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Fix inter-process data copy on non-contiguous physical regions (#1988)

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gdkchan 2021-02-07 20:54:49 -03:00 committed by GitHub
parent 40797a1283
commit 5ea7d77981
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1 changed files with 26 additions and 8 deletions
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24
Ryujinx.HLE/HOS/Kernel/Memory/KMemoryManager.cs
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@ -1506,15 +1506,33 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
serverAddress = currentProcess.MemoryManager.GetDramAddressFromVa(serverAddress);
while (size > 0)
{
ulong copySize = Math.Min(PageSize - (serverAddress & (PageSize - 1)), PageSize - (clientAddress & (PageSize - 1)));
if (copySize > size)
{
copySize = size;
}
ulong serverDramAddr = currentProcess.MemoryManager.GetDramAddressFromVa(serverAddress);
ulong clientDramAddr = GetDramAddressFromVa(clientAddress);
if (serverDramAddr != clientDramAddr)
{
if (toServer)
{
_context.Memory.Copy(serverAddress, GetDramAddressFromVa(clientAddress), size);
_context.Memory.Copy(serverDramAddr, clientDramAddr, copySize);
}
else
{
_context.Memory.Copy(GetDramAddressFromVa(clientAddress), serverAddress, size);
_context.Memory.Copy(clientDramAddr, serverDramAddr, copySize);
}
}
serverAddress += copySize;
clientAddress += copySize;
size -= copySize;
}
return KernelResult.Success;