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Merge pull request #9504 from liamwhite/pg2

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k_page_group: synchronize
This commit is contained in:
bunnei 2022-12-28 17:28:31 -05:00 committed by GitHub
commit 60419dd35e
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GPG key ID: 4AEE18F83AFDEB23
11 changed files with 328 additions and 187 deletions
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1
src/core/CMakeLists.txt
View file

@ -226,6 +226,7 @@ add_library(core STATIC
hle/kernel/k_page_buffer.h
hle/kernel/k_page_heap.cpp
hle/kernel/k_page_heap.h
hle/kernel/k_page_group.cpp
hle/kernel/k_page_group.h
hle/kernel/k_page_table.cpp
hle/kernel/k_page_table.h

29
src/core/hle/kernel/k_code_memory.cpp
View file

@ -27,13 +27,13 @@ Result KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr, si
auto& page_table = m_owner->PageTable();
// Construct the page group.
m_page_group = {};
m_page_group.emplace(kernel, page_table.GetBlockInfoManager());
// Lock the memory.
R_TRY(page_table.LockForCodeMemory(&m_page_group, addr, size))
R_TRY(page_table.LockForCodeMemory(std::addressof(*m_page_group), addr, size))
// Clear the memory.
for (const auto& block : m_page_group.Nodes()) {
for (const auto& block : *m_page_group) {
std::memset(device_memory.GetPointer<void>(block.GetAddress()), 0xFF, block.GetSize());
}
@ -51,12 +51,13 @@ Result KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr, si
void KCodeMemory::Finalize() {
// Unlock.
if (!m_is_mapped && !m_is_owner_mapped) {
const size_t size = m_page_group.GetNumPages() * PageSize;
m_owner->PageTable().UnlockForCodeMemory(m_address, size, m_page_group);
const size_t size = m_page_group->GetNumPages() * PageSize;
m_owner->PageTable().UnlockForCodeMemory(m_address, size, *m_page_group);
}
// Close the page group.
m_page_group = {};
m_page_group->Close();
m_page_group->Finalize();
// Close our reference to our owner.
m_owner->Close();
@ -64,7 +65,7 @@ void KCodeMemory::Finalize() {
Result KCodeMemory::Map(VAddr address, size_t size) {
// Validate the size.
R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
R_UNLESS(m_page_group->GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
// Lock ourselves.
KScopedLightLock lk(m_lock);
@ -74,7 +75,7 @@ Result KCodeMemory::Map(VAddr address, size_t size) {
// Map the memory.
R_TRY(kernel.CurrentProcess()->PageTable().MapPages(
address, m_page_group, KMemoryState::CodeOut, KMemoryPermission::UserReadWrite));
address, *m_page_group, KMemoryState::CodeOut, KMemoryPermission::UserReadWrite));
// Mark ourselves as mapped.
m_is_mapped = true;
@ -84,13 +85,13 @@ Result KCodeMemory::Map(VAddr address, size_t size) {
Result KCodeMemory::Unmap(VAddr address, size_t size) {
// Validate the size.
R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
R_UNLESS(m_page_group->GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
// Lock ourselves.
KScopedLightLock lk(m_lock);
// Unmap the memory.
R_TRY(kernel.CurrentProcess()->PageTable().UnmapPages(address, m_page_group,
R_TRY(kernel.CurrentProcess()->PageTable().UnmapPages(address, *m_page_group,
KMemoryState::CodeOut));
// Mark ourselves as unmapped.
@ -101,7 +102,7 @@ Result KCodeMemory::Unmap(VAddr address, size_t size) {
Result KCodeMemory::MapToOwner(VAddr address, size_t size, Svc::MemoryPermission perm) {
// Validate the size.
R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
R_UNLESS(m_page_group->GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
// Lock ourselves.
KScopedLightLock lk(m_lock);
@ -125,7 +126,7 @@ 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));
m_owner->PageTable().MapPages(address, *m_page_group, KMemoryState::GeneratedCode, k_perm));
// Mark ourselves as mapped.
m_is_owner_mapped = true;
@ -135,13 +136,13 @@ Result KCodeMemory::MapToOwner(VAddr address, size_t size, Svc::MemoryPermission
Result KCodeMemory::UnmapFromOwner(VAddr address, size_t size) {
// Validate the size.
R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
R_UNLESS(m_page_group->GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
// Lock ourselves.
KScopedLightLock lk(m_lock);
// Unmap the memory.
R_TRY(m_owner->PageTable().UnmapPages(address, m_page_group, KMemoryState::GeneratedCode));
R_TRY(m_owner->PageTable().UnmapPages(address, *m_page_group, KMemoryState::GeneratedCode));
// Mark ourselves as unmapped.
m_is_owner_mapped = false;

