Add alternative "GL" enum values for StencilOp (#3321)

This PR adds the alternative enum values for StencilOp. Similar to the other enums, I added these with the same names but with Gl added to the end. These are used by homebrew using Nouveau, though they might be used by games with the official Vulkan driver.

39d90be897/rnndb/graph/nv_3ddefs.xml (L77)

Fixes some broken graphics in Citra, such as missing shadows in Mario Kart 7. Likely fixes other homebrew.

.github/workflows/build.yml

@@ -46,6 +46,7 @@ jobs:
     env:
       POWERSHELL_TELEMETRY_OPTOUT: 1
       DOTNET_CLI_TELEMETRY_OPTOUT: 1
+      RYUJINX_BASE_VERSION: "1.1.0"
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-dotnet@v1
@@ -59,24 +60,24 @@ jobs:
       - name: Clear
         run: dotnet clean && dotnet nuget locals all --clear
       - name: Build
-        run: dotnet build -c "${{ matrix.configuration }}" /p:Version="1.1.0" /p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" /p:ExtraDefineConstants=DISABLE_UPDATER
+        run: dotnet build -c "${{ matrix.configuration }}" /p:Version="${{ env.RYUJINX_BASE_VERSION }}" /p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" /p:ExtraDefineConstants=DISABLE_UPDATER
       - name: Test
         run: dotnet test -c "${{ matrix.configuration }}"
       - name: Publish Ryujinx
-        run: dotnet publish -c "${{ matrix.configuration }}" -r "${{ matrix.DOTNET_RUNTIME_IDENTIFIER }}" -o ./publish /p:Version="1.1.0" /p:DebugType=embedded /p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" /p:ExtraDefineConstants=DISABLE_UPDATER Ryujinx --self-contained
+        run: dotnet publish -c "${{ matrix.configuration }}" -r "${{ matrix.DOTNET_RUNTIME_IDENTIFIER }}" -o ./publish /p:Version="${{ env.RYUJINX_BASE_VERSION }}" /p:DebugType=embedded /p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" /p:ExtraDefineConstants=DISABLE_UPDATER Ryujinx --self-contained
         if: github.event_name == 'pull_request'
       - name: Publish Ryujinx.Headless.SDL2
-        run: dotnet publish -c "${{ matrix.configuration }}" -r "${{ matrix.DOTNET_RUNTIME_IDENTIFIER }}" -o ./publish_sdl2_headless /p:Version="1.1.0" /p:DebugType=embedded /p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" /p:ExtraDefineConstants=DISABLE_UPDATER Ryujinx.Headless.SDL2 --self-contained
+        run: dotnet publish -c "${{ matrix.configuration }}" -r "${{ matrix.DOTNET_RUNTIME_IDENTIFIER }}" -o ./publish_sdl2_headless /p:Version="${{ env.RYUJINX_BASE_VERSION }}" /p:DebugType=embedded /p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" /p:ExtraDefineConstants=DISABLE_UPDATER Ryujinx.Headless.SDL2 --self-contained
         if: github.event_name == 'pull_request'
       - name: Upload Ryujinx artifact
         uses: actions/upload-artifact@v2
         with:
-          name: ryujinx-${{ matrix.configuration }}-1.0.0+${{ steps.git_short_hash.outputs.result }}-${{ matrix.RELEASE_ZIP_OS_NAME }}
+          name: ryujinx-${{ matrix.configuration }}-${{ env.RYUJINX_BASE_VERSION }}+${{ steps.git_short_hash.outputs.result }}-${{ matrix.RELEASE_ZIP_OS_NAME }}
           path: publish
         if: github.event_name == 'pull_request'
       - name: Upload Ryujinx.Headless.SDL2 artifact
         uses: actions/upload-artifact@v2
         with:
-          name: ryujinx-headless-sdl2-${{ matrix.configuration }}-1.0.0+${{ steps.git_short_hash.outputs.result }}-${{ matrix.RELEASE_ZIP_OS_NAME }}
+          name: ryujinx-headless-sdl2-${{ matrix.configuration }}-${{ env.RYUJINX_BASE_VERSION }}+${{ steps.git_short_hash.outputs.result }}-${{ matrix.RELEASE_ZIP_OS_NAME }}
           path: publish_sdl2_headless
         if: github.event_name == 'pull_request'

