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authorbunnei <bunneidev@gmail.com>2023-01-26 07:27:48 +0100
committerGitHub <noreply@github.com>2023-01-26 07:27:48 +0100
commit2158ccda3b52d53b7485b954dc878735a58de085 (patch)
treefabf49d31ba3ee3f19cb84da7236ab36fced2be5 /src
parentMerge pull request #9681 from Morph1984/nice-one-qt6 (diff)
parentkernel: KPageTable: update (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/core/hle/kernel/k_code_memory.cpp12
-rw-r--r--src/core/hle/kernel/k_page_table.cpp544
-rw-r--r--src/core/hle/kernel/k_page_table.h86
-rw-r--r--src/core/hle/kernel/k_process.cpp40
-rw-r--r--src/core/hle/kernel/k_shared_memory.cpp6
-rw-r--r--src/core/hle/kernel/svc.cpp4
6 files changed, 477 insertions, 215 deletions
diff --git a/src/core/hle/kernel/k_code_memory.cpp b/src/core/hle/kernel/k_code_memory.cpp
index d9da1e600..884eba001 100644
--- a/src/core/hle/kernel/k_code_memory.cpp
+++ b/src/core/hle/kernel/k_code_memory.cpp
@@ -74,7 +74,7 @@ Result KCodeMemory::Map(VAddr address, size_t size) {
R_UNLESS(!m_is_mapped, ResultInvalidState);
// Map the memory.
- R_TRY(kernel.CurrentProcess()->PageTable().MapPages(
+ R_TRY(kernel.CurrentProcess()->PageTable().MapPageGroup(
address, *m_page_group, KMemoryState::CodeOut, KMemoryPermission::UserReadWrite));
// Mark ourselves as mapped.
@@ -91,8 +91,8 @@ Result KCodeMemory::Unmap(VAddr address, size_t size) {
KScopedLightLock lk(m_lock);
// Unmap the memory.
- R_TRY(kernel.CurrentProcess()->PageTable().UnmapPages(address, *m_page_group,
- KMemoryState::CodeOut));
+ R_TRY(kernel.CurrentProcess()->PageTable().UnmapPageGroup(address, *m_page_group,
+ KMemoryState::CodeOut));
// Mark ourselves as unmapped.
m_is_mapped = false;
@@ -125,8 +125,8 @@ Result KCodeMemory::MapToOwner(VAddr address, size_t size, Svc::MemoryPermission
}
// Map the memory.
- R_TRY(
- m_owner->PageTable().MapPages(address, *m_page_group, KMemoryState::GeneratedCode, k_perm));
+ R_TRY(m_owner->PageTable().MapPageGroup(address, *m_page_group, KMemoryState::GeneratedCode,
+ k_perm));
// Mark ourselves as mapped.
m_is_owner_mapped = true;
@@ -142,7 +142,7 @@ Result KCodeMemory::UnmapFromOwner(VAddr address, size_t size) {
KScopedLightLock lk(m_lock);
// Unmap the memory.
- R_TRY(m_owner->PageTable().UnmapPages(address, *m_page_group, KMemoryState::GeneratedCode));
+ R_TRY(m_owner->PageTable().UnmapPageGroup(address, *m_page_group, KMemoryState::GeneratedCode));
// Mark ourselves as unmapped.
m_is_owner_mapped = false;
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp
index 9c7ac22dc..fbd28f5f3 100644
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -435,6 +435,9 @@ Result KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, size_t si
KPageGroup pg{m_kernel, m_block_info_manager};
AddRegionToPages(src_address, num_pages, pg);
+ // We're going to perform an update, so create a helper.
+ KScopedPageTableUpdater updater(this);
+
// Reprotect the source as kernel-read/not mapped.
const auto new_perm = static_cast<KMemoryPermission>(KMemoryPermission::KernelRead |
KMemoryPermission::NotMapped);
@@ -447,7 +450,10 @@ Result KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, size_t si
});
// Map the alias pages.