6
src/core/hle/kernel/k_code_memory.h
View file

@ -3,6 +3,8 @@
#pragma once
#include <optional>
#include "common/common_types.h"
#include "core/device_memory.h"
#include "core/hle/kernel/k_auto_object.h"
@ -49,11 +51,11 @@ public:
return m_address;
}
size_t GetSize() const {
return m_is_initialized ? m_page_group.GetNumPages() * PageSize : 0;
return m_is_initialized ? m_page_group->GetNumPages() * PageSize : 0;
}
private:
KPageGroup m_page_group{};
std::optional<KPageGroup> m_page_group{};
KProcess* m_owner{};
VAddr m_address{};
KLightLock m_lock;

8
src/core/hle/kernel/k_memory_manager.cpp
View file

@ -223,7 +223,7 @@ Result KMemoryManager::AllocatePageGroupImpl(KPageGroup* out, size_t num_pages,
// Ensure that we don't leave anything un-freed.
ON_RESULT_FAILURE {
for (const auto& it : out->Nodes()) {
for (const auto& it : *out) {
auto& manager = this->GetManager(it.GetAddress());
const size_t node_num_pages = std::min<u64>(
it.GetNumPages(), (manager.GetEndAddress() - it.GetAddress()) / PageSize);
@ -285,7 +285,7 @@ Result KMemoryManager::AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 op
m_has_optimized_process[static_cast<size_t>(pool)], true));
// Open the first reference to the pages.
for (const auto& block : out->Nodes()) {
for (const auto& block : *out) {
PAddr cur_address = block.GetAddress();
size_t remaining_pages = block.GetNumPages();
while (remaining_pages > 0) {
@ -335,7 +335,7 @@ Result KMemoryManager::AllocateForProcess(KPageGroup* out, size_t num_pages, u32
// Perform optimized memory tracking, if we should.
if (optimized) {
// Iterate over the allocated blocks.
for (const auto& block : out->Nodes()) {
for (const auto& block : *out) {
// Get the block extents.
const PAddr block_address = block.GetAddress();
const size_t block_pages = block.GetNumPages();
@ -391,7 +391,7 @@ Result KMemoryManager::AllocateForProcess(KPageGroup* out, size_t num_pages, u32
}
} else {
// Set all the allocated memory.
for (const auto& block : out->Nodes()) {
for (const auto& block : *out) {
std::memset(m_system.DeviceMemory().GetPointer<void>(block.GetAddress()), fill_pattern,
block.GetSize());
}

