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Support memory aliasing (#2954)

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* 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>
This commit is contained in:
gdkchan 2022-05-02 20:30:02 -03:00 • committed by GitHub
parent 4a892fbdc9
commit 95017b8c66
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41 changed files with 2373 additions and 2155 deletions
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64
Ryujinx.HLE/HOS/Kernel/Memory/SharedMemoryStorage.cs
View file

@ -1,8 +1,4 @@
using Ryujinx.HLE.HOS.Kernel.Process;
using Ryujinx.Memory;
using Ryujinx.Memory.Range;
using System;
using System.Collections.Generic;
using System;
namespace Ryujinx.HLE.HOS.Kernel.Memory
{
@ -12,9 +8,6 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
private readonly KPageList _pageList;
private readonly ulong _size;
private IVirtualMemoryManager _borrowerMemory;
private ulong _borrowerVa;
public SharedMemoryStorage(KernelContext context, KPageList pageList)
{
_context = context;
@ -29,24 +22,6 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
}
}
public void Borrow(KProcess dstProcess, ulong va)
{
ulong currentOffset = 0;
foreach (KPageNode pageNode in _pageList)
{
ulong address = pageNode.Address - DramMemoryMap.DramBase;
ulong size = pageNode.PagesCount * KPageTableBase.PageSize;
dstProcess.CpuMemory.Write(va + currentOffset, _context.Memory.GetSpan(address + currentOffset, (int)size));
currentOffset += size;
}
_borrowerMemory = dstProcess.CpuMemory;
_borrowerVa = va;
}
public void ZeroFill()
{
for (ulong offset = 0; offset < _size; offset += sizeof(ulong))
@ -57,42 +32,13 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
public ref T GetRef<T>(ulong offset) where T : unmanaged
{
if (_borrowerMemory == null)
if (_pageList.Nodes.Count == 1)
{
if (_pageList.Nodes.Count == 1)
{
ulong address = _pageList.Nodes.First.Value.Address - DramMemoryMap.DramBase;
return ref _context.Memory.GetRef<T>(address + offset);
}
throw new NotImplementedException("Non-contiguous shared memory is not yet supported.");
ulong address = _pageList.Nodes.First.Value.Address - DramMemoryMap.DramBase;
return ref _context.Memory.GetRef<T>(address + offset);
}
else
{
return ref _borrowerMemory.GetRef<T>(_borrowerVa + offset);
}
}
public IEnumerable<HostMemoryRange> GetRanges()
{
if (_borrowerMemory == null)
{
var ranges = new List<HostMemoryRange>();
foreach (KPageNode pageNode in _pageList)
{
ulong address = pageNode.Address - DramMemoryMap.DramBase;
ulong size = pageNode.PagesCount * KPageTableBase.PageSize;
ranges.Add(new HostMemoryRange(_context.Memory.GetPointer(address, size), size));
}
return ranges;
}
else
{
return _borrowerMemory.GetPhysicalRegions(_borrowerVa, _size);
}
throw new NotImplementedException("Non-contiguous shared memory is not yet supported.");
}
public KPageList GetPageList()