- R_TRY(MapPages(dst_address, pg, new_perm));
+ const KPageProperties dst_properties = {new_perm, false, false,
+ DisableMergeAttribute::DisableHead};
+ R_TRY(
+ this->MapPageGroupImpl(updater.GetPageList(), dst_address, pg, dst_properties, false));
// We successfully mapped the alias pages, so we don't need to unprotect the src pages on
// failure.
@@ -1881,7 +1887,8 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
R_SUCCEED();
}
-Result KPageTable::MapMemory(VAddr dst_address, VAddr src_address, size_t size) {
+Result KPageTable::MapMemory(KProcessAddress dst_address, KProcessAddress src_address,
+ size_t size) {
// Lock the table.
KScopedLightLock lk(m_general_lock);
@@ -1902,53 +1909,73 @@ Result KPageTable::MapMemory(VAddr dst_address, VAddr src_address, size_t size)
KMemoryAttribute::None));
// Create an update allocator for the source.
- Result src_allocator_result{ResultSuccess};
+ Result src_allocator_result;
KMemoryBlockManagerUpdateAllocator src_allocator(std::addressof(src_allocator_result),
m_memory_block_slab_manager,
num_src_allocator_blocks);
R_TRY(src_allocator_result);
// Create an update allocator for the destination.
- Result dst_allocator_result{ResultSuccess};
+ Result dst_allocator_result;
KMemoryBlockManagerUpdateAllocator dst_allocator(std::addressof(dst_allocator_result),
m_memory_block_slab_manager,
num_dst_allocator_blocks);
R_TRY(dst_allocator_result);
// Map the memory.
- KPageGroup page_linked_list{m_kernel, m_block_info_manager};
- const size_t num_pages{size / PageSize};
- const KMemoryPermission new_src_perm = static_cast<KMemoryPermission>(
- KMemoryPermission::KernelRead | KMemoryPermission::NotMapped);
- const KMemoryAttribute new_src_attr = KMemoryAttribute::Locked;
-
- AddRegionToPages(src_address, num_pages, page_linked_list);
{
+ // Determine the number of pages being operated on.
+ const size_t num_pages = size / PageSize;
+
+ // Create page groups for the memory being unmapped.
+ KPageGroup pg{m_kernel, m_block_info_manager};
+
+ // Create the page group representing the source.
+ R_TRY(this->MakePageGroup(pg, src_address, num_pages));
+
+ // We're going to perform an update, so create a helper.
+ KScopedPageTableUpdater updater(this);
+
// Reprotect the source as kernel-read/not mapped.
- auto block_guard = detail::ScopeExit([&] {
- Operate(src_address, num_pages, KMemoryPermission::UserReadWrite,
- OperationType::ChangePermissions);
- });
- R_TRY(Operate(src_address, num_pages, new_src_perm, OperationType::ChangePermissions));
- R_TRY(MapPages(dst_address, page_linked_list, KMemoryPermission::UserReadWrite));
+ const KMemoryPermission new_src_perm = static_cast<KMemoryPermission>(
+ KMemoryPermission::KernelRead | KMemoryPermission::NotMapped);
+ const KMemoryAttribute new_src_attr = KMemoryAttribute::Locked;
+ const KPageProperties src_properties = {new_src_perm, false, false,
+ DisableMergeAttribute::DisableHeadBodyTail};
+ R_TRY(this->Operate(src_address, num_pages, src_properties.perm,
+ OperationType::ChangePermissions));
- block_guard.Cancel();
- }
+ // Ensure that we unprotect the source pages on failure.
+ ON_RESULT_FAILURE {
+ const KPageProperties unprotect_properties = {
+ KMemoryPermission::UserReadWrite, false, false,
+ DisableMergeAttribute::EnableHeadBodyTail};
+ ASSERT(this->Operate(src_address, num_pages, unprotect_properties.perm,
+ OperationType::ChangePermissions) == ResultSuccess);
+ };
- // Apply the memory block updates.