121
src/core/hle/kernel/k_page_group.cpp Normal file
View file

@ -0,0 +1,121 @@
// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/kernel/k_dynamic_resource_manager.h"
#include "core/hle/kernel/k_memory_manager.h"
#include "core/hle/kernel/k_page_group.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel {
void KPageGroup::Finalize() {
KBlockInfo* cur = m_first_block;
while (cur != nullptr) {
KBlockInfo* next = cur->GetNext();
m_manager->Free(cur);
cur = next;
}
m_first_block = nullptr;
m_last_block = nullptr;
}
void KPageGroup::CloseAndReset() {
auto& mm = m_kernel.MemoryManager();
KBlockInfo* cur = m_first_block;
while (cur != nullptr) {
KBlockInfo* next = cur->GetNext();
mm.Close(cur->GetAddress(), cur->GetNumPages());
m_manager->Free(cur);
cur = next;
}
m_first_block = nullptr;
m_last_block = nullptr;
}
size_t KPageGroup::GetNumPages() const {
size_t num_pages = 0;
for (const auto& it : *this) {
num_pages += it.GetNumPages();
}
return num_pages;
}
Result KPageGroup::AddBlock(KPhysicalAddress addr, size_t num_pages) {
// Succeed immediately if we're adding no pages.
R_SUCCEED_IF(num_pages == 0);
// Check for overflow.
ASSERT(addr < addr + num_pages * PageSize);
// Try to just append to the last block.
if (m_last_block != nullptr) {
R_SUCCEED_IF(m_last_block->TryConcatenate(addr, num_pages));
}
// Allocate a new block.
KBlockInfo* new_block = m_manager->Allocate();
R_UNLESS(new_block != nullptr, ResultOutOfResource);
// Initialize the block.
new_block->Initialize(addr, num_pages);
// Add the block to our list.
if (m_last_block != nullptr) {
m_last_block->SetNext(new_block);
} else {
m_first_block = new_block;
}
m_last_block = new_block;
R_SUCCEED();
}
void KPageGroup::Open() const {
auto& mm = m_kernel.MemoryManager();
for (const auto& it : *this) {
mm.Open(it.GetAddress(), it.GetNumPages());
}
}
void KPageGroup::OpenFirst() const {
auto& mm = m_kernel.MemoryManager();
for (const auto& it : *this) {
mm.OpenFirst(it.GetAddress(), it.GetNumPages());
}
}
void KPageGroup::Close() const {
auto& mm = m_kernel.MemoryManager();
for (const auto& it : *this) {
mm.Close(it.GetAddress(), it.GetNumPages());
}
}
bool KPageGroup::IsEquivalentTo(const KPageGroup& rhs) const {
auto lit = this->begin();
auto rit = rhs.begin();
auto lend = this->end();
auto rend = rhs.end();
while (lit != lend && rit != rend) {
if (*lit != *rit) {
return false;
}
++lit;
++rit;
}
return lit == lend && rit == rend;
}
} // namespace Kernel