Ryujinx.Graphics.GAL/StencilOp.cs

@@ -9,6 +9,15 @@ namespace Ryujinx.Graphics.GAL
         DecrementAndClamp,
         Invert,
         IncrementAndWrap,
-        DecrementAndWrap
+        DecrementAndWrap,
+
+        ZeroGl              = 0x0,
+        InvertGl            = 0x150a,
+        KeepGl              = 0x1e00,
+        ReplaceGl           = 0x1e01,
+        IncrementAndClampGl = 0x1e02,
+        DecrementAndClampGl = 0x1e03,
+        IncrementAndWrapGl  = 0x8507,
+        DecrementAndWrapGl  = 0x8508
     }
 }

Ryujinx.Graphics.OpenGL/EnumConversion.cs

@@ -379,20 +379,28 @@ namespace Ryujinx.Graphics.OpenGL
             switch (op)
             {
                 case GAL.StencilOp.Keep:
+                case GAL.StencilOp.KeepGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.Keep;
                 case GAL.StencilOp.Zero:
+                case GAL.StencilOp.ZeroGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.Zero;
                 case GAL.StencilOp.Replace:
+                case GAL.StencilOp.ReplaceGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.Replace;
                 case GAL.StencilOp.IncrementAndClamp:
+                case GAL.StencilOp.IncrementAndClampGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.Incr;
                 case GAL.StencilOp.DecrementAndClamp:
+                case GAL.StencilOp.DecrementAndClampGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.Decr;
                 case GAL.StencilOp.Invert:
+                case GAL.StencilOp.InvertGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.Invert;
                 case GAL.StencilOp.IncrementAndWrap:
+                case GAL.StencilOp.IncrementAndWrapGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.IncrWrap;
                 case GAL.StencilOp.DecrementAndWrap:
+                case GAL.StencilOp.DecrementAndWrapGl:
                     return OpenTK.Graphics.OpenGL.StencilOp.DecrWrap;
             }
 

Ryujinx.HLE/HOS/ApplicationLoader.cs

@@ -24,6 +24,7 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Reflection;
+using System.Text;
 
 using static LibHac.Fs.ApplicationSaveDataManagement;
 using static Ryujinx.HLE.HOS.ModLoader;
@@ -86,8 +87,8 @@ namespace Ryujinx.HLE.HOS
             MetaLoader metaData = ReadNpdm(codeFs);
 
             _device.Configuration.VirtualFileSystem.ModLoader.CollectMods(
-                new[] { TitleId }, 
-                _device.Configuration.VirtualFileSystem.ModLoader.GetModsBasePath(), 
+                new[] { TitleId },
+                _device.Configuration.VirtualFileSystem.ModLoader.GetModsBasePath(),
                 _device.Configuration.VirtualFileSystem.ModLoader.GetSdModsBasePath());
 
             if (TitleId != 0)
@@ -308,6 +309,94 @@ namespace Ryujinx.HLE.HOS
             LoadNca(nca, null, null);
         }
 
