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kern: Implement new PageTable operations/PhysicalMemory reference semantics

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Michael Scire 2022-10-11 22:37:43 -07:00 • committed by SciresM
parent 5ee7d8a5ed
commit 7f2cbba543
8 changed files with 91 additions and 155 deletions
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20
libraries/libmesosphere/source/kern_k_memory_manager.cpp
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@ -308,7 +308,7 @@ namespace ams::kern {
R_SUCCEED();
}
Result KMemoryManager::AllocateAndOpenForProcess(KPageGroup *out, size_t num_pages, u32 option, u64 process_id, u8 fill_pattern) {
Result KMemoryManager::AllocateForProcess(KPageGroup *out, size_t num_pages, u32 option, u64 process_id, u8 fill_pattern) {
MESOSPHERE_ASSERT(out != nullptr);
MESOSPHERE_ASSERT(out->GetNumPages() == 0);
@ -330,24 +330,6 @@ namespace ams::kern {
/* Set whether we should optimize. */
optimized = has_optimized && is_optimized;
/* Open the first reference to the pages. */
for (const auto &block : *out) {
KPhysicalAddress cur_address = block.GetAddress();
size_t remaining_pages = block.GetNumPages();
while (remaining_pages > 0) {
/* Get the manager for the current address. */
auto &manager = this->GetManager(cur_address);
/* Process part or all of the block. */
const size_t cur_pages = std::min(remaining_pages, manager.GetPageOffsetToEnd(cur_address));
manager.OpenFirst(cur_address, cur_pages);
/* Advance. */
cur_address += cur_pages * PageSize;
remaining_pages -= cur_pages;
}
}
}
/* Perform optimized memory tracking, if we should. */