175
src/core/hle/kernel/k_page_group.h
View file

@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
@ -13,24 +13,23 @@
namespace Kernel {
class KBlockInfoManager;
class KernelCore;
class KPageGroup;
class KBlockInfo {
private:
friend class KPageGroup;
public:
constexpr KBlockInfo() = default;
constexpr explicit KBlockInfo() : m_next(nullptr) {}
constexpr void Initialize(PAddr addr, size_t np) {
constexpr void Initialize(KPhysicalAddress addr, size_t np) {
ASSERT(Common::IsAligned(addr, PageSize));
ASSERT(static_cast<u32>(np) == np);
m_page_index = static_cast<u32>(addr) / PageSize;
m_page_index = static_cast<u32>(addr / PageSize);
m_num_pages = static_cast<u32>(np);
}
constexpr PAddr GetAddress() const {
constexpr KPhysicalAddress GetAddress() const {
return m_page_index * PageSize;
}
constexpr size_t GetNumPages() const {
@ -39,10 +38,10 @@ public:
constexpr size_t GetSize() const {
return this->GetNumPages() * PageSize;
}
constexpr PAddr GetEndAddress() const {
constexpr KPhysicalAddress GetEndAddress() const {
return (m_page_index + m_num_pages) * PageSize;
}
constexpr PAddr GetLastAddress() const {
constexpr KPhysicalAddress GetLastAddress() const {
return this->GetEndAddress() - 1;
}
@ -62,8 +61,8 @@ public:
return !(*this == rhs);
}
constexpr bool IsStrictlyBefore(PAddr addr) const {
const PAddr end = this->GetEndAddress();
constexpr bool IsStrictlyBefore(KPhysicalAddress addr) const {
const KPhysicalAddress end = this->GetEndAddress();
if (m_page_index != 0 && end == 0) {
return false;
@ -72,11 +71,11 @@ public:
return end < addr;
}
constexpr bool operator<(PAddr addr) const {
constexpr bool operator<(KPhysicalAddress addr) const {
return this->IsStrictlyBefore(addr);
}
constexpr bool TryConcatenate(PAddr addr, size_t np) {
constexpr bool TryConcatenate(KPhysicalAddress addr, size_t np) {
if (addr != 0 && addr == this->GetEndAddress()) {
m_num_pages += static_cast<u32>(np);
return true;
@ -90,96 +89,118 @@ private:
}
private:
friend class KPageGroup;
KBlockInfo* m_next{};
u32 m_page_index{};
u32 m_num_pages{};
};
static_assert(sizeof(KBlockInfo) <= 0x10);
class KPageGroup final {
class KPageGroup {
public:
class Node final {
class Iterator {
public:
constexpr Node(u64 addr_, std::size_t num_pages_) : addr{addr_}, num_pages{num_pages_} {}
using iterator_category = std::forward_iterator_tag;
using value_type = const KBlockInfo;
using difference_type = std::ptrdiff_t;
using pointer = value_type*;
using reference = value_type&;
constexpr u64 GetAddress() const {
return addr;
constexpr explicit Iterator(pointer n) : m_node(n) {}
constexpr bool operator==(const Iterator& rhs) const {
return m_node == rhs.m_node;
}
constexpr bool operator!=(const Iterator& rhs) const {
return !(*this == rhs);
}
constexpr std::size_t GetNumPages() const {
return num_pages;
constexpr pointer operator->() const {
return m_node;
}
constexpr reference operator*() const {
return *m_node;
}
constexpr std::size_t GetSize() const {
return GetNumPages() * PageSize;
constexpr Iterator& operator++() {
m_node = m_node->GetNext();
return *this;
}
constexpr Iterator operator++(int) {
const Iterator it{*this};
++(*this);
return it;
}
private:
u64 addr{};
std::size_t num_pages{};
pointer m_node{};
};
public:
KPageGroup() = default;
KPageGroup(u64 address, u64 num_pages) {
ASSERT(AddBlock(address, num_pages).IsSuccess());
explicit KPageGroup(KernelCore& kernel, KBlockInfoManager* m)
: m_kernel{kernel}, m_manager{m} {}
~KPageGroup() {
this->Finalize();
}
constexpr std::list<Node>& Nodes() {
return nodes;
void CloseAndReset();
void Finalize();
Iterator begin() const {
return Iterator{m_first_block};
}
Iterator end() const {
return Iterator{nullptr};
}
bool empty() const {
return m_first_block == nullptr;
}
constexpr const std::list<Node>& Nodes() const {
return nodes;
Result AddBlock(KPhysicalAddress addr, size_t num_pages);
void Open() const;
void OpenFirst() const;
void Close() const;
size_t GetNumPages() const;
bool IsEquivalentTo(const KPageGroup& rhs) const;
bool operator==(const KPageGroup& rhs) const {
return this->IsEquivalentTo(rhs);
}
std::size_t GetNumPages() const {
std::size_t num_pages = 0;
for (const Node& node : nodes) {
num_pages += node.GetNumPages();
bool operator!=(const KPageGroup& rhs) const {
return !(*this == rhs);
}
return num_pages;
}
bool IsEqual(KPageGroup& other) const {
auto this_node = nodes.begin();
auto other_node = other.nodes.begin();
while (this_node != nodes.end() && other_node != other.nodes.end()) {
if (this_node->GetAddress() != other_node->GetAddress() ||
this_node->GetNumPages() != other_node->GetNumPages()) {
return false;
}
this_node = std::next(this_node);
other_node = std::next(other_node);
}
return this_node == nodes.end() && other_node == other.nodes.end();
}
Result AddBlock(u64 address, u64 num_pages) {
if (!num_pages) {
return ResultSuccess;
}
if (!nodes.empty()) {
const auto node = nodes.back();
if (node.GetAddress() + node.GetNumPages() * PageSize == address) {
address = node.GetAddress();
num_pages += node.GetNumPages();
nodes.pop_back();
}
}
nodes.push_back({address, num_pages});
return ResultSuccess;
}
bool Empty() const {
return nodes.empty();
}
void Finalize() {}
private:
std::list<Node> nodes;
KernelCore& m_kernel;
KBlockInfo* m_first_block{};
KBlockInfo* m_last_block{};
KBlockInfoManager* m_manager{};
};
class KScopedPageGroup {
public:
explicit KScopedPageGroup(const KPageGroup* gp) : m_pg(gp) {
if (m_pg) {
m_pg->Open();
}
}
explicit KScopedPageGroup(const KPageGroup& gp) : KScopedPageGroup(std::addressof(gp)) {}
~KScopedPageGroup() {
if (m_pg) {
m_pg->Close();
}
}
void CancelClose() {
m_pg = nullptr;
}
private:
const KPageGroup* m_pg{};
};
} // namespace Kernel