+        public void LoadServiceNca(string ncaFile)
+        {
+            // Disable PPTC here as it does not support multiple processes running.
+            // TODO: This should be eventually removed and it should stop using global state and
+            // instead manage the cache per process.
+            Ptc.Close();
+            PtcProfiler.Stop();
+
+            FileStream file = new FileStream(ncaFile, FileMode.Open, FileAccess.Read);
+            Nca mainNca = new Nca(_device.Configuration.VirtualFileSystem.KeySet, file.AsStorage(false));
+
+            if (mainNca.Header.ContentType != NcaContentType.Program)
+            {
+                Logger.Error?.Print(LogClass.Loader, "Selected NCA is not a \"Program\" NCA");
+
+                return;
+            }
+
+            IFileSystem codeFs = null;
+
+            if (mainNca.CanOpenSection(NcaSectionType.Code))
+            {
+                codeFs = mainNca.OpenFileSystem(NcaSectionType.Code, _device.System.FsIntegrityCheckLevel);
+            }
+
+            if (codeFs == null)
+            {
+                Logger.Error?.Print(LogClass.Loader, "No ExeFS found in NCA");
+
+                return;
+            }
+
+            using var npdmFile = new UniqueRef<IFile>();
+
+            Result result = codeFs.OpenFile(ref npdmFile.Ref(), "/main.npdm".ToU8Span(), OpenMode.Read);
+
+            MetaLoader metaData;
+
+            npdmFile.Get.GetSize(out long fileSize).ThrowIfFailure();
+
+            var npdmBuffer = new byte[fileSize];
+            npdmFile.Get.Read(out _, 0, npdmBuffer).ThrowIfFailure();
+
+            metaData = new MetaLoader();
+            metaData.Load(npdmBuffer).ThrowIfFailure();
+
+            NsoExecutable[] nsos = new NsoExecutable[ExeFsPrefixes.Length];
+
+            for (int i = 0; i < nsos.Length; i++)
+            {
+                string name = ExeFsPrefixes[i];
+
+                if (!codeFs.FileExists($"/{name}"))
+                {
+                    continue; // File doesn't exist, skip.
+                }
+
+                Logger.Info?.Print(LogClass.Loader, $"Loading {name}...");
+
+                using var nsoFile = new UniqueRef<IFile>();
+
+                codeFs.OpenFile(ref nsoFile.Ref(), $"/{name}".ToU8Span(), OpenMode.Read).ThrowIfFailure();
+
+                nsos[i] = new NsoExecutable(nsoFile.Release().AsStorage(), name);
+            }
+
+            // Collect the nsos, ignoring ones that aren't used.
+            NsoExecutable[] programs = nsos.Where(x => x != null).ToArray();
+
+            MemoryManagerMode memoryManagerMode = _device.Configuration.MemoryManagerMode;
+
+            if (!MemoryBlock.SupportsFlags(MemoryAllocationFlags.ViewCompatible))
+            {
+                memoryManagerMode = MemoryManagerMode.SoftwarePageTable;
+            }
+
+            metaData.GetNpdm(out Npdm npdm).ThrowIfFailure();
+            ProgramInfo programInfo = new ProgramInfo(in npdm, allowCodeMemoryForJit: false);
+            ProgramLoader.LoadNsos(_device.System.KernelContext, out _, metaData, programInfo, executables: programs);
+
+            string titleIdText = npdm.Aci.Value.ProgramId.Value.ToString("x16");
+            bool titleIs64Bit = (npdm.Meta.Value.Flags & 1) != 0;
+
+            string programName = Encoding.ASCII.GetString(npdm.Meta.Value.ProgramName).TrimEnd('\0');
+
+            Logger.Info?.Print(LogClass.Loader, $"Service Loaded: {programName} [{titleIdText}] [{(titleIs64Bit ? "64-bit" : "32-bit")}]");
+        }
+
         private void LoadNca(Nca mainNca, Nca patchNca, Nca controlNca)
         {
             if (mainNca.Header.ContentType != NcaContentType.Program)
@@ -393,8 +482,8 @@ namespace Ryujinx.HLE.HOS
             MetaLoader metaData = ReadNpdm(codeFs);
 
             _device.Configuration.VirtualFileSystem.ModLoader.CollectMods(
-                _device.Configuration.ContentManager.GetAocTitleIds().Prepend(TitleId), 
-                _device.Configuration.VirtualFileSystem.ModLoader.GetModsBasePath(), 
+                _device.Configuration.ContentManager.GetAocTitleIds().Prepend(TitleId),
+                _device.Configuration.VirtualFileSystem.ModLoader.GetModsBasePath(),
                 _device.Configuration.VirtualFileSystem.ModLoader.GetSdModsBasePath());
 
             if (controlNca != null)
@@ -508,7 +597,7 @@ namespace Ryujinx.HLE.HOS
         {
             if (_device.Configuration.VirtualFileSystem.ModLoader.ReplaceExefsPartition(TitleId, ref codeFs))
             {
-                metaData = null; //TODO: Check if we should retain old npdm
+                metaData = null; // TODO: Check if we should retain old npdm.
             }
 
             metaData ??= ReadNpdm(codeFs);
@@ -521,7 +610,7 @@ namespace Ryujinx.HLE.HOS
 
                 if (!codeFs.FileExists($"/{name}"))
                 {
-                    continue; // file doesn't exist, skip
+                    continue; // File doesn't exist, skip.
                 }
 
