video_core: Page manager/region manager optimization (#3070)

* Bit array test

* Some corrections

* Fix AVX path on SetRange

* Finish bitArray

* Batched protect progress

* Inclusion fix

* Last logic fixes for BitArray

* Page manager: batch protect, masked ranges

* Page manager bitarray

* clang-format

* Fix out of bounds read

* clang

* clang

* Lock during callbacks

* Rename untracked to writeable

* Construct and mask in one step

* Sync on region mutex for thw whole protection

This is a temporary workarround until a fix is found for the page manager having issues when multiple threads update the same page at the same time.

* Bring back the gpu masking until properly handled

* Sync page manager protections

* clang-format

* Rename and fixups

* I fucked up clang-formatting one more time...

* kek
This commit is contained in:
Lander Gallastegi 2025-06-20 12:00:23 +02:00 committed by GitHub
parent e214ca6884
commit be12305f65
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
10 changed files with 781 additions and 361 deletions

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@ -653,6 +653,7 @@ set(COMMON src/common/logging/backend.cpp
src/common/arch.h
src/common/assert.cpp
src/common/assert.h
src/common/bit_array.h
src/common/bit_field.h
src/common/bounded_threadsafe_queue.h
src/common/concepts.h
@ -913,9 +914,10 @@ set(VIDEO_CORE src/video_core/amdgpu/liverpool.cpp
src/video_core/buffer_cache/buffer.h
src/video_core/buffer_cache/buffer_cache.cpp
src/video_core/buffer_cache/buffer_cache.h
src/video_core/buffer_cache/memory_tracker_base.h
src/video_core/buffer_cache/memory_tracker.h
src/video_core/buffer_cache/range_set.h
src/video_core/buffer_cache/word_manager.h
src/video_core/buffer_cache/region_definitions.h
src/video_core/buffer_cache/region_manager.h
src/video_core/renderer_vulkan/liverpool_to_vk.cpp
src/video_core/renderer_vulkan/liverpool_to_vk.h
src/video_core/renderer_vulkan/vk_common.cpp