136
src/core/hle/kernel/k_page_table.cpp
View file

@ -100,7 +100,7 @@ constexpr size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceType a
KPageTable::KPageTable(Core::System& system_)
: m_general_lock{system_.Kernel()},
m_map_physical_memory_lock{system_.Kernel()}, m_system{system_} {}
m_map_physical_memory_lock{system_.Kernel()}, m_system{system_}, m_kernel{system_.Kernel()} {}
KPageTable::~KPageTable() = default;
@ -373,7 +373,7 @@ Result KPageTable::MapProcessCode(VAddr addr, size_t num_pages, KMemoryState sta
m_memory_block_slab_manager);
// Allocate and open.
KPageGroup pg;
KPageGroup pg{m_kernel, m_block_info_manager};
R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpen(
&pg, num_pages,
KMemoryManager::EncodeOption(KMemoryManager::Pool::Application, m_allocation_option)));
@ -432,7 +432,7 @@ Result KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, size_t si
const size_t num_pages = size / PageSize;
// Create page groups for the memory being mapped.
KPageGroup pg;
KPageGroup pg{m_kernel, m_block_info_manager};
AddRegionToPages(src_address, num_pages, pg);
// Reprotect the source as kernel-read/not mapped.
@ -593,7 +593,7 @@ Result KPageTable::MakePageGroup(KPageGroup& pg, VAddr addr, size_t num_pages) {
const size_t size = num_pages * PageSize;
// We're making a new group, not adding to an existing one.
R_UNLESS(pg.Empty(), ResultInvalidCurrentMemory);
R_UNLESS(pg.empty(), ResultInvalidCurrentMemory);
// Begin traversal.
Common::PageTable::TraversalContext context;
@ -640,11 +640,10 @@ Result KPageTable::MakePageGroup(KPageGroup& pg, VAddr addr, size_t num_pages) {
R_SUCCEED();
}
bool KPageTable::IsValidPageGroup(const KPageGroup& pg_ll, VAddr addr, size_t num_pages) {
bool KPageTable::IsValidPageGroup(const KPageGroup& pg, VAddr addr, size_t num_pages) {
ASSERT(this->IsLockedByCurrentThread());
const size_t size = num_pages * PageSize;
const auto& pg = pg_ll.Nodes();
const auto& memory_layout = m_system.Kernel().MemoryLayout();
// Empty groups are necessarily invalid.
@ -942,9 +941,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add
ON_RESULT_FAILURE {
if (cur_mapped_addr != dst_addr) {
// HACK: Manually close the pages.
HACK_ClosePages(dst_addr, (cur_mapped_addr - dst_addr) / PageSize);
ASSERT(Operate(dst_addr, (cur_mapped_addr - dst_addr) / PageSize,
KMemoryPermission::None, OperationType::Unmap)
.IsSuccess());
@ -1020,9 +1016,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add
// Map the page.
R_TRY(Operate(cur_mapped_addr, 1, test_perm, OperationType::Map, start_partial_page));
// HACK: Manually open the pages.
HACK_OpenPages(start_partial_page, 1);
// Update tracking extents.
cur_mapped_addr += PageSize;
cur_block_addr += PageSize;
@ -1051,9 +1044,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add
R_TRY(Operate(cur_mapped_addr, cur_block_size / PageSize, test_perm, OperationType::Map,
cur_block_addr));
// HACK: Manually open the pages.
HACK_OpenPages(cur_block_addr, cur_block_size / PageSize);
// Update tracking extents.
cur_mapped_addr += cur_block_size;
cur_block_addr = next_entry.phys_addr;
@ -1073,9 +1063,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add
R_TRY(Operate(cur_mapped_addr, last_block_size / PageSize, test_perm, OperationType::Map,
cur_block_addr));
// HACK: Manually open the pages.
HACK_OpenPages(cur_block_addr, last_block_size / PageSize);
// Update tracking extents.
cur_mapped_addr += last_block_size;
cur_block_addr += last_block_size;
@ -1107,9 +1094,6 @@ Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_add
// Map the page.
R_TRY(Operate(cur_mapped_addr, 1, test_perm, OperationType::Map, end_partial_page));
// HACK: Manually open the pages.
HACK_OpenPages(end_partial_page, 1);
}
// Update memory blocks to reflect our changes
@ -1211,9 +1195,6 @@ Result KPageTable::CleanupForIpcServer(VAddr address, size_t size, KMemoryState