                 Logger.Info?.Print(LogClass.Loader, $"Loading {name}...");
@@ -533,13 +622,13 @@ namespace Ryujinx.HLE.HOS
                 nsos[i] = new NsoExecutable(nsoFile.Release().AsStorage(), name);
             }
 
-            // ExeFs file replacements
+            // ExeFs file replacements.
             ModLoadResult modLoadResult = _device.Configuration.VirtualFileSystem.ModLoader.ApplyExefsMods(TitleId, nsos);
 
-            // collect the nsos, ignoring ones that aren't used
+            // Collect the nsos, ignoring ones that aren't used.
             NsoExecutable[] programs = nsos.Where(x => x != null).ToArray();
 
-            // take the npdm from mods if present
+            // Take the npdm from mods if present.
             if (modLoadResult.Npdm != null)
             {
                 metaData = modLoadResult.Npdm;
@@ -571,8 +660,12 @@ namespace Ryujinx.HLE.HOS
 
             Ptc.Initialize(TitleIdText, DisplayVersion, usePtc, memoryManagerMode);
 
+            // We allow it for nx-hbloader because it can be used to launch homebrew.
+            bool allowCodeMemoryForJit = TitleId == 0x010000000000100DUL;
+
             metaData.GetNpdm(out Npdm npdm).ThrowIfFailure();
-            ProgramLoader.LoadNsos(_device.System.KernelContext, out ProcessTamperInfo tamperInfo, metaData, new ProgramInfo(in npdm), executables: programs);
+            ProgramInfo programInfo = new ProgramInfo(in npdm, allowCodeMemoryForJit);
+            ProgramLoader.LoadNsos(_device.System.KernelContext, out ProcessTamperInfo tamperInfo, metaData, programInfo, executables: programs);
 
             _device.Configuration.VirtualFileSystem.ModLoader.LoadCheats(TitleId, tamperInfo, _device.TamperMachine);
         }
@@ -581,7 +674,7 @@ namespace Ryujinx.HLE.HOS
         {
             MetaLoader metaData = GetDefaultNpdm();
             metaData.GetNpdm(out Npdm npdm).ThrowIfFailure();
-            ProgramInfo programInfo = new ProgramInfo(in npdm);
+            ProgramInfo programInfo = new ProgramInfo(in npdm, allowCodeMemoryForJit: true);
 
             bool isNro = Path.GetExtension(filePath).ToLower() == ".nro";
 
@@ -594,7 +687,7 @@ namespace Ryujinx.HLE.HOS
 
                 executable = obj;
 
-                // homebrew NRO can actually have some data after the actual NRO
+                // Homebrew NRO can actually have some data after the actual NRO.
                 if (input.Length > obj.FileSize)
                 {
                     input.Position = obj.FileSize;
@@ -673,7 +766,7 @@ namespace Ryujinx.HLE.HOS
             TitleIs64Bit = (npdm.Meta.Value.Flags & 1) != 0;
             _device.System.LibHacHorizonManager.ArpIReader.ApplicationId = new LibHac.ApplicationId(TitleId);
 
-            // Explicitly null titleid to disable the shader cache
+            // Explicitly null titleid to disable the shader cache.
             Graphics.Gpu.GraphicsConfig.TitleId = null;
             _device.Gpu.HostInitalized.Set();
 

Ryujinx.HLE/HOS/Horizon.cs

@@ -72,6 +72,8 @@ namespace Ryujinx.HLE.HOS
 
         internal List<NfpDevice> NfpDevices { get; private set; }
 
+        internal SmRegistry SmRegistry { get; private set; }
+
         internal ServerBase SmServer { get; private set; }
         internal ServerBase BsdServer { get; private set; }
         internal ServerBase AudRenServer { get; private set; }
@@ -291,7 +293,8 @@ namespace Ryujinx.HLE.HOS
 
         private void InitializeServices()
         {
-            SmServer = new ServerBase(KernelContext, "SmServer", () => new IUserInterface(KernelContext));
+            SmRegistry = new SmRegistry();
+            SmServer = new ServerBase(KernelContext, "SmServer", () => new IUserInterface(KernelContext, SmRegistry));
 