411
src/common/bit_array.h Normal file
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@ -0,0 +1,411 @@
// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
#include <cstddef>
#include "common/types.h"
#ifdef __AVX2__
#define BIT_ARRAY_USE_AVX
#include <immintrin.h>
#endif
namespace Common {
template <size_t N>
class BitArray {
static_assert(N % 64 == 0, "BitArray size must be a multiple of 64 bits.");
static constexpr size_t BITS_PER_WORD = 64;
static constexpr size_t WORD_COUNT = N / BITS_PER_WORD;
static constexpr size_t WORDS_PER_AVX = 4;
static constexpr size_t AVX_WORD_COUNT = WORD_COUNT / WORDS_PER_AVX;
public:
using Range = std::pair<size_t, size_t>;
class Iterator {
public:
explicit Iterator(const BitArray& bit_array_, u64 start) : bit_array(bit_array_) {
range = bit_array.FirstRangeFrom(start);
}
Iterator& operator++() {
range = bit_array.FirstRangeFrom(range.second);
return *this;
}
bool operator==(const Iterator& other) const {
return range == other.range;
}
bool operator!=(const Iterator& other) const {
return !(*this == other);
}
const Range& operator*() const {
return range;
}
const Range* operator->() const {
return &range;
}
private:
const BitArray& bit_array;
Range range;
};
using const_iterator = Iterator;
using iterator_category = std::forward_iterator_tag;
using value_type = Range;
using difference_type = std::ptrdiff_t;
using pointer = const Range*;
using reference = const Range&;
BitArray() = default;
BitArray(const BitArray& other) = default;
BitArray& operator=(const BitArray& other) = default;
BitArray(BitArray&& other) noexcept = default;
BitArray& operator=(BitArray&& other) noexcept = default;
~BitArray() = default;
BitArray(const BitArray& other, size_t start, size_t end) {
if (start >= end || end > N) {
return;
}
const size_t first_word = start / BITS_PER_WORD;
const size_t last_word = (end - 1) / BITS_PER_WORD;
const size_t start_bit = start % BITS_PER_WORD;
const size_t end_bit = (end - 1) % BITS_PER_WORD;
const u64 start_mask = ~((1ULL << start_bit) - 1);
const u64 end_mask = end_bit == BITS_PER_WORD - 1 ? ~0ULL : (1ULL << (end_bit + 1)) - 1;
if (first_word == last_word) {
data[first_word] = other.data[first_word] & (start_mask & end_mask);
} else {
data[first_word] = other.data[first_word] & start_mask;
size_t i = first_word + 1;
#ifdef BIT_ARRAY_USE_AVX
for (; i + WORDS_PER_AVX <= last_word; i += WORDS_PER_AVX) {
const __m256i current =
_mm256_loadu_si256(reinterpret_cast<const __m256i*>(&other.data[i]));
_mm256_storeu_si256(reinterpret_cast<__m256i*>(&data[i]), current);
}
#endif
for (; i < last_word; ++i) {
data[i] = other.data[i];
}
data[last_word] = other.data[last_word] & end_mask;
}
}
BitArray(const BitArray& other, const Range& range)
: BitArray(other, range.first, range.second) {}
const_iterator begin() const {
return Iterator(*this, 0);
}
const_iterator end() const {
return Iterator(*this, N);
}
inline constexpr void Set(size_t idx) {
data[idx / BITS_PER_WORD] |= (1ULL << (idx % BITS_PER_WORD));
}
inline constexpr void Unset(size_t idx) {
data[idx / BITS_PER_WORD] &= ~(1ULL << (idx % BITS_PER_WORD));
}
inline constexpr bool Get(size_t idx) const {
return (data[idx / BITS_PER_WORD] & (1ULL << (idx % BITS_PER_WORD))) != 0;
}
inline void SetRange(size_t start, size_t end) {
if (start >= end || end > N) {
return;
}
const size_t first_word = start / BITS_PER_WORD;
const size_t last_word = (end - 1) / BITS_PER_WORD;
const size_t start_bit = start % BITS_PER_WORD;
const size_t end_bit = (end - 1) % BITS_PER_WORD;
const u64 start_mask = ~((1ULL << start_bit) - 1);
const u64 end_mask = end_bit == BITS_PER_WORD - 1 ? ~0ULL : (1ULL << (end_bit + 1)) - 1;
if (first_word == last_word) {
data[first_word] |= start_mask & end_mask;
} else {
data[first_word] |= start_mask;
size_t i = first_word + 1;
#ifdef BIT_ARRAY_USE_AVX
const __m256i value = _mm256_set1_epi64x(-1);
for (; i + WORDS_PER_AVX <= last_word; i += WORDS_PER_AVX) {
_mm256_storeu_si256(reinterpret_cast<__m256i*>(&data[i]), value);
}
#endif
for (; i < last_word; ++i) {
data[i] = ~0ULL;
}
data[last_word] |= end_mask;
}
}
inline void UnsetRange(size_t start, size_t end) {
if (start >= end || end > N) {
return;
}
size_t first_word = start / BITS_PER_WORD;
const size_t last_word = (end - 1) / BITS_PER_WORD;
const size_t start_bit = start % BITS_PER_WORD;
const size_t end_bit = (end - 1) % BITS_PER_WORD;
const u64 start_mask = (1ULL << start_bit) - 1;
const u64 end_mask = end_bit == BITS_PER_WORD - 1 ? 0ULL : ~((1ULL << (end_bit + 1)) - 1);
if (first_word == last_word) {
data[first_word] &= start_mask | end_mask;
} else {
data[first_word] &= start_mask;
size_t i = first_word + 1;
#ifdef BIT_ARRAY_USE_AVX
const __m256i value = _mm256_setzero_si256();
for (; i + WORDS_PER_AVX <= last_word; i += WORDS_PER_AVX) {
_mm256_storeu_si256(reinterpret_cast<__m256i*>(&data[i]), value);
}
#endif
for (; i < last_word; ++i) {
data[i] = 0ULL;
}
data[last_word] &= end_mask;
}
}
inline constexpr void SetRange(const Range& range) {
SetRange(range.first, range.second);
}
inline constexpr void UnsetRange(const Range& range) {
UnsetRange(range.first, range.second);
}
inline constexpr void Clear() {