- m_memory_block_manager.Update(std::addressof(src_allocator), src_address, num_pages, src_state,
- new_src_perm, new_src_attr,
- KMemoryBlockDisableMergeAttribute::Locked,
- KMemoryBlockDisableMergeAttribute::None);
- m_memory_block_manager.Update(std::addressof(dst_allocator), dst_address, num_pages,
- KMemoryState::Stack, KMemoryPermission::UserReadWrite,
- KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
- KMemoryBlockDisableMergeAttribute::None);
+ // Map the alias pages.
+ const KPageProperties dst_map_properties = {KMemoryPermission::UserReadWrite, false, false,
+ DisableMergeAttribute::DisableHead};
+ R_TRY(this->MapPageGroupImpl(updater.GetPageList(), dst_address, pg, dst_map_properties,
+ false));
+
+ // Apply the memory block updates.
+ m_memory_block_manager.Update(std::addressof(src_allocator), src_address, num_pages,
+ src_state, new_src_perm, new_src_attr,
+ KMemoryBlockDisableMergeAttribute::Locked,
+ KMemoryBlockDisableMergeAttribute::None);
+ m_memory_block_manager.Update(
+ std::addressof(dst_allocator), dst_address, num_pages, KMemoryState::Stack,
+ KMemoryPermission::UserReadWrite, KMemoryAttribute::None,
+ KMemoryBlockDisableMergeAttribute::Normal, KMemoryBlockDisableMergeAttribute::None);
+ }
R_SUCCEED();
}
-Result KPageTable::UnmapMemory(VAddr dst_address, VAddr src_address, size_t size) {
+Result KPageTable::UnmapMemory(KProcessAddress dst_address, KProcessAddress src_address,
+ size_t size) {
// Lock the table.
KScopedLightLock lk(m_general_lock);
@@ -1970,108 +1997,208 @@ Result KPageTable::UnmapMemory(VAddr dst_address, VAddr src_address, size_t size
KMemoryPermission::None, KMemoryAttribute::All, KMemoryAttribute::None));
// Create an update allocator for the source.
- Result src_allocator_result{ResultSuccess};
+ Result src_allocator_result;
KMemoryBlockManagerUpdateAllocator src_allocator(std::addressof(src_allocator_result),
m_memory_block_slab_manager,
num_src_allocator_blocks);
R_TRY(src_allocator_result);
// Create an update allocator for the destination.
- Result dst_allocator_result{ResultSuccess};
+ Result dst_allocator_result;
KMemoryBlockManagerUpdateAllocator dst_allocator(std::addressof(dst_allocator_result),
m_memory_block_slab_manager,
num_dst_allocator_blocks);
R_TRY(dst_allocator_result);
- KPageGroup src_pages{m_kernel, m_block_info_manager};
- KPageGroup dst_pages{m_kernel, m_block_info_manager};
- const size_t num_pages{size / PageSize};
+ // Unmap the memory.
+ {
+ // Determine the number of pages being operated on.
+ const size_t num_pages = size / PageSize;
- AddRegionToPages(src_address, num_pages, src_pages);
- AddRegionToPages(dst_address, num_pages, dst_pages);
+ // Create page groups for the memory being unmapped.
+ KPageGroup pg{m_kernel, m_block_info_manager};
- R_UNLESS(dst_pages.IsEquivalentTo(src_pages), ResultInvalidMemoryRegion);
+ // Create the page group representing the destination.
+ R_TRY(this->MakePageGroup(pg, dst_address, num_pages));
- {
- auto block_guard = detail::ScopeExit([&] { MapPages(dst_address, dst_pages, dst_perm); });
+ // Ensure the page group is the valid for the source.
