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fixup! core: hle: kernel: KPageTable: Improve Un/MapPhysicalMemory.

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This commit is contained in:
bunnei 2022-02-19 00:14:27 -08:00
parent 1a16d055df
commit 92b2e92620
3 changed files with 18 additions and 38 deletions
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28
src/common/page_table.cpp
View file

@ -10,12 +10,12 @@ PageTable::PageTable() = default;
PageTable::~PageTable() noexcept = default;
bool PageTable::BeginTraversal(TraversalEntry* out_entry, TraversalContext* out_context,
bool PageTable::BeginTraversal(TraversalEntry& out_entry, TraversalContext& out_context,
u64 address) const {
// Setup invalid defaults.
out_entry->phys_addr = 0;
out_entry->block_size = page_size;
out_context->next_page = 0;
out_entry.phys_addr = 0;
out_entry.block_size = page_size;
out_context.next_page = 0;
// Validate that we can read the actual entry.
const auto page = address / page_size;
@ -30,20 +30,20 @@ bool PageTable::BeginTraversal(TraversalEntry* out_entry, TraversalContext* out_
}
// Populate the results.
out_entry->phys_addr = phys_addr + address;
out_context->next_page = page + 1;
out_context->next_offset = address + page_size;
out_entry.phys_addr = phys_addr + address;
out_context.next_page = page + 1;
out_context.next_offset = address + page_size;
return true;
}
bool PageTable::ContinueTraversal(TraversalEntry* out_entry, TraversalContext* context) const {
bool PageTable::ContinueTraversal(TraversalEntry& out_entry, TraversalContext& context) const {
// Setup invalid defaults.
out_entry->phys_addr = 0;
out_entry->block_size = page_size;
out_entry.phys_addr = 0;
out_entry.block_size = page_size;
// Validate that we can read the actual entry.
const auto page = context->next_page;
const auto page = context.next_page;
if (page >= backing_addr.size()) {
return false;
}
@ -55,9 +55,9 @@ bool PageTable::ContinueTraversal(TraversalEntry* out_entry, TraversalContext* c
}
// Populate the results.
out_entry->phys_addr = phys_addr + context->next_offset;
context->next_page = page + 1;
context->next_offset += page_size;
out_entry.phys_addr = phys_addr + context.next_offset;
context.next_page = page + 1;
context.next_offset += page_size;
return true;
}

4
src/common/page_table.h
View file

@ -99,9 +99,9 @@ struct PageTable {
PageTable(PageTable&&) noexcept = default;
PageTable& operator=(PageTable&&) noexcept = default;
bool BeginTraversal(TraversalEntry* out_entry, TraversalContext* out_context,
bool BeginTraversal(TraversalEntry& out_entry, TraversalContext& out_context,
u64 address) const;
bool ContinueTraversal(TraversalEntry* out_entry, TraversalContext* context) const;
bool ContinueTraversal(TraversalEntry& out_entry, TraversalContext& context) const;
/**
* Resizes the page table to be able to accommodate enough pages within

24
src/core/hle/kernel/k_page_table.cpp
View file

@ -41,24 +41,6 @@ constexpr std::size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceT
}
}
constexpr u64 GetAddressInRange(const KMemoryInfo& info, VAddr addr) {
if (info.GetAddress() < addr) {
return addr;
}
return info.GetAddress();
}
constexpr std::size_t GetSizeInRange(const KMemoryInfo& info, VAddr start, VAddr end) {
std::size_t size{info.GetSize()};
if (info.GetAddress() < start) {
size -= start - info.GetAddress();
}
if (info.GetEndAddress() > end) {
size -= info.GetEndAddress() - end;
}
return size;
}
} // namespace
KPageTable::KPageTable(Core::System& system_)
@ -724,8 +706,7 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr address, std::size_t size) {
size_t tot_size = 0;
cur_address = address;
next_valid =
impl.BeginTraversal(std::addressof(next_entry), std::addressof(context), cur_address);
next_valid = impl.BeginTraversal(next_entry, context, cur_address);
next_entry.block_size =
(next_entry.block_size - (next_entry.phys_addr & (next_entry.block_size - 1)));
@ -751,8 +732,7 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr address, std::size_t size) {
break;
}
next_valid =
impl.ContinueTraversal(std::addressof(next_entry), std::addressof(context));
next_valid = impl.ContinueTraversal(next_entry, context);
}
// Add the last block.