data.fill(0);
}
inline constexpr void Fill() {
data.fill(~0ULL);
}
inline constexpr bool None() const {
u64 result = 0;
for (const auto& word : data) {
result |= word;
}
return result == 0;
}
inline constexpr bool Any() const {
return !None();
}
Range FirstRangeFrom(size_t start) const {
if (start >= N) {
return {N, N};
}
const auto find_end_bit = [&](size_t word) {
#ifdef BIT_ARRAY_USE_AVX
const __m256i all_one = _mm256_set1_epi64x(-1);
for (; word + WORDS_PER_AVX <= WORD_COUNT; word += WORDS_PER_AVX) {
const __m256i current =
_mm256_loadu_si256(reinterpret_cast<const __m256i*>(&data[word]));
const __m256i cmp = _mm256_cmpeq_epi64(current, all_one);
if (_mm256_movemask_epi8(cmp) != 0xFFFFFFFF) {
break;
}
}
#endif
for (; word < WORD_COUNT; ++word) {
if (data[word] != ~0ULL) {
return (word * BITS_PER_WORD) + std::countr_one(data[word]);
}
}
return N;
};
const auto word_bits = [&](size_t index, u64 word) {
const int empty_bits = std::countr_zero(word);
const int ones_count = std::countr_one(word >> empty_bits);
const size_t start_bit = index * BITS_PER_WORD + empty_bits;
if (ones_count + empty_bits < BITS_PER_WORD) {
return Range{start_bit, start_bit + ones_count};
}
return Range{start_bit, find_end_bit(index + 1)};
};
const size_t start_word = start / BITS_PER_WORD;
const size_t start_bit = start % BITS_PER_WORD;
const u64 masked_first = data[start_word] & (~((1ULL << start_bit) - 1));
if (masked_first) {
return word_bits(start_word, masked_first);
}
size_t word = start_word + 1;
#ifdef BIT_ARRAY_USE_AVX
for (; word + WORDS_PER_AVX <= WORD_COUNT; word += WORDS_PER_AVX) {
const __m256i current =
_mm256_loadu_si256(reinterpret_cast<const __m256i*>(&data[word]));
if (!_mm256_testz_si256(current, current)) {
break;
}
}
#endif
for (; word < WORD_COUNT; ++word) {
if (data[word] != 0) {
return word_bits(word, data[word]);
}
}
return {N, N};
}
inline constexpr Range FirstRange() const {
return FirstRangeFrom(0);
}
Range LastRangeFrom(size_t end) const {
if (end == 0) {
return {0, 0};
}
if (end > N) {
end = N;
}
const auto find_start_bit = [&](size_t word) {
#ifdef BIT_ARRAY_USE_AVX
const __m256i all_zero = _mm256_setzero_si256();
for (; word >= WORDS_PER_AVX; word -= WORDS_PER_AVX) {
const __m256i current = _mm256_loadu_si256(
reinterpret_cast<const __m256i*>(&data[word - WORDS_PER_AVX]));
const __m256i cmp = _mm256_cmpeq_epi64(current, all_zero);
if (_mm256_movemask_epi8(cmp) != 0xFFFFFFFF) {
break;
}
}
#endif
for (; word > 0; --word) {
if (data[word - 1] != ~0ULL) {
return word * BITS_PER_WORD - std::countl_one(data[word - 1]);
}
}
return size_t(0);
};
const auto word_bits = [&](size_t index, u64 word) {
const int empty_bits = std::countl_zero(word);
const int ones_count = std::countl_one(word << empty_bits);
const size_t end_bit = index * BITS_PER_WORD - empty_bits;
if (empty_bits + ones_count < BITS_PER_WORD) {
return Range{end_bit - ones_count, end_bit};
}
return Range{find_start_bit(index - 1), end_bit};
};
const size_t end_word = ((end - 1) / BITS_PER_WORD) + 1;
const size_t end_bit = (end - 1) % BITS_PER_WORD;
u64 masked_last = data[end_word - 1];
if (end_bit < BITS_PER_WORD - 1) {
masked_last &= (1ULL << (end_bit + 1)) - 1;
}
if (masked_last) {
return word_bits(end_word, masked_last);
}
size_t word = end_word - 1;
#ifdef BIT_ARRAY_USE_AVX
for (; word >= WORDS_PER_AVX; word -= WORDS_PER_AVX) {
const __m256i current =
_mm256_loadu_si256(reinterpret_cast<const __m256i*>(&data[word - WORDS_PER_AVX]));
if (!_mm256_testz_si256(current, current)) {
break;
}
}
#endif
for (; word > 0; --word) {
if (data[word - 1] != 0) {
return word_bits(word, data[word - 1]);
}
}
return {0, 0};
}
inline constexpr Range LastRange() const {
return LastRangeFrom(N);
}
inline constexpr size_t Size() const {
return N;
}
inline constexpr BitArray& operator|=(const BitArray& other) {
for (size_t i = 0; i < WORD_COUNT; ++i) {
data[i] |= other.data[i];
}
return *this;
}
inline constexpr BitArray& operator&=(const BitArray& other) {
for (size_t i = 0; i < WORD_COUNT; ++i) {
data[i] &= other.data[i];
}
return *this;
}
inline constexpr BitArray& operator^=(const BitArray& other) {
for (size_t i = 0; i < WORD_COUNT; ++i) {
data[i] ^= other.data[i];
}
return *this;
}
inline constexpr BitArray& operator~() {
for (size_t i = 0; i < WORD_COUNT; ++i) {
data[i] = ~data[i];
}
return *this;
}
inline constexpr BitArray operator|(const BitArray& other) const {
BitArray result = *this;
result |= other;
return result;
}
inline constexpr BitArray operator&(const BitArray& other) const {
BitArray result = *this;
result &= other;
return result;
}
inline constexpr BitArray operator^(const BitArray& other) const {
BitArray result = *this;
result ^= other;
return result;
}
inline constexpr BitArray operator~() const {
BitArray result = *this;
result = ~result;
return result;
}
inline constexpr bool operator==(const BitArray& other) const {
u64 result = 0;
for (size_t i = 0; i < WORD_COUNT; ++i) {
result |= data[i] ^ other.data[i];
}
return result == 0;
}
inline constexpr bool operator!=(const BitArray& other) const {
return !(*this == other);
}
private:
std::array<u64, WORD_COUNT> data{};
};
} // namespace Common