+ R_UNLESS(this->IsValidPageGroup(pg, src_address, num_pages), ResultInvalidMemoryRegion);
- R_TRY(Operate(dst_address, num_pages, KMemoryPermission::None, OperationType::Unmap));
- R_TRY(Operate(src_address, num_pages, KMemoryPermission::UserReadWrite,
- OperationType::ChangePermissions));
+ // We're going to perform an update, so create a helper.
+ KScopedPageTableUpdater updater(this);
- block_guard.Cancel();
- }
+ // Unmap the aliased copy of the pages.
+ const KPageProperties dst_unmap_properties = {KMemoryPermission::None, false, false,
+ DisableMergeAttribute::None};
+ R_TRY(
+ this->Operate(dst_address, num_pages, dst_unmap_properties.perm, OperationType::Unmap));
+
+ // Ensure that we re-map the aliased pages on failure.
+ ON_RESULT_FAILURE {
+ this->RemapPageGroup(updater.GetPageList(), dst_address, size, pg);
+ };
- // Apply the memory block updates.
- m_memory_block_manager.Update(std::addressof(src_allocator), src_address, num_pages, src_state,
- KMemoryPermission::UserReadWrite, KMemoryAttribute::None,
- KMemoryBlockDisableMergeAttribute::None,
- KMemoryBlockDisableMergeAttribute::Locked);
- m_memory_block_manager.Update(std::addressof(dst_allocator), dst_address, num_pages,
- KMemoryState::None, KMemoryPermission::None,
- KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::None,
- KMemoryBlockDisableMergeAttribute::Normal);
+ // Try to set the permissions for the source pages back to what they should be.
+ const KPageProperties src_properties = {KMemoryPermission::UserReadWrite, false, false,
+ DisableMergeAttribute::EnableAndMergeHeadBodyTail};
+ R_TRY(this->Operate(src_address, num_pages, src_properties.perm,
+ OperationType::ChangePermissions));
+
+ // Apply the memory block updates.
+ m_memory_block_manager.Update(
+ std::addressof(src_allocator), src_address, num_pages, src_state,
+ KMemoryPermission::UserReadWrite, KMemoryAttribute::None,
+ KMemoryBlockDisableMergeAttribute::None, KMemoryBlockDisableMergeAttribute::Locked);
+ m_memory_block_manager.Update(
+ std::addressof(dst_allocator), dst_address, num_pages, KMemoryState::None,
+ KMemoryPermission::None, KMemoryAttribute::None,
+ KMemoryBlockDisableMergeAttribute::None, KMemoryBlockDisableMergeAttribute::Normal);
+ }
R_SUCCEED();
}
-Result KPageTable::MapPages(VAddr addr, const KPageGroup& page_linked_list,
- KMemoryPermission perm) {
+Result KPageTable::AllocateAndMapPagesImpl(PageLinkedList* page_list, KProcessAddress address,
+ size_t num_pages, KMemoryPermission perm) {
ASSERT(this->IsLockedByCurrentThread());
- VAddr cur_addr{addr};
+ // Create a page group to hold the pages we allocate.
+ KPageGroup pg{m_kernel, m_block_info_manager};
- for (const auto& node : page_linked_list) {
- if (const auto result{
- Operate(cur_addr, node.GetNumPages(), perm, OperationType::Map, node.GetAddress())};
- result.IsError()) {
- const size_t num_pages{(addr - cur_addr) / PageSize};
+ // Allocate the pages.
+ R_TRY(
+ m_kernel.MemoryManager().AllocateAndOpen(std::addressof(pg), num_pages, m_allocate_option));
- ASSERT(Operate(addr, num_pages, KMemoryPermission::None, OperationType::Unmap)
- .IsSuccess());
+ // Ensure that the page group is closed when we're done working with it.
+ SCOPE_EXIT({ pg.Close(); });
- R_RETURN(result);
+ // Clear all pages.