             // Wait until SM server thread is done with initialization,
             // only then doing connections to SM is safe.
@@ -468,7 +471,7 @@ namespace Ryujinx.HLE.HOS
                 AudioRendererManager.Dispose();
 
                 LibHacHorizonManager.PmClient.Fs.UnregisterProgram(LibHacHorizonManager.ApplicationClient.Os.GetCurrentProcessId().Value).ThrowIfFailure();
-                
+
                 KernelContext.Dispose();
             }
         }

Ryujinx.HLE/HOS/Kernel/KernelStatic.cs

@@ -59,5 +59,15 @@ namespace Ryujinx.HLE.HOS.Kernel
         {
             return GetCurrentThread().Owner;
         }
+
+        internal static KProcess GetProcessByPid(ulong pid)
+        {
+            if (Context.Processes.TryGetValue(pid, out KProcess process))
+            {
+                return process;
+            }
+
+            return null;
+        }
     }
 }

Ryujinx.HLE/HOS/Kernel/Process/KProcess.cs

@@ -60,6 +60,8 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
 
         public KProcessCapabilities Capabilities { get; private set; }
 
+        public bool AllowCodeMemoryForJit { get; private set; }
+
         public ulong TitleId { get; private set; }
         public bool IsApplication { get; private set; }
         public ulong Pid { get; private set; }
@@ -90,7 +92,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
 
         public HleProcessDebugger Debugger { get; private set; }
 
-        public KProcess(KernelContext context) : base(context)
+        public KProcess(KernelContext context, bool allowCodeMemoryForJit = false) : base(context)
         {
             _processLock = new object();
             _threadingLock = new object();
@@ -102,6 +104,8 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
 
             Capabilities = new KProcessCapabilities();
 
+            AllowCodeMemoryForJit = allowCodeMemoryForJit;
+
             RandomEntropy = new ulong[KScheduler.CpuCoresCount];
             PinnedThreads = new KThread[KScheduler.CpuCoresCount];
 

Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs

@@ -7,7 +7,6 @@ using Ryujinx.HLE.HOS.Kernel.Ipc;
 using Ryujinx.HLE.HOS.Kernel.Memory;
 using Ryujinx.HLE.HOS.Kernel.Process;
 using Ryujinx.HLE.HOS.Kernel.Threading;
-using Ryujinx.Memory;
 using System;
 using System.Threading;
 
@@ -1363,10 +1362,10 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
 
             KCodeMemory codeMemory = currentProcess.HandleTable.GetObject<KCodeMemory>(handle);
 
-            // Newer versions of the return also returns an error here if the owner and process
+            // Newer versions of the kernel also returns an error here if the owner and process
             // where the operation will happen are the same. We do not return an error here
-            // because some homebrew requires this to be patched out to work (for JIT).
-            if (codeMemory == null /* || codeMemory.Owner == currentProcess */)
+            // for homebrew because some of them requires this to be patched out to work (for JIT).
+            if (codeMemory == null || (!currentProcess.AllowCodeMemoryForJit && codeMemory.Owner == currentProcess))
             {
                 return KernelResult.InvalidHandle;
             }

Ryujinx.HLE/HOS/ProgramLoader.cs

@@ -20,11 +20,13 @@ namespace Ryujinx.HLE.HOS
     {
         public string Name;
         public ulong ProgramId;
+        public bool AllowCodeMemoryForJit;
 
-        public ProgramInfo(in Npdm npdm)
+        public ProgramInfo(in Npdm npdm, bool allowCodeMemoryForJit)
         {
             Name = StringUtils.Utf8ZToString(npdm.Meta.Value.ProgramName);
             ProgramId = npdm.Aci.Value.ProgramId.Value;
+            AllowCodeMemoryForJit = allowCodeMemoryForJit;
         }
     }
 
@@ -141,7 +143,13 @@ namespace Ryujinx.HLE.HOS
             return true;
         }
 