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@ -9,7 +9,7 @@
#include "common/slot_vector.h"
#include "common/types.h"
#include "video_core/buffer_cache/buffer.h"
#include "video_core/buffer_cache/memory_tracker_base.h"
#include "video_core/buffer_cache/memory_tracker.h"
#include "video_core/buffer_cache/range_set.h"
#include "video_core/multi_level_page_table.h"

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@ -9,7 +9,7 @@
#include <vector>
#include "common/debug.h"
#include "common/types.h"
#include "video_core/buffer_cache/word_manager.h"
#include "video_core/buffer_cache/region_manager.h"
namespace VideoCore {

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@ -0,0 +1,28 @@
// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
#include "common/bit_array.h"
#include "common/types.h"
namespace VideoCore {
constexpr u64 PAGES_PER_WORD = 64;
constexpr u64 BYTES_PER_PAGE = 4_KB;
constexpr u64 HIGHER_PAGE_BITS = 22;
constexpr u64 HIGHER_PAGE_SIZE = 1ULL << HIGHER_PAGE_BITS;
constexpr u64 HIGHER_PAGE_MASK = HIGHER_PAGE_SIZE - 1ULL;
constexpr u64 NUM_REGION_PAGES = HIGHER_PAGE_SIZE / BYTES_PER_PAGE;
enum class Type {
CPU,
GPU,
Writeable,
};
using RegionBits = Common::BitArray<NUM_REGION_PAGES>;
} // namespace VideoCore

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@ -0,0 +1,208 @@
// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <mutex>
#include <utility>
#include "common/div_ceil.h"
#ifdef __linux__
#include "common/adaptive_mutex.h"
#else
#include "common/spin_lock.h"
#endif
#include "common/debug.h"
#include "common/types.h"
#include "video_core/buffer_cache/region_definitions.h"
#include "video_core/page_manager.h"
namespace VideoCore {
/**
* Allows tracking CPU and GPU modification of pages in a contigious 4MB virtual address region.
* Information is stored in bitsets for spacial locality and fast update of single pages.
*/
class RegionManager {
public:
explicit RegionManager(PageManager* tracker_, VAddr cpu_addr_)
: tracker{tracker_}, cpu_addr{cpu_addr_} {
cpu.Fill();
gpu.Clear();
writeable.Fill();
}
explicit RegionManager() = default;
void SetCpuAddress(VAddr new_cpu_addr) {
cpu_addr = new_cpu_addr;
}
VAddr GetCpuAddr() const {
return cpu_addr;
}
static constexpr size_t SanitizeAddress(size_t address) {
return static_cast<size_t>(std::max<s64>(static_cast<s64>(address), 0LL));
}
template <Type type>
RegionBits& GetRegionBits() noexcept {
static_assert(type != Type::Writeable);
if constexpr (type == Type::CPU) {
return cpu;
} else if constexpr (type == Type::GPU) {
return gpu;
} else if constexpr (type == Type::Writeable) {
return writeable;
} else {
static_assert(false, "Invalid type");
}
}
template <Type type>
const RegionBits& GetRegionBits() const noexcept {
static_assert(type != Type::Writeable);
if constexpr (type == Type::CPU) {
return cpu;
} else if constexpr (type == Type::GPU) {
return gpu;
} else if constexpr (type == Type::Writeable) {
return writeable;
} else {
static_assert(false, "Invalid type");
}
}
/**
* Change the state of a range of pages
*
* @param dirty_addr Base address to mark or unmark as modified
* @param size Size in bytes to mark or unmark as modified
*/
template <Type type, bool enable>
void ChangeRegionState(u64 dirty_addr, u64 size) noexcept(type == Type::GPU) {
RENDERER_TRACE;
const size_t offset = dirty_addr - cpu_addr;
const size_t start_page = SanitizeAddress(offset) / BYTES_PER_PAGE;
const size_t end_page = Common::DivCeil(SanitizeAddress(offset + size), BYTES_PER_PAGE);
if (start_page >= NUM_REGION_PAGES || end_page <= start_page) {
return;
}
std::scoped_lock lk{lock};
static_assert(type != Type::Writeable);
RegionBits& bits = GetRegionBits<type>();
if constexpr (enable) {
bits.SetRange(start_page, end_page);
} else {
bits.UnsetRange(start_page, end_page);
}
if constexpr (type == Type::CPU) {
UpdateProtection<!enable>();
}
}
/**
* Loop over each page in the given range, turn off those bits and notify the tracker if
* needed. Call the given function on each turned off range.
*
* @param query_cpu_range Base CPU address to loop over
* @param size Size in bytes of the CPU range to loop over
* @param func Function to call for each turned off region
*/
template <Type type, bool clear>
void ForEachModifiedRange(VAddr query_cpu_range, s64 size, auto&& func) {
RENDERER_TRACE;
const size_t offset = query_cpu_range - cpu_addr;
const size_t start_page = SanitizeAddress(offset) / BYTES_PER_PAGE;
const size_t end_page = Common::DivCeil(SanitizeAddress(offset + size), BYTES_PER_PAGE);
if (start_page >= NUM_REGION_PAGES || end_page <= start_page) {
return;
}
std::scoped_lock lk{lock};
static_assert(type != Type::Writeable);
RegionBits& bits = GetRegionBits<type>();
RegionBits mask(bits, start_page, end_page);
// TODO: this will not be needed once we handle readbacks
if constexpr (type == Type::GPU) {
mask &= ~writeable;
}
for (const auto& [start, end] : mask) {
func(cpu_addr + start * BYTES_PER_PAGE, (end - start) * BYTES_PER_PAGE);
}
if constexpr (clear) {
bits.UnsetRange(start_page, end_page);
if constexpr (type == Type::CPU) {
UpdateProtection<true>();
}
}
}
/**
* Returns true when a region has been modified
*
* @param offset Offset in bytes from the start of the buffer
* @param size Size in bytes of the region to query for modifications
*/
template <Type type>
[[nodiscard]] bool IsRegionModified(u64 offset, u64 size) const noexcept {
RENDERER_TRACE;
const size_t start_page = SanitizeAddress(offset) / BYTES_PER_PAGE;
const size_t end_page = Common::DivCeil(SanitizeAddress(offset + size), BYTES_PER_PAGE);
if (start_page >= NUM_REGION_PAGES || end_page <= start_page) {
return false;
}
// std::scoped_lock lk{lock}; // Is this needed?
static_assert(type != Type::Writeable);
const RegionBits& bits = GetRegionBits<type>();
RegionBits test(bits, start_page, end_page);
// TODO: this will not be needed once we handle readbacks
if constexpr (type == Type::GPU) {
test &= ~writeable;
}
return test.Any();
}
private:
/**
* Notify tracker about changes in the CPU tracking state of a word in the buffer
*
* @param word_index Index to the word to notify to the tracker
* @param current_bits Current state of the word
* @param new_bits New state of the word
*
* @tparam add_to_tracker True when the tracker should start tracking the new pages
*/
template <bool add_to_tracker>
void UpdateProtection() {
RENDERER_TRACE;
RegionBits mask = cpu ^ writeable;
if (mask.None()) {
return; // No changes to the CPU tracking state
}
writeable = cpu;
tracker->UpdatePageWatchersForRegion<add_to_tracker>(cpu_addr, mask);
}
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
Common::AdaptiveMutex lock;
#else
Common::SpinLock lock;
#endif
PageManager* tracker;
VAddr cpu_addr = 0;
RegionBits cpu;
RegionBits gpu;
RegionBits writeable;
};
} // namespace VideoCore