+ for (const auto& it : pg) {
+ std::memset(m_system.DeviceMemory().GetPointer<void>(it.GetAddress()), m_heap_fill_value,
+ it.GetSize());
+ }
+
+ // Map the pages.
+ R_RETURN(this->Operate(address, num_pages, pg, OperationType::MapGroup));
+}
+
+Result KPageTable::MapPageGroupImpl(PageLinkedList* page_list, KProcessAddress address,
+ const KPageGroup& pg, const KPageProperties properties,
+ bool reuse_ll) {
+ ASSERT(this->IsLockedByCurrentThread());
+
+ // Note the current address, so that we can iterate.
+ const KProcessAddress start_address = address;
+ KProcessAddress cur_address = address;
+
+ // Ensure that we clean up on failure.
+ ON_RESULT_FAILURE {
+ ASSERT(!reuse_ll);
+ if (cur_address != start_address) {
+ const KPageProperties unmap_properties = {KMemoryPermission::None, false, false,
+ DisableMergeAttribute::None};
+ ASSERT(this->Operate(start_address, (cur_address - start_address) / PageSize,
+ unmap_properties.perm, OperationType::Unmap) == ResultSuccess);
}
+ };
- cur_addr += node.GetNumPages() * PageSize;
+ // Iterate, mapping all pages in the group.
+ for (const auto& block : pg) {
+ // Map and advance.
+ const KPageProperties cur_properties =
+ (cur_address == start_address)
+ ? properties
+ : KPageProperties{properties.perm, properties.io, properties.uncached,
+ DisableMergeAttribute::None};
+ this->Operate(cur_address, block.GetNumPages(), cur_properties.perm, OperationType::Map,
+ block.GetAddress());
+ cur_address += block.GetSize();
}
+ // We succeeded!
R_SUCCEED();
}
-Result KPageTable::MapPages(VAddr address, KPageGroup& page_linked_list, KMemoryState state,
- KMemoryPermission perm) {
- // Check that the map is in range.
- const size_t num_pages{page_linked_list.GetNumPages()};
- const size_t size{num_pages * PageSize};
- R_UNLESS(this->CanContain(address, size, state), ResultInvalidCurrentMemory);
+void KPageTable::RemapPageGroup(PageLinkedList* page_list, KProcessAddress address, size_t size,
+ const KPageGroup& pg) {
+ ASSERT(this->IsLockedByCurrentThread());
- // Lock the table.
- KScopedLightLock lk(m_general_lock);
+ // Note the current address, so that we can iterate.
+ const KProcessAddress start_address = address;
+ const KProcessAddress last_address = start_address + size - 1;
+ const KProcessAddress end_address = last_address + 1;
- // Check the memory state.
- R_TRY(this->CheckMemoryState(address, size, KMemoryState::All, KMemoryState::Free,
- KMemoryPermission::None, KMemoryPermission::None,
- KMemoryAttribute::None, KMemoryAttribute::None));
+ // Iterate over the memory.
+ auto pg_it = pg.begin();
+ ASSERT(pg_it != pg.end());
- // Create an update allocator.
- Result allocator_result{ResultSuccess};
- KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
- m_memory_block_slab_manager);
+ KPhysicalAddress pg_phys_addr = pg_it->GetAddress();
+ size_t pg_pages = pg_it->GetNumPages();
- // Map the pages.
- R_TRY(MapPages(address, page_linked_list, perm));
+ auto it = m_memory_block_manager.FindIterator(start_address);
+ while (true) {
+ // Check that the iterator is valid.
+ ASSERT(it != m_memory_block_manager.end());
- // Update the blocks.
- m_memory_block_manager.Update(std::addressof(allocator), address, num_pages, state, perm,
- KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::Normal,
- KMemoryBlockDisableMergeAttribute::None);
+ // Get the memory info.
+ const KMemoryInfo info = it->GetMemoryInfo();
- R_SUCCEED();
+ // Determine the range to map.
