == unmap_size, ResultInvalidSize);
|
||||
|
||||
return target_process.PageTable().UnmapPages(address, *page_group, KMemoryState::Shared);
|
||||
return target_process.PageTable().UnmapPageGroup(address, *page_group, KMemoryState::Shared);
|
||||
}
|
||||
|
||||
} // namespace Kernel
|
||||
|
|
|
|||
|
|
@ -1492,7 +1492,7 @@ static Result MapProcessMemory(Core::System& system, VAddr dst_address, Handle p
|
|||
KMemoryAttribute::All, KMemoryAttribute::None));
|
||||
|
||||
// Map the group.
|
||||
R_TRY(dst_pt.MapPages(dst_address, pg, KMemoryState::SharedCode,
|
||||
R_TRY(dst_pt.MapPageGroup(dst_address, pg, KMemoryState::SharedCode,
|
||||
KMemoryPermission::UserReadWrite));
|
||||
|
||||
return ResultSuccess;
|
||||
|
|
|
|||
Reference in New Issue