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@ -1,296 +0,0 @@
// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
#include <mutex>
#include <span>
#include <utility>
#ifdef __linux__
#include "common/adaptive_mutex.h"
#else
#include "common/spin_lock.h"
#endif
#include "common/debug.h"
#include "common/types.h"
#include "video_core/page_manager.h"
namespace VideoCore {
constexpr u64 PAGES_PER_WORD = 64;
constexpr u64 BYTES_PER_PAGE = 4_KB;
constexpr u64 BYTES_PER_WORD = PAGES_PER_WORD * BYTES_PER_PAGE;
constexpr u64 HIGHER_PAGE_BITS = 22;
constexpr u64 HIGHER_PAGE_SIZE = 1ULL << HIGHER_PAGE_BITS;
constexpr u64 HIGHER_PAGE_MASK = HIGHER_PAGE_SIZE - 1ULL;
constexpr u64 NUM_REGION_WORDS = HIGHER_PAGE_SIZE / BYTES_PER_WORD;
enum class Type {
CPU,
GPU,
Untracked,
};
using WordsArray = std::array<u64, NUM_REGION_WORDS>;
/**
* Allows tracking CPU and GPU modification of pages in a contigious 4MB virtual address region.
* Information is stored in bitsets for spacial locality and fast update of single pages.
*/
class RegionManager {
public:
explicit RegionManager(PageManager* tracker_, VAddr cpu_addr_)
: tracker{tracker_}, cpu_addr{cpu_addr_} {
cpu.fill(~u64{0});
gpu.fill(0);
untracked.fill(~u64{0});
}
explicit RegionManager() = default;
void SetCpuAddress(VAddr new_cpu_addr) {
cpu_addr = new_cpu_addr;
}
VAddr GetCpuAddr() const {
return cpu_addr;
}
static constexpr u64 ExtractBits(u64 word, size_t page_start, size_t page_end) {
constexpr size_t number_bits = sizeof(u64) * 8;
const size_t limit_page_end = number_bits - std::min(page_end, number_bits);
u64 bits = (word >> page_start) << page_start;
bits = (bits << limit_page_end) >> limit_page_end;
return bits;
}
static constexpr std::pair<size_t, size_t> GetWordPage(VAddr address) {
const size_t converted_address = static_cast<size_t>(address);
const size_t word_number = converted_address / BYTES_PER_WORD;
const size_t amount_pages = converted_address % BYTES_PER_WORD;
return std::make_pair(word_number, amount_pages / BYTES_PER_PAGE);
}
template <typename Func>
void IterateWords(size_t offset, size_t size, Func&& func) const {
RENDERER_TRACE;
using FuncReturn = std::invoke_result_t<Func, std::size_t, u64>;
static constexpr bool BOOL_BREAK = std::is_same_v<FuncReturn, bool>;
const size_t start = static_cast<size_t>(std::max<s64>(static_cast<s64>(offset), 0LL));
const size_t end = static_cast<size_t>(std::max<s64>(static_cast<s64>(offset + size), 0LL));
if (start >= HIGHER_PAGE_SIZE || end <= start) {
return;
}
auto [start_word, start_page] = GetWordPage(start);
auto [end_word, end_page] = GetWordPage(end + BYTES_PER_PAGE - 1ULL);
constexpr size_t num_words = NUM_REGION_WORDS;
start_word = std::min(start_word, num_words);
end_word = std::min(end_word, num_words);
const size_t diff = end_word - start_word;
end_word += (end_page + PAGES_PER_WORD - 1ULL) / PAGES_PER_WORD;
end_word = std::min(end_word, num_words);
end_page += diff * PAGES_PER_WORD;
constexpr u64 base_mask{~0ULL};
for (size_t word_index = start_word; word_index < end_word; word_index++) {
const u64 mask = ExtractBits(base_mask, start_page, end_page);
start_page = 0;
end_page -= PAGES_PER_WORD;
if constexpr (BOOL_BREAK) {
if (func(word_index, mask)) {
return;
}
} else {
func(word_index, mask);
}
}
}
void IteratePages(u64 mask, auto&& func) const {
RENDERER_TRACE;
size_t offset = 0;
while (mask != 0) {
const size_t empty_bits = std::countr_zero(mask);
offset += empty_bits;
mask >>= empty_bits;
const size_t continuous_bits = std::countr_one(mask);
func(offset, continuous_bits);
mask = continuous_bits < PAGES_PER_WORD ? (mask >> continuous_bits) : 0;
offset += continuous_bits;
}
}
/**
* Change the state of a range of pages
*
* @param dirty_addr Base address to mark or unmark as modified
* @param size Size in bytes to mark or unmark as modified
*/
template <Type type, bool enable>
void ChangeRegionState(u64 dirty_addr, u64 size) noexcept(type == Type::GPU) {
std::scoped_lock lk{lock};
std::span<u64> state_words = Span<type>();
IterateWords(dirty_addr - cpu_addr, size, [&](size_t index, u64 mask) {