-        public static bool LoadNsos(KernelContext context, out ProcessTamperInfo tamperInfo, MetaLoader metaData, ProgramInfo programInfo, byte[] arguments = null, params IExecutable[] executables)
+        public static bool LoadNsos(
+            KernelContext context,
+            out ProcessTamperInfo tamperInfo,
+            MetaLoader metaData,
+            ProgramInfo programInfo,
+            byte[] arguments = null,
+            params IExecutable[] executables)
         {
             LibHac.Result rc = metaData.GetNpdm(out var npdm);
 
@@ -243,7 +251,7 @@ namespace Ryujinx.HLE.HOS
                 return false;
             }
 
-            KProcess process = new KProcess(context);
+            KProcess process = new KProcess(context, programInfo.AllowCodeMemoryForJit);
 
             MemoryRegion memoryRegion = (MemoryRegion)((npdm.Acid.Value.Flags >> 2) & 0xf);
 

Ryujinx.HLE/HOS/Services/Am/AppletOE/ApplicationProxyService/ApplicationProxy/IApplicationFunctions.cs

@@ -2,9 +2,12 @@ using LibHac;
 using LibHac.Account;
 using LibHac.Common;
 using LibHac.Fs;
+using LibHac.FsSystem;
+using LibHac.Ncm;
 using LibHac.Ns;
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
+using Ryujinx.HLE.Exceptions;
 using Ryujinx.HLE.HOS.Ipc;
 using Ryujinx.HLE.HOS.Kernel.Common;
 using Ryujinx.HLE.HOS.Kernel.Memory;
@@ -12,9 +15,11 @@ using Ryujinx.HLE.HOS.Kernel.Threading;
 using Ryujinx.HLE.HOS.Services.Am.AppletAE.Storage;
 using Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.ApplicationProxy.Types;
 using Ryujinx.HLE.HOS.Services.Sdb.Pdm.QueryService;
+using Ryujinx.HLE.HOS.Services.Sm;
 using Ryujinx.HLE.HOS.SystemState;
 using System;
 using System.Numerics;
+using System.Threading;
 
 using static LibHac.Fs.ApplicationSaveDataManagement;
 using AccountUid    = Ryujinx.HLE.HOS.Services.Account.Acc.UserId;
@@ -37,6 +42,8 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
         private int _notificationStorageChannelEventHandle;
         private int _healthWarningDisappearedSystemEventHandle;
 
+        private int _jitLoaded;
+
         private HorizonClient _horizon;
 
         public IApplicationFunctions(Horizon system)
@@ -631,5 +638,31 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
 
             return ResultCode.Success;
         }
+
+        [CommandHipc(1001)] // 10.0.0+
+        // PrepareForJit()
+        public ResultCode PrepareForJit(ServiceCtx context)
+        {
+            if (Interlocked.Exchange(ref _jitLoaded, 1) == 0)
+            {
+                string jitPath = context.Device.System.ContentManager.GetInstalledContentPath(0x010000000000003B, StorageId.BuiltInSystem, NcaContentType.Program);
+                string filePath = context.Device.FileSystem.SwitchPathToSystemPath(jitPath);
+
+                if (string.IsNullOrWhiteSpace(filePath))
+                {
+                    throw new InvalidSystemResourceException($"JIT (010000000000003B) system title not found! The JIT will not work, provide the system archive to fix this error. (See https://github.com/Ryujinx/Ryujinx#requirements for more information)");
+                }
+
+                context.Device.Application.LoadServiceNca(filePath);
+
+                // FIXME: Most likely not how this should be done?
+                while (!context.Device.System.SmRegistry.IsServiceRegistered("jit:u"))
+                {
+                    context.Device.System.SmRegistry.WaitForServiceRegistration();
+                }
+            }
+
+            return ResultCode.Success;
+        }
     }
 }