const size_t aligned_size = aligned_end - aligned_start;
const size_t aligned_num_pages = aligned_size / PageSize;
// HACK: Manually close the pages.
HACK_ClosePages(aligned_start, aligned_num_pages);
// Unmap the pages.
R_TRY(Operate(aligned_start, aligned_num_pages, KMemoryPermission::None, OperationType::Unmap));
@ -1501,17 +1482,6 @@ void KPageTable::CleanupForIpcClientOnServerSetupFailure([[maybe_unused]] PageLi
}
}
void KPageTable::HACK_OpenPages(PAddr phys_addr, size_t num_pages) {
m_system.Kernel().MemoryManager().OpenFirst(phys_addr, num_pages);
}
void KPageTable::HACK_ClosePages(VAddr virt_addr, size_t num_pages) {
for (size_t index = 0; index < num_pages; ++index) {
const auto paddr = GetPhysicalAddr(virt_addr + (index * PageSize));
m_system.Kernel().MemoryManager().Close(paddr, 1);
}
}
Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
// Lock the physical memory lock.
KScopedLightLock phys_lk(m_map_physical_memory_lock);
@ -1572,7 +1542,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
// Allocate pages for the new memory.
KPageGroup pg;
KPageGroup pg{m_kernel, m_block_info_manager};
R_TRY(m_system.Kernel().MemoryManager().AllocateForProcess(
&pg, (size - mapped_size) / PageSize, m_allocate_option, 0, 0));
@ -1650,7 +1620,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
KScopedPageTableUpdater updater(this);
// Prepare to iterate over the memory.
auto pg_it = pg.Nodes().begin();
auto pg_it = pg.begin();
PAddr pg_phys_addr = pg_it->GetAddress();
size_t pg_pages = pg_it->GetNumPages();
@ -1680,9 +1650,6 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
last_unmap_address + 1 - cur_address) /
PageSize;
// HACK: Manually close the pages.
HACK_ClosePages(cur_address, cur_pages);
// Unmap.
ASSERT(Operate(cur_address, cur_pages, KMemoryPermission::None,
OperationType::Unmap)
@ -1703,7 +1670,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
// Release any remaining unmapped memory.
m_system.Kernel().MemoryManager().OpenFirst(pg_phys_addr, pg_pages);
m_system.Kernel().MemoryManager().Close(pg_phys_addr, pg_pages);
for (++pg_it; pg_it != pg.Nodes().end(); ++pg_it) {
for (++pg_it; pg_it != pg.end(); ++pg_it) {
m_system.Kernel().MemoryManager().OpenFirst(pg_it->GetAddress(),
pg_it->GetNumPages());
m_system.Kernel().MemoryManager().Close(pg_it->GetAddress(),
@ -1731,7 +1698,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
// 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.Nodes().end());
ASSERT(pg_it != pg.end());
// Advance our physical block.
++pg_it;
@ -1742,10 +1709,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
// Map whatever we can.
const size_t cur_pages = std::min(pg_pages, map_pages);
R_TRY(Operate(cur_address, cur_pages, KMemoryPermission::UserReadWrite,
OperationType::Map, pg_phys_addr));
// HACK: Manually open the pages.
HACK_OpenPages(pg_phys_addr, cur_pages);
OperationType::MapFirst, pg_phys_addr));
// Advance.
cur_address += cur_pages * PageSize;
@ -1888,9 +1852,6 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
last_address + 1 - cur_address) /
PageSize;
// HACK: Manually close the pages.
HACK_ClosePages(cur_address, cur_pages);
// Unmap.
ASSERT(Operate(cur_address, cur_pages, KMemoryPermission::None, OperationType::Unmap)
.IsSuccess());
@ -1955,7 +1916,7 @@ Result KPageTable::MapMemory(VAddr dst_address, VAddr src_address, size_t size)
R_TRY(dst_allocator_result);
// Map the memory.
KPageGroup page_linked_list;
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);
@ -2022,14 +1983,14 @@ Result KPageTable::UnmapMemory(VAddr dst_address, VAddr src_address, size_t size
num_dst_allocator_blocks);
R_TRY(dst_allocator_result);
KPageGroup src_pages;
KPageGroup dst_pages;
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};
AddRegionToPages(src_address, num_pages, src_pages);
AddRegionToPages(dst_address, num_pages, dst_pages);