if constexpr (type == Type::CPU) {
UpdateProtection<!enable>(index, untracked[index], mask);
}
if constexpr (enable) {
state_words[index] |= mask;
if constexpr (type == Type::CPU) {
untracked[index] |= mask;
}
} else {
state_words[index] &= ~mask;
if constexpr (type == Type::CPU) {
untracked[index] &= ~mask;
}
}
});
}
/**
* Loop over each page in the given range, turn off those bits and notify the tracker if
* needed. Call the given function on each turned off range.
*
* @param query_cpu_range Base CPU address to loop over
* @param size Size in bytes of the CPU range to loop over
* @param func Function to call for each turned off region
*/
template <Type type, bool clear>
void ForEachModifiedRange(VAddr query_cpu_range, s64 size, auto&& func) {
RENDERER_TRACE;
std::scoped_lock lk{lock};
static_assert(type != Type::Untracked);
std::span<u64> state_words = Span<type>();
const size_t offset = query_cpu_range - cpu_addr;
bool pending = false;
size_t pending_offset{};
size_t pending_pointer{};
const auto release = [&]() {
func(cpu_addr + pending_offset * BYTES_PER_PAGE,
(pending_pointer - pending_offset) * BYTES_PER_PAGE);
};
IterateWords(offset, size, [&](size_t index, u64 mask) {
RENDERER_TRACE;
if constexpr (type == Type::GPU) {
mask &= ~untracked[index];
}
const u64 word = state_words[index] & mask;
if constexpr (clear) {
if constexpr (type == Type::CPU) {
UpdateProtection<true>(index, untracked[index], mask);
untracked[index] &= ~mask;
}
state_words[index] &= ~mask;
}
const size_t base_offset = index * PAGES_PER_WORD;
IteratePages(word, [&](size_t pages_offset, size_t pages_size) {
RENDERER_TRACE;
const auto reset = [&]() {
pending_offset = base_offset + pages_offset;
pending_pointer = base_offset + pages_offset + pages_size;
};
if (!pending) {
reset();
pending = true;
return;
}
if (pending_pointer == base_offset + pages_offset) {
pending_pointer += pages_size;
return;
}
release();
reset();
});
});
if (pending) {
release();
}
}
/**
* Returns true when a region has been modified
*
* @param offset Offset in bytes from the start of the buffer
* @param size Size in bytes of the region to query for modifications
*/
template <Type type>
[[nodiscard]] bool IsRegionModified(u64 offset, u64 size) const noexcept {
static_assert(type != Type::Untracked);
const std::span<const u64> state_words = Span<type>();
bool result = false;
IterateWords(offset, size, [&](size_t index, u64 mask) {
if constexpr (type == Type::GPU) {
mask &= ~untracked[index];
}
const u64 word = state_words[index] & mask;
if (word != 0) {
result = true;
return true;
}
return false;
});
return result;
}
private:
/**
* Notify tracker about changes in the CPU tracking state of a word in the buffer
*
* @param word_index Index to the word to notify to the tracker
* @param current_bits Current state of the word
* @param new_bits New state of the word
*
* @tparam add_to_tracker True when the tracker should start tracking the new pages
*/
template <bool add_to_tracker>
void UpdateProtection(u64 word_index, u64 current_bits, u64 new_bits) const {
RENDERER_TRACE;
constexpr s32 delta = add_to_tracker ? 1 : -1;
u64 changed_bits = (add_to_tracker ? current_bits : ~current_bits) & new_bits;
VAddr addr = cpu_addr + word_index * BYTES_PER_WORD;
IteratePages(changed_bits, [&](size_t offset, size_t size) {
tracker->UpdatePageWatchers<delta>(addr + offset * BYTES_PER_PAGE,
size * BYTES_PER_PAGE);
});
}
template <Type type>
std::span<u64> Span() noexcept {
if constexpr (type == Type::CPU) {
return cpu;
} else if constexpr (type == Type::GPU) {
return gpu;
} else if constexpr (type == Type::Untracked) {
return untracked;
}
}
template <Type type>
std::span<const u64> Span() const noexcept {
if constexpr (type == Type::CPU) {
return cpu;
} else if constexpr (type == Type::GPU) {
return gpu;
} else if constexpr (type == Type::Untracked) {
return untracked;
}
}
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
Common::AdaptiveMutex lock;
#else
Common::SpinLock lock;
#endif
PageManager* tracker;
VAddr cpu_addr = 0;
WordsArray cpu;
WordsArray gpu;
WordsArray untracked;
};
} // namespace VideoCore