Ryujinx.HLE/HOS/Services/Pm/IDebugMonitorInterface.cs

@@ -1,8 +1,31 @@
-namespace Ryujinx.HLE.HOS.Services.Pm
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.HOS.Kernel;
+using Ryujinx.HLE.HOS.Kernel.Common;
+using Ryujinx.HLE.HOS.Kernel.Process;
+
+namespace Ryujinx.HLE.HOS.Services.Pm
 {
     [Service("pm:dmnt")]
     class IDebugMonitorInterface : IpcService
     {
         public IDebugMonitorInterface(ServiceCtx context) { }
+
+        [CommandHipc(65000)]
+        // AtmosphereGetProcessInfo(os::ProcessId process_id) -> sf::OutCopyHandle out_process_handle, sf::Out<ncm::ProgramLocation> out_loc, sf::Out<cfg::OverrideStatus> out_status
+        public ResultCode GetProcessInfo(ServiceCtx context)
+        {
+            ulong pid = context.RequestData.ReadUInt64();
+
+            KProcess process = KernelStatic.GetProcessByPid(pid);
+
+            if (context.Process.HandleTable.GenerateHandle(process, out int processHandle) != KernelResult.Success)
+            {
+                throw new System.Exception("Out of handles!");
+            }
+
+            context.Response.HandleDesc = IpcHandleDesc.MakeCopy(processHandle);
+
+            return ResultCode.Success;
+        }
     }
 }

Ryujinx.HLE/HOS/Services/Ro/IRoInterface.cs

@@ -30,6 +30,7 @@ namespace Ryujinx.HLE.HOS.Services.Ro
         private List<NroInfo> _nroInfos;
 
         private KProcess _owner;
+        private IVirtualMemoryManager _ownerMm;
 
         private static Random _random = new Random();
 
@@ -38,6 +39,7 @@ namespace Ryujinx.HLE.HOS.Services.Ro
             _nrrInfos = new List<NrrInfo>(MaxNrr);
             _nroInfos = new List<NroInfo>(MaxNro);
             _owner    = null;
+            _ownerMm  = null;
         }
 
         private ResultCode ParseNrr(out NrrInfo nrrInfo, ServiceCtx context, ulong nrrAddress, ulong nrrSize)
@@ -564,10 +566,12 @@ namespace Ryujinx.HLE.HOS.Services.Ro
                 return ResultCode.InvalidSession;
             }
 
-            _owner = context.Process.HandleTable.GetKProcess(context.Request.HandleDesc.ToCopy[0]);
-            context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
+            int processHandle = context.Request.HandleDesc.ToCopy[0];
+            _owner = context.Process.HandleTable.GetKProcess(processHandle);
+            _ownerMm = _owner?.CpuMemory;
+            context.Device.System.KernelContext.Syscall.CloseHandle(processHandle);
 
-            if (_owner?.CpuMemory is IRefCounted rc)
+            if (_ownerMm is IRefCounted rc)
             {
                 rc.IncrementReferenceCount();
             }
@@ -575,6 +579,15 @@ namespace Ryujinx.HLE.HOS.Services.Ro
             return ResultCode.Success;
         }
 
+        [CommandHipc(10)]
+        // LoadNrr2(u64, u64, u64, pid)
+        public ResultCode LoadNrr2(ServiceCtx context)
+        {
+            context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
+
+            return LoadNrr(context);
+        }
+
         protected override void Dispose(bool isDisposing)
         {
             if (isDisposing)
@@ -586,7 +599,7 @@ namespace Ryujinx.HLE.HOS.Services.Ro
 
                 _nroInfos.Clear();
 
-                if (_owner?.CpuMemory is IRefCounted rc)
+                if (_ownerMm is IRefCounted rc)
                 {
                     rc.DecrementReferenceCount();
                 }

Ryujinx.HLE/HOS/Services/ServerBase.cs

@@ -4,7 +4,6 @@ using Ryujinx.HLE.HOS.Kernel.Common;
 using Ryujinx.HLE.HOS.Kernel.Ipc;
 using Ryujinx.HLE.HOS.Kernel.Process;
 using Ryujinx.HLE.HOS.Kernel.Threading;
-using Ryujinx.HLE.HOS.Services.Sm;
 using System;
 using System.Buffers.Binary;
 using System.Collections.Generic;

Ryujinx.HLE/HOS/Services/Settings/ISystemSettingsServer.cs

@@ -222,7 +222,7 @@ namespace Ryujinx.HLE.HOS.Services.Settings
             return ResultCode.Success;
         }
 
-       [CommandHipc(60)]
+        [CommandHipc(60)]
         // IsUserSystemClockAutomaticCorrectionEnabled() -> bool
         public ResultCode IsUserSystemClockAutomaticCorrectionEnabled(ServiceCtx context)
         {
@@ -234,6 +234,17 @@ namespace Ryujinx.HLE.HOS.Services.Settings
             return ResultCode.Success;
         }
 
