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https://github.com/ryujinx-mirror/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>
191 lines
6 KiB
C#
191 lines
6 KiB
C#
using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.Memory;
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using System;
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using System.Diagnostics;
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namespace Ryujinx.HLE.HOS.Kernel.Memory
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{
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class KPageTable : KPageTableBase
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{
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private readonly IVirtualMemoryManager _cpuMemory;
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public KPageTable(KernelContext context, IVirtualMemoryManager cpuMemory) : base(context)
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{
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_cpuMemory = cpuMemory;
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}
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/// <inheritdoc/>
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protected override void GetPhysicalRegions(ulong va, ulong size, KPageList pageList)
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{
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var ranges = _cpuMemory.GetPhysicalRegions(va, size);
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foreach (var range in ranges)
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{
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pageList.AddRange(range.Address + DramMemoryMap.DramBase, range.Size / PageSize);
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}
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}
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/// <inheritdoc/>
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protected override ReadOnlySpan<byte> GetSpan(ulong va, int size)
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{
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return _cpuMemory.GetSpan(va, size);
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}
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/// <inheritdoc/>
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protected override KernelResult MapMemory(ulong src, ulong dst, ulong pagesCount, KMemoryPermission oldSrcPermission, KMemoryPermission newDstPermission)
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{
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KPageList pageList = new KPageList();
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GetPhysicalRegions(src, pagesCount * PageSize, pageList);
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KernelResult result = Reprotect(src, pagesCount, KMemoryPermission.None);
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if (result != KernelResult.Success)
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{
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return result;
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}
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result = MapPages(dst, pageList, newDstPermission, false, 0);
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if (result != KernelResult.Success)
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{
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KernelResult reprotectResult = Reprotect(src, pagesCount, oldSrcPermission);
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Debug.Assert(reprotectResult == KernelResult.Success);
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}
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return result;
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}
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/// <inheritdoc/>
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protected override KernelResult UnmapMemory(ulong dst, ulong src, ulong pagesCount, KMemoryPermission oldDstPermission, KMemoryPermission newSrcPermission)
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{
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ulong size = pagesCount * PageSize;
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KPageList srcPageList = new KPageList();
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KPageList dstPageList = new KPageList();
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GetPhysicalRegions(src, size, srcPageList);
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GetPhysicalRegions(dst, size, dstPageList);
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if (!dstPageList.IsEqual(srcPageList))
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{
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return KernelResult.InvalidMemRange;
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}
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KernelResult result = Unmap(dst, pagesCount);
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if (result != KernelResult.Success)
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{
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return result;
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}
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result = Reprotect(src, pagesCount, newSrcPermission);
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if (result != KernelResult.Success)
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{
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KernelResult mapResult = MapPages(dst, dstPageList, oldDstPermission, false, 0);
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Debug.Assert(mapResult == KernelResult.Success);
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}
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return result;
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}
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/// <inheritdoc/>
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protected override KernelResult MapPages(ulong dstVa, ulong pagesCount, ulong srcPa, KMemoryPermission permission, bool shouldFillPages, byte fillValue)
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{
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ulong size = pagesCount * PageSize;
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Context.Memory.Commit(srcPa - DramMemoryMap.DramBase, size);
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_cpuMemory.Map(dstVa, srcPa - DramMemoryMap.DramBase, size);
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if (DramMemoryMap.IsHeapPhysicalAddress(srcPa))
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{
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Context.MemoryManager.IncrementPagesReferenceCount(srcPa, pagesCount);
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}
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if (shouldFillPages)
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{
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_cpuMemory.Fill(dstVa, size, fillValue);
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}
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return KernelResult.Success;
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}
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/// <inheritdoc/>
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protected override KernelResult MapPages(ulong address, KPageList pageList, KMemoryPermission permission, bool shouldFillPages, byte fillValue)
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{
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using var scopedPageList = new KScopedPageList(Context.MemoryManager, pageList);
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ulong currentVa = address;
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foreach (var pageNode in pageList)
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{
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ulong addr = pageNode.Address - DramMemoryMap.DramBase;
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ulong size = pageNode.PagesCount * PageSize;
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Context.Memory.Commit(addr, size);
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_cpuMemory.Map(currentVa, addr, size);
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if (shouldFillPages)
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{
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_cpuMemory.Fill(currentVa, size, fillValue);
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}
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currentVa += size;
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}
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scopedPageList.SignalSuccess();
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return KernelResult.Success;
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}
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/// <inheritdoc/>
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protected override KernelResult Unmap(ulong address, ulong pagesCount)
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{
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KPageList pagesToClose = new KPageList();
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var regions = _cpuMemory.GetPhysicalRegions(address, pagesCount * PageSize);
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foreach (var region in regions)
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{
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ulong pa = region.Address + DramMemoryMap.DramBase;
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if (DramMemoryMap.IsHeapPhysicalAddress(pa))
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{
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pagesToClose.AddRange(pa, region.Size / PageSize);
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}
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}
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_cpuMemory.Unmap(address, pagesCount * PageSize);
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pagesToClose.DecrementPagesReferenceCount(Context.MemoryManager);
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return KernelResult.Success;
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}
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/// <inheritdoc/>
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protected override KernelResult Reprotect(ulong address, ulong pagesCount, KMemoryPermission permission)
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{
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// TODO.
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return KernelResult.Success;
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}
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/// <inheritdoc/>
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protected override KernelResult ReprotectWithAttributes(ulong address, ulong pagesCount, KMemoryPermission permission)
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{
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// TODO.
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return KernelResult.Success;
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}
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/// <inheritdoc/>
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protected override void SignalMemoryTracking(ulong va, ulong size, bool write)
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{
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_cpuMemory.SignalMemoryTracking(va, size, write);
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}
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/// <inheritdoc/>
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protected override void Write(ulong va, ReadOnlySpan<byte> data)
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{
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_cpuMemory.Write(va, data);
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}
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}
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}
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