View file

@ -48,19 +48,15 @@ struct PageManager::Impl {
u8 AddDelta() {
if constexpr (delta == 1) {
return ++num_watchers;
} else {
} else if constexpr (delta == -1) {
ASSERT_MSG(num_watchers > 0, "Not enough watchers");
return --num_watchers;
} else {
return num_watchers;
}
}
};
struct UpdateProtectRange {
VAddr addr;
u64 size;
Core::MemoryPermission perms;
};
static constexpr size_t ADDRESS_BITS = 40;
static constexpr size_t NUM_ADDRESS_PAGES = 1ULL << (40 - PAGE_BITS);
inline static Vulkan::Rasterizer* rasterizer;
@ -190,12 +186,9 @@ struct PageManager::Impl {
}
#endif
template <s32 delta>
template <bool track>
void UpdatePageWatchers(VAddr addr, u64 size) {
RENDERER_TRACE;
boost::container::small_vector<UpdateProtectRange, 16> update_ranges;
{
std::scoped_lock lk(lock);
size_t page = addr >> PAGE_BITS;
auto perms = cached_pages[page].Perm();
@ -205,40 +198,41 @@ struct PageManager::Impl {
const auto release_pending = [&] {
if (range_bytes > 0) {
RENDERER_TRACE;
// Add pending (un)protect action
update_ranges.push_back({range_begin << PAGE_BITS, range_bytes, perms});
// Perform pending (un)protect action
Protect(range_begin << PAGE_BITS, range_bytes, perms);
range_bytes = 0;
}
};
std::scoped_lock lk(lock);
// Iterate requested pages
const u64 page_end = Common::DivCeil(addr + size, PAGE_SIZE);
const u64 aligned_addr = page << PAGE_BITS;
const u64 aligned_end = page_end << PAGE_BITS;
ASSERT_MSG(rasterizer->IsMapped(aligned_addr, aligned_end - aligned_addr),
"Attempted to track non-GPU memory at address {:#x}, size {:#x}.",
aligned_addr, aligned_end - aligned_addr);
"Attempted to track non-GPU memory at address {:#x}, size {:#x}.", aligned_addr,
aligned_end - aligned_addr);
for (; page != page_end; ++page) {
PageState& state = cached_pages[page];
// Apply the change to the page state
const u8 new_count = state.AddDelta<delta>();
const u8 new_count = state.AddDelta<track ? 1 : -1>();
// If the protection changed add pending (un)protect action
if (auto new_perms = state.Perm(); new_perms != perms) [[unlikely]] {
// If the protection changed add pending (un)protect action
release_pending();
perms = new_perms;
} else if (range_bytes != 0) {
// If the protection did not change, extend the current range
range_bytes += PAGE_SIZE;
}
// If the page must be (un)protected, add it to the pending range
if ((new_count == 0 && delta < 0) || (new_count == 1 && delta > 0)) {
if (range_bytes == 0) {
// Only start a new range if the page must be (un)protected
if (range_bytes == 0 && ((new_count == 0 && !track) || (new_count == 1 && track))) {
range_begin = page;
}
range_bytes += PAGE_SIZE;
} else {
release_pending();
range_bytes = PAGE_SIZE;
}
}
@ -246,10 +240,68 @@ struct PageManager::Impl {
release_pending();
}
// Flush deferred protects
for (const auto& range : update_ranges) {
Protect(range.addr, range.size, range.perms);
template <bool track>
void UpdatePageWatchersForRegion(VAddr base_addr, RegionBits& mask) {
RENDERER_TRACE;
auto start_range = mask.FirstRange();
auto end_range = mask.LastRange();
if (start_range.second == end_range.second) {
// Optimization: if all pages are contiguous, use the regular UpdatePageWatchers
const VAddr start_addr = base_addr + (start_range.first << PAGE_BITS);
const u64 size = (start_range.second - start_range.first) << PAGE_BITS;
UpdatePageWatchers<track>(start_addr, size);
return;
}
size_t base_page = (base_addr >> PAGE_BITS);
auto perms = cached_pages[base_page + start_range.first].Perm();
u64 range_begin = 0;
u64 range_bytes = 0;
const auto release_pending = [&] {
if (range_bytes > 0) {
RENDERER_TRACE;
// Perform pending (un)protect action
Protect((range_begin << PAGE_BITS), range_bytes, perms);
range_bytes = 0;
}
};
std::scoped_lock lk(lock);
// Iterate pages
for (size_t page = start_range.first; page < end_range.second; ++page) {
PageState& state = cached_pages[base_page + page];
const bool update = mask.Get(page);
// Apply the change to the page state
const u8 new_count = update ? state.AddDelta<track ? 1 : -1>() : state.AddDelta<0>();
if (auto new_perms = state.Perm(); new_perms != perms) [[unlikely]] {
// If the protection changed add pending (un)protect action
release_pending();
perms = new_perms;
} else if (range_bytes != 0) {
// If the protection did not change, extend the current range
range_bytes += PAGE_SIZE;
}
// If the page is not being updated, skip it
if (!update) {
continue;
}
// Only start a new range if the page must be (un)protected
if (range_bytes == 0 && ((new_count == 0 && !track) || (new_count == 1 && track))) {
range_begin = base_page + page;
range_bytes = PAGE_SIZE;
}
}
// Add pending (un)protect action
release_pending();
}
std::array<PageState, NUM_ADDRESS_PAGES> cached_pages{};
@ -273,12 +325,21 @@ void PageManager::OnGpuUnmap(VAddr address, size_t size) {
impl->OnUnmap(address, size);
}
template <s32 delta>
template <bool track>
void PageManager::UpdatePageWatchers(VAddr addr, u64 size) const {
impl->UpdatePageWatchers<delta>(addr, size);
impl->UpdatePageWatchers<track>(addr, size);
}
template void PageManager::UpdatePageWatchers<1>(VAddr addr, u64 size) const;
template void PageManager::UpdatePageWatchers<-1>(VAddr addr, u64 size) const;
template <bool track>
void PageManager::UpdatePageWatchersForRegion(VAddr base_addr, RegionBits& mask) const {
impl->UpdatePageWatchersForRegion<track>(base_addr, mask);
}
template void PageManager::UpdatePageWatchers<true>(VAddr addr, u64 size) const;
template void PageManager::UpdatePageWatchers<false>(VAddr addr, u64 size) const;
template void PageManager::UpdatePageWatchersForRegion<true>(VAddr base_addr,
RegionBits& mask) const;
template void PageManager::UpdatePageWatchersForRegion<false>(VAddr base_addr,
RegionBits& mask) const;
} // namespace VideoCore