R_UNLESS(dst_pages.IsEqual(src_pages), ResultInvalidMemoryRegion);
R_UNLESS(dst_pages.IsEquivalentTo(src_pages), ResultInvalidMemoryRegion);
{
auto block_guard = detail::ScopeExit([&] { MapPages(dst_address, dst_pages, dst_perm); });
@ -2060,7 +2021,7 @@ Result KPageTable::MapPages(VAddr addr, const KPageGroup& page_linked_list,
VAddr cur_addr{addr};
for (const auto& node : page_linked_list.Nodes()) {
for (const auto& node : page_linked_list) {
if (const auto result{
Operate(cur_addr, node.GetNumPages(), perm, OperationType::Map, node.GetAddress())};
result.IsError()) {
@ -2160,7 +2121,7 @@ Result KPageTable::UnmapPages(VAddr addr, const KPageGroup& page_linked_list) {
VAddr cur_addr{addr};
for (const auto& node : page_linked_list.Nodes()) {
for (const auto& node : page_linked_list) {
if (const auto result{Operate(cur_addr, node.GetNumPages(), KMemoryPermission::None,
OperationType::Unmap)};
result.IsError()) {
@ -2527,13 +2488,13 @@ Result KPageTable::SetHeapSize(VAddr* out, size_t size) {
R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
// Allocate pages for the heap extension.
KPageGroup pg;
KPageGroup pg{m_kernel, m_block_info_manager};
R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpen(
&pg, allocation_size / PageSize,
KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option)));
// Clear all the newly allocated pages.
for (const auto& it : pg.Nodes()) {
for (const auto& it : pg) {
std::memset(m_system.DeviceMemory().GetPointer<void>(it.GetAddress()), m_heap_fill_value,
it.GetSize());
}
@ -2610,11 +2571,23 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(size_t needed_num_pages, size_
if (is_map_only) {
R_TRY(Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr));
} else {
KPageGroup page_group;
R_TRY(m_system.Kernel().MemoryManager().AllocateForProcess(
&page_group, needed_num_pages,
KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option), 0, 0));
R_TRY(Operate(addr, needed_num_pages, page_group, OperationType::MapGroup));
// 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.
@ -2795,21 +2768,30 @@ Result KPageTable::Operate(VAddr addr, size_t num_pages, const KPageGroup& page_
ASSERT(num_pages > 0);
ASSERT(num_pages == page_group.GetNumPages());
for (const auto& node : page_group.Nodes()) {
switch (operation) {
case OperationType::MapGroup: {
// We want to maintain a new reference to every page in the group.
KScopedPageGroup spg(page_group);
for (const auto& node : page_group) {
const size_t size{node.GetNumPages() * PageSize};
switch (operation) {
case OperationType::MapGroup:
// Map the pages.
m_system.Memory().MapMemoryRegion(*m_page_table_impl, addr, size, node.GetAddress());
addr += size;
}
// We succeeded! We want to persist the reference to the pages.
spg.CancelClose();
break;
}
default:
ASSERT(false);
break;
}
addr += size;
}
R_SUCCEED();
}
@ -2822,13 +2804,29 @@ Result KPageTable::Operate(VAddr addr, size_t num_pages, KMemoryPermission perm,
ASSERT(ContainsPages(addr, num_pages));
switch (operation) {
case OperationType::Unmap:
case OperationType::Unmap: {
// Ensure that any pages we track close on exit.
KPageGroup pages_to_close{m_kernel, this->GetBlockInfoManager()};
SCOPE_EXIT({ pages_to_close.CloseAndReset(); });
this->AddRegionToPages(addr, num_pages, pages_to_close);
m_system.Memory().UnmapRegion(*m_page_table_impl, addr, num_pages * PageSize);
break;
}
case OperationType::MapFirst:
case OperationType::Map: {
ASSERT(map_addr);
ASSERT(Common::IsAligned(map_addr, PageSize));
m_system.Memory().MapMemoryRegion(*m_page_table_impl, addr, num_pages * PageSize, map_addr);
// Open references to pages, if we should.
if (IsHeapPhysicalAddress(m_kernel.MemoryLayout(), map_addr)) {
if (operation == OperationType::MapFirst) {
m_kernel.MemoryManager().OpenFirst(map_addr, num_pages);
} else {
m_kernel.MemoryManager().Open(map_addr, num_pages);
}
}
break;
}
case OperationType::Separate: {

