add libusb to openbsd deps

Signed-off-by: crueter <crueter@eden-emu.dev>

src/common/host_memory.cpp

@@ -598,17 +598,12 @@ public:
 
     bool ClearBackingRegion(size_t physical_offset, size_t length) {
 #ifdef __linux__
-        // Only incur syscall cost IF memset would be slower (theshold = 16MiB)
-        // TODO(lizzie): Smarter way to dynamically get this threshold (broadwell != raptor lake) for example
-        if (length >= 2097152UL * 8) {
-            // Set MADV_REMOVE on backing map to destroy it instantly.
-            // This also deletes the area from the backing file.
-            int ret = madvise(backing_base + physical_offset, length, MADV_REMOVE);
-            ASSERT_MSG(ret == 0, "madvise failed: {}", strerror(errno));
-            return true;
-        } else {
-            return false;
-        }
+        // Set MADV_REMOVE on backing map to destroy it instantly.
+        // This also deletes the area from the backing file.
+        int ret = madvise(backing_base + physical_offset, length, MADV_REMOVE);
+        ASSERT_MSG(ret == 0, "madvise failed: {}", strerror(errno));
+
+        return true;
 #else
         return false;
 #endif

src/core/CMakeLists.txt

@@ -107,6 +107,7 @@ add_library(core STATIC
     file_sys/fssystem/fssystem_nca_header.cpp
     file_sys/fssystem/fssystem_nca_header.h
     file_sys/fssystem/fssystem_nca_reader.cpp
+    file_sys/fssystem/fssystem_passthrough_storage.h
     file_sys/fssystem/fssystem_pooled_buffer.cpp
     file_sys/fssystem/fssystem_pooled_buffer.h
     file_sys/fssystem/fssystem_sparse_storage.cpp

src/core/file_sys/fssystem/fssystem_bucket_tree.cpp

@@ -4,6 +4,7 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include "common/settings.h"
 #include "core/file_sys/errors.h"
 #include "core/file_sys/fssystem/fssystem_bucket_tree.h"
 #include "core/file_sys/fssystem/fssystem_bucket_tree_utils.h"

src/core/file_sys/fssystem/fssystem_nca_file_system_driver.cpp

@@ -4,6 +4,7 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include "common/settings.h"
 #include "core/file_sys/fssystem/fssystem_aes_ctr_counter_extended_storage.h"
 #include "core/file_sys/fssystem/fssystem_aes_ctr_storage.h"
 #include "core/file_sys/fssystem/fssystem_aes_xts_storage.h"
@@ -13,6 +14,7 @@
 #include "core/file_sys/fssystem/fssystem_hierarchical_sha256_storage.h"
 #include "core/file_sys/fssystem/fssystem_indirect_storage.h"
 #include "core/file_sys/fssystem/fssystem_integrity_romfs_storage.h"
+#include "core/file_sys/fssystem/fssystem_passthrough_storage.h"
 #include "core/file_sys/fssystem/fssystem_memory_resource_buffer_hold_storage.h"
 #include "core/file_sys/fssystem/fssystem_nca_file_system_driver.h"
 #include "core/file_sys/fssystem/fssystem_sparse_storage.h"

src/core/file_sys/fssystem/fssystem_nca_header.cpp

@@ -13,11 +13,13 @@ u8 NcaHeader::GetProperKeyGeneration() const {
 }
 
 bool NcaPatchInfo::HasIndirectTable() const {
-    return this->indirect_size != 0;
+    static constexpr unsigned char BKTR[4] = {'B', 'K', 'T', 'R'};
+    return std::memcmp(indirect_header.data(), BKTR, sizeof(BKTR)) == 0;
 }
 
 bool NcaPatchInfo::HasAesCtrExTable() const {
-    return this->aes_ctr_ex_size != 0;
+    static constexpr unsigned char BKTR[4] = {'B', 'K', 'T', 'R'};
+    return std::memcmp(aes_ctr_ex_header.data(), BKTR, sizeof(BKTR)) == 0;
 }
 
 } // namespace FileSys

src/core/file_sys/fssystem/fssystem_passthrough_storage.h

@@ -0,0 +1,32 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+#include "core/file_sys/fssystem/fs_i_storage.h"
+#include "core/file_sys/vfs/vfs.h"
+
+namespace FileSys {
+
+//TODO: No integrity verification.
+class PassthroughStorage final : public IReadOnlyStorage {
+    YUZU_NON_COPYABLE(PassthroughStorage);
+    YUZU_NON_MOVEABLE(PassthroughStorage);
+
+public:
+    explicit PassthroughStorage(VirtualFile base) : base_(std::move(base)) {}
+    ~PassthroughStorage() override = default;
+
+    size_t Read(u8* buffer, size_t size, size_t offset) const override {
+        if (!base_ || size == 0)
+            return 0;
+        return base_->Read(buffer, size, offset);
+    }
+    size_t GetSize() const override {
+        return base_ ? base_->GetSize() : 0;
+    }
+
+private:
+    VirtualFile base_{};
+};
+
+} // namespace FileSys

src/video_core/vulkan_common/vulkan_memory_allocator.cpp

@@ -49,9 +49,6 @@ namespace Vulkan {
         }
 
         [[nodiscard]] VkMemoryPropertyFlags MemoryUsagePreferredVmaFlags(MemoryUsage usage) {
-            if (usage == MemoryUsage::Download) {
-                return VK_MEMORY_PROPERTY_HOST_CACHED_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
-            }
             return usage != MemoryUsage::DeviceLocal ? VK_MEMORY_PROPERTY_HOST_COHERENT_BIT
                                                      : VkMemoryPropertyFlagBits{};
         }