View file

@ -6,6 +6,7 @@
#include <memory>
#include "common/alignment.h"
#include "common/types.h"
#include "video_core/buffer_cache//region_definitions.h"
namespace Vulkan {
class Rasterizer;
@ -28,9 +29,14 @@ public:
void OnGpuUnmap(VAddr address, size_t size);
/// Updates watches in the pages touching the specified region.
template <s32 delta>
template <bool track>
void UpdatePageWatchers(VAddr addr, u64 size) const;
/// Updates watches in the pages touching the specified region
/// using a mask.
template <bool track>
void UpdatePageWatchersForRegion(VAddr base_addr, RegionBits& mask) const;
/// Returns page aligned address.
static constexpr VAddr GetPageAddr(VAddr addr) {
return Common::AlignDown(addr, PAGE_SIZE);

View file

@ -761,7 +761,7 @@ void TextureCache::UntrackImage(ImageId image_id) {
image.track_addr = 0;
image.track_addr_end = 0;
if (size != 0) {
tracker.UpdatePageWatchers<-1>(addr, size);
tracker.UpdatePageWatchers<false>(addr, size);
}
}
@ -780,7 +780,7 @@ void TextureCache::UntrackImageHead(ImageId image_id) {
// Cehck its hash later.
MarkAsMaybeDirty(image_id, image);
}
tracker.UpdatePageWatchers<-1>(image_begin, size);
tracker.UpdatePageWatchers<false>(image_begin, size);
}
void TextureCache::UntrackImageTail(ImageId image_id) {
@ -799,7 +799,7 @@ void TextureCache::UntrackImageTail(ImageId image_id) {
// Cehck its hash later.
MarkAsMaybeDirty(image_id, image);
}
tracker.UpdatePageWatchers<-1>(addr, size);
tracker.UpdatePageWatchers<false>(addr, size);
}
void TextureCache::DeleteImage(ImageId image_id) {