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Code Issues Releases Activity

core: hle: kernel: KPageTable: Various improvements to MapPages and UnmapPages.

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This commit is contained in:
bunnei 2022-01-15 00:15:58 -08:00
parent 07add23251
commit e791da9791
1 changed files with 25 additions and 22 deletions
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47
src/core/hle/kernel/k_page_table.cpp
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@ -642,24 +642,26 @@ ResultCode KPageTable::MapPages(VAddr addr, const KPageLinkedList& page_linked_l
return ResultSuccess;
}
ResultCode KPageTable::MapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state,
KMemoryPermission perm) {
std::lock_guard lock{page_table_lock};
ResultCode KPageTable::MapPages(VAddr address, KPageLinkedList& page_linked_list,
KMemoryState state, KMemoryPermission perm) {
// Check that the map is in range.
const std::size_t num_pages{page_linked_list.GetNumPages()};
const std::size_t size{num_pages * PageSize};
R_UNLESS(this->CanContain(address, size, state), ResultInvalidCurrentMemory);
if (!CanContain(addr, size, state)) {
return ResultInvalidCurrentMemory;
}
// Lock the table.
std::lock_guard lock{page_table_lock};
if (IsRegionMapped(addr, num_pages * PageSize)) {
return ResultInvalidCurrentMemory;
}
// Check the memory state.
R_TRY(this->CheckMemoryState(address, size, KMemoryState::All, KMemoryState::Free,
KMemoryPermission::None, KMemoryPermission::None,
KMemoryAttribute::None, KMemoryAttribute::None));
CASCADE_CODE(MapPages(addr, page_linked_list, perm));
// Map the pages.
R_TRY(MapPages(address, page_linked_list, perm));
block_manager->Update(addr, num_pages, state, perm);
// Update the blocks.
block_manager->Update(address, num_pages, state, perm);
return ResultSuccess;
}
@ -683,21 +685,23 @@ ResultCode KPageTable::UnmapPages(VAddr addr, const KPageLinkedList& page_linked
ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
KMemoryState state) {
std::lock_guard lock{page_table_lock};
// Check that the unmap is in range.
const std::size_t num_pages{page_linked_list.GetNumPages()};
const std::size_t size{num_pages * PageSize};
R_UNLESS(this->Contains(addr, size), ResultInvalidCurrentMemory);
if (!CanContain(addr, size, state)) {
return ResultInvalidCurrentMemory;
}
// Lock the table.
std::lock_guard lock{page_table_lock};
if (IsRegionMapped(addr, num_pages * PageSize)) {
return ResultInvalidCurrentMemory;
}
// Check the memory state.
R_TRY(this->CheckMemoryState(addr, size, KMemoryState::All, state, KMemoryPermission::None,
KMemoryPermission::None, KMemoryAttribute::All,
KMemoryAttribute::None));
CASCADE_CODE(UnmapPages(addr, page_linked_list));
// Perform the unmap.
R_TRY(UnmapPages(addr, page_linked_list));
// Update the blocks.
block_manager->Update(addr, num_pages, state, KMemoryPermission::None);
return ResultSuccess;
@ -755,7 +759,6 @@ ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
// Ensure cache coherency, if we're setting pages as executable.
if (is_x) {
// Memory execution state is changing, invalidate CPU cache range
system.InvalidateCpuInstructionCacheRange(addr, size);
}