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https://github.com/Ryujinx/Ryujinx.git
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95017b8c66
* Back to the origins: Make memory manager take guest PA rather than host address once again * Direct mapping with alias support on Windows * Fixes and remove more of the emulated shared memory * Linux support * Make shared and transfer memory not depend on SharedMemoryStorage * More efficient view mapping on Windows (no more restricted to 4KB pages at a time) * Handle potential access violations caused by partial unmap * Implement host mapping using shared memory on Linux * Add new GetPhysicalAddressChecked method, used to ensure the virtual address is mapped before address translation Also align GetRef behaviour with software memory manager * We don't need a mirrorable memory block for software memory manager mode * Disable memory aliasing tests while we don't have shared memory support on Mac * Shared memory & SIGBUS handler for macOS * Fix typo + nits + re-enable memory tests * Set MAP_JIT_DARWIN on x86 Mac too * Add back the address space mirror * Only set MAP_JIT_DARWIN if we are mapping as executable * Disable aliasing tests again (still fails on Mac) * Fix UnmapView4KB (by not casting size to int) * Use ref counting on memory blocks to delay closing the shared memory handle until all blocks using it are disposed * Address PR feedback * Make RO hold a reference to the guest process memory manager to avoid early disposal Co-authored-by: nastys <nastys@users.noreply.github.com>
63 lines
No EOL
2 KiB
C#
63 lines
No EOL
2 KiB
C#
using Ryujinx.Common;
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using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.HLE.HOS.Kernel.Process;
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namespace Ryujinx.HLE.HOS.Kernel.Memory
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{
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class KSharedMemory : KAutoObject
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{
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private readonly KPageList _pageList;
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private readonly ulong _ownerPid;
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private readonly KMemoryPermission _ownerPermission;
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private readonly KMemoryPermission _userPermission;
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public KSharedMemory(
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KernelContext context,
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SharedMemoryStorage storage,
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ulong ownerPid,
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KMemoryPermission ownerPermission,
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KMemoryPermission userPermission) : base(context)
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{
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_pageList = storage.GetPageList();
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_ownerPid = ownerPid;
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_ownerPermission = ownerPermission;
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_userPermission = userPermission;
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}
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public KernelResult MapIntoProcess(
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KPageTableBase memoryManager,
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ulong address,
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ulong size,
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KProcess process,
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KMemoryPermission permission)
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{
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if (_pageList.GetPagesCount() != BitUtils.DivRoundUp(size, KPageTableBase.PageSize))
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{
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return KernelResult.InvalidSize;
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}
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KMemoryPermission expectedPermission = process.Pid == _ownerPid
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? _ownerPermission
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: _userPermission;
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if (permission != expectedPermission)
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{
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return KernelResult.InvalidPermission;
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}
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return memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission);
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}
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public KernelResult UnmapFromProcess(KPageTableBase memoryManager, ulong address, ulong size, KProcess process)
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{
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if (_pageList.GetPagesCount() != BitUtils.DivRoundUp(size, KPageTableBase.PageSize))
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{
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return KernelResult.InvalidSize;
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}
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return memoryManager.UnmapPages(address, _pageList, MemoryState.SharedMemory);
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}
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}
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} |