9
src/core/hle/kernel/k_page_table.h
View file

@ -107,6 +107,10 @@ public:
return *m_page_table_impl;
}
KBlockInfoManager* GetBlockInfoManager() {
return m_block_info_manager;
}
bool CanContain(VAddr addr, size_t size, KMemoryState state) const;
protected:
@ -261,10 +265,6 @@ private:
void CleanupForIpcClientOnServerSetupFailure(PageLinkedList* page_list, VAddr address,
size_t size, KMemoryPermission prot_perm);
// HACK: These will be removed once we automatically manage page reference counts.
void HACK_OpenPages(PAddr phys_addr, size_t num_pages);
void HACK_ClosePages(VAddr virt_addr, size_t num_pages);
mutable KLightLock m_general_lock;
mutable KLightLock m_map_physical_memory_lock;
@ -488,6 +488,7 @@ private:
std::unique_ptr<Common::PageTable> m_page_table_impl;
Core::System& m_system;
KernelCore& m_kernel;
};
} // namespace Kernel

19
src/core/hle/kernel/k_shared_memory.cpp
View file

@ -13,10 +13,7 @@
namespace Kernel {
KSharedMemory::KSharedMemory(KernelCore& kernel_) : KAutoObjectWithSlabHeapAndContainer{kernel_} {}
KSharedMemory::~KSharedMemory() {
kernel.GetSystemResourceLimit()->Release(LimitableResource::PhysicalMemoryMax, size);
}
KSharedMemory::~KSharedMemory() = default;
Result KSharedMemory::Initialize(Core::DeviceMemory& device_memory_, KProcess* owner_process_,
Svc::MemoryPermission owner_permission_,
@ -49,7 +46,8 @@ Result KSharedMemory::Initialize(Core::DeviceMemory& device_memory_, KProcess* o
R_UNLESS(physical_address != 0, ResultOutOfMemory);
//! Insert the result into our page group.
page_group.emplace(physical_address, num_pages);
page_group.emplace(kernel, &kernel.GetSystemSystemResource().GetBlockInfoManager());
page_group->AddBlock(physical_address, num_pages);
// Commit our reservation.
memory_reservation.Commit();
@ -62,7 +60,7 @@ Result KSharedMemory::Initialize(Core::DeviceMemory& device_memory_, KProcess* o
is_initialized = true;
// Clear all pages in the memory.
for (const auto& block : page_group->Nodes()) {
for (const auto& block : *page_group) {
std::memset(device_memory_.GetPointer<void>(block.GetAddress()), 0, block.GetSize());
}
@ -71,13 +69,8 @@ Result KSharedMemory::Initialize(Core::DeviceMemory& device_memory_, KProcess* o
void KSharedMemory::Finalize() {
// Close and finalize the page group.
// page_group->Close();
// page_group->Finalize();
//! HACK: Manually close.
for (const auto& block : page_group->Nodes()) {
kernel.MemoryManager().Close(block.GetAddress(), block.GetNumPages());
}
page_group->Close();
page_group->Finalize();
// Release the memory reservation.
resource_limit->Release(LimitableResource::PhysicalMemoryMax, size);

3
src/core/hle/kernel/memory_types.h
View file

@ -14,4 +14,7 @@ constexpr std::size_t PageSize{1 << PageBits};
using Page = std::array<u8, PageSize>;
using KPhysicalAddress = PAddr;
using KProcessAddress = VAddr;
} // namespace Kernel

2
src/core/hle/kernel/svc.cpp
View file

@ -1485,7 +1485,7 @@ static Result MapProcessMemory(Core::System& system, VAddr dst_address, Handle p
ResultInvalidMemoryRegion);
// Create a new page group.
KPageGroup pg;
KPageGroup pg{system.Kernel(), dst_pt.GetBlockInfoManager()};
R_TRY(src_pt.MakeAndOpenPageGroup(
std::addressof(pg), src_address, size / PageSize, KMemoryState::FlagCanMapProcess,
KMemoryState::FlagCanMapProcess, KMemoryPermission::None, KMemoryPermission::None,