From 8ad5f2c50648c333c3c46f89533e200a39bf6ca8 Mon Sep 17 00:00:00 2001 From: Liam Date: Wed, 13 Dec 2023 15:32:25 -0500 Subject: common: use memory holepunching when clearing memory --- src/core/hle/kernel/k_memory_manager.cpp | 5 +++-- src/core/hle/kernel/k_page_table_base.cpp | 14 ++++++++------ 2 files changed, 11 insertions(+), 8 deletions(-) (limited to 'src/core/hle/kernel') diff --git a/src/core/hle/kernel/k_memory_manager.cpp b/src/core/hle/kernel/k_memory_manager.cpp index 0a973ec8c..d6bd27296 100644 --- a/src/core/hle/kernel/k_memory_manager.cpp +++ b/src/core/hle/kernel/k_memory_manager.cpp @@ -421,8 +421,9 @@ Result KMemoryManager::AllocateForProcess(KPageGroup* out, size_t num_pages, u32 } else { // Set all the allocated memory. for (const auto& block : *out) { - std::memset(m_system.DeviceMemory().GetPointer(block.GetAddress()), fill_pattern, - block.GetSize()); + m_system.DeviceMemory().buffer.ClearBackingRegion(GetInteger(block.GetAddress()) - + Core::DramMemoryMap::Base, + block.GetSize(), fill_pattern); } } diff --git a/src/core/hle/kernel/k_page_table_base.cpp b/src/core/hle/kernel/k_page_table_base.cpp index 4c416d809..423289145 100644 --- a/src/core/hle/kernel/k_page_table_base.cpp +++ b/src/core/hle/kernel/k_page_table_base.cpp @@ -81,6 +81,11 @@ void InvalidateInstructionCache(KernelCore& kernel, AddressType addr, u64 size) } } +void ClearBackingRegion(Core::System& system, KPhysicalAddress addr, u64 size, u32 fill_value) { + system.DeviceMemory().buffer.ClearBackingRegion(GetInteger(addr) - Core::DramMemoryMap::Base, + size, fill_value); +} + template Result InvalidateDataCache(AddressType addr, u64 size) { R_SUCCEED(); @@ -1363,8 +1368,7 @@ Result KPageTableBase::MapInsecureMemory(KProcessAddress address, size_t size) { // Clear all the newly allocated pages. for (const auto& it : pg) { - std::memset(GetHeapVirtualPointer(m_kernel, it.GetAddress()), - static_cast(m_heap_fill_value), it.GetSize()); + ClearBackingRegion(m_system, it.GetAddress(), it.GetSize(), m_heap_fill_value); } // Lock the table. @@ -1570,8 +1574,7 @@ Result KPageTableBase::AllocateAndMapPagesImpl(PageLinkedList* page_list, KProce // Clear all pages. for (const auto& it : pg) { - std::memset(GetHeapVirtualPointer(m_kernel, it.GetAddress()), - static_cast(m_heap_fill_value), it.GetSize()); + ClearBackingRegion(m_system, it.GetAddress(), it.GetSize(), m_heap_fill_value); } // Map the pages. @@ -2159,8 +2162,7 @@ Result KPageTableBase::SetHeapSize(KProcessAddress* out, size_t size) { // Clear all the newly allocated pages. for (const auto& it : pg) { - std::memset(GetHeapVirtualPointer(m_kernel, it.GetAddress()), m_heap_fill_value, - it.GetSize()); + ClearBackingRegion(m_system, it.GetAddress(), it.GetSize(), m_heap_fill_value); } // Map the pages. -- cgit v1.2.3