+ KProcessAddress map_address = std::max(info.GetAddress(), start_address);
+ const KProcessAddress map_end_address = std::min(info.GetEndAddress(), end_address);
+ ASSERT(map_end_address != map_address);
+
+ // Determine if we should disable head merge.
+ const bool disable_head_merge =
+ info.GetAddress() >= start_address &&
+ True(info.GetDisableMergeAttribute() & KMemoryBlockDisableMergeAttribute::Normal);
+ const KPageProperties map_properties = {
+ info.GetPermission(), false, false,
+ disable_head_merge ? DisableMergeAttribute::DisableHead : DisableMergeAttribute::None};
+
+ // While we have pages to map, map them.
+ size_t map_pages = (map_end_address - map_address) / PageSize;
+ while (map_pages > 0) {
+ // Check if we're at the end of the physical block.
+ if (pg_pages == 0) {
+ // Ensure there are more pages to map.
+ ASSERT(pg_it != pg.end());
+
+ // Advance our physical block.
+ ++pg_it;
+ pg_phys_addr = pg_it->GetAddress();
+ pg_pages = pg_it->GetNumPages();
+ }
+
+ // 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(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,
+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.
+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);
+
+ // 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->Contains(address, size), ResultInvalidCurrentMemory);
+ R_UNLESS(this->CanContain(addr, size, state), ResultInvalidCurrentMemory);
// Lock the table.
KScopedLightLock lk(m_general_lock);
- // Check the memory state.
- size_t num_allocator_blocks{};
+ // 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) {
diff --git a/src/core/hle/kernel/k_page_table.h b/src/core/hle/kernel/k_page_table.h
index 0a454b05b..367dab613 100644
--- a/src/core/hle/kernel/k_page_table.h
+++ b/src/core/hle/kernel/k_page_table.h
@@ -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;
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index a1abf5d68..e201bb0cd 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -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);
-
- // The kernel always ensures that the given stack size is page aligned.
- main_thread_stack_size = Common::AlignUp(stack_size, PageSize);
-
- const VAddr start{page_table.GetStackRegionStart()};
- const std::size_t size{page_table.GetStackRegionEnd() - start};
-
- CASCADE_RESULT(main_thread_stack_top,
- page_table.AllocateAndMapMemory(
- main_thread_stack_size / PageSize, PageSize, false, start, size / PageSize,
- KMemoryState::Stack, KMemoryPermission::UserReadWrite));
+ // Ensure that we haven't already allocated stack.
+ ASSERT(main_thread_stack_size == 0);
+
+ // 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);
+
+ // 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);
+
+ // 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 = stack_bottom + stack_size;
+ main_thread_stack_size = stack_size;
+ }
- main_thread_stack_top += main_thread_stack_size;
+ // We succeeded! Commit our memory reservation.
+ mem_reservation.Commit();
R_SUCCEED();
}
diff --git a/src/core/hle/kernel/k_shared_memory.cpp b/src/core/hle/kernel/k_shared_memory.cpp
index 3cf2b5d91..df505edfe 100644
--- a/src/core/hle/kernel/k_shared_memory.cpp
+++ b/src/core/hle/kernel/k_shared_memory.cpp
@@ -94,15 +94,15 @@ 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,
- ConvertToKMemoryPermission(map_perm));
+ return target_process.PageTable().MapPageGroup(address, *page_group, KMemoryState::Shared,
+ ConvertToKMemoryPermission(map_perm));
}
Result KSharedMemory::Unmap(KProcess& target_process, VAddr address, std::size_t unmap_size) {
// 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
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index aca442196..67fa5d71c 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -1492,8 +1492,8 @@ 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,
- KMemoryPermission::UserReadWrite));
+ R_TRY(dst_pt.MapPageGroup(dst_address, pg, KMemoryState::SharedCode,
+ KMemoryPermission::UserReadWrite));
return ResultSuccess;
}