+        [CommandHipc(62)]
+        // GetDebugModeFlag() -> bool
+        public ResultCode GetDebugModeFlag(ServiceCtx context)
+        {
+            context.ResponseData.Write(false);
+
+            Logger.Stub?.PrintStub(LogClass.ServiceSet);
+
+            return ResultCode.Success;
+        }
+
         [CommandHipc(77)]
         // GetDeviceNickName() -> buffer<nn::settings::system::DeviceNickName, 0x16>
         public ResultCode GetDeviceNickName(ServiceCtx context)

Ryujinx.HLE/HOS/Services/Sm/IUserInterface.cs

@@ -1,11 +1,9 @@
 using Ryujinx.Common.Logging;
-using Ryujinx.HLE.Exceptions;
 using Ryujinx.HLE.HOS.Ipc;
 using Ryujinx.HLE.HOS.Kernel;
 using Ryujinx.HLE.HOS.Kernel.Common;
 using Ryujinx.HLE.HOS.Kernel.Ipc;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -17,21 +15,19 @@ namespace Ryujinx.HLE.HOS.Services.Sm
     {
         private static Dictionary<string, Type> _services;
 
-        private static readonly ConcurrentDictionary<string, KPort> _registeredServices;
-
+        private readonly SmRegistry _registry;
         private readonly ServerBase _commonServer;
 
         private bool _isInitialized;
 
-        public IUserInterface(KernelContext context)
+        public IUserInterface(KernelContext context, SmRegistry registry)
         {
             _commonServer = new ServerBase(context, "CommonServer");
+            _registry = registry;
         }
 
         static IUserInterface()
         {
-            _registeredServices = new ConcurrentDictionary<string, KPort>();
-
             _services = Assembly.GetExecutingAssembly().GetTypes()
                 .SelectMany(type => type.GetCustomAttributes(typeof(ServiceAttribute), true)
                 .Select(service => (((ServiceAttribute)service).Name, type)))
@@ -74,7 +70,7 @@ namespace Ryujinx.HLE.HOS.Services.Sm
 
             KSession session = new KSession(context.Device.System.KernelContext);
 
-            if (_registeredServices.TryGetValue(name, out KPort port))
+            if (_registry.TryGetService(name, out KPort port))
             {
                 KernelResult result = port.EnqueueIncomingSession(session.ServerSession);
 
@@ -82,6 +78,15 @@ namespace Ryujinx.HLE.HOS.Services.Sm
                 {
                     throw new InvalidOperationException($"Session enqueue on port returned error \"{result}\".");
                 }
+
+                if (context.Process.HandleTable.GenerateHandle(session.ClientSession, out int handle) != KernelResult.Success)
+                {
+                    throw new InvalidOperationException("Out of handles!");
+                }
+
+                session.ClientSession.DecrementReferenceCount();
+
+                context.Response.HandleDesc = IpcHandleDesc.MakeMove(handle);
             }
             else
             {
@@ -107,18 +112,18 @@ namespace Ryujinx.HLE.HOS.Services.Sm
                         throw new NotImplementedException(name);
                     }
                 }
+
+                if (context.Process.HandleTable.GenerateHandle(session.ClientSession, out int handle) != KernelResult.Success)
+                {
+                    throw new InvalidOperationException("Out of handles!");
+                }
+
+                session.ServerSession.DecrementReferenceCount();
+                session.ClientSession.DecrementReferenceCount();
+
+                context.Response.HandleDesc = IpcHandleDesc.MakeMove(handle);
             }
 
-            if (context.Process.HandleTable.GenerateHandle(session.ClientSession, out int handle) != KernelResult.Success)
-            {
-                throw new InvalidOperationException("Out of handles!");
-            }
-
-            session.ServerSession.DecrementReferenceCount();
-            session.ClientSession.DecrementReferenceCount();
-
-            context.Response.HandleDesc = IpcHandleDesc.MakeMove(handle);
-
             return ResultCode.Success;
         }
 
@@ -179,7 +184,7 @@ namespace Ryujinx.HLE.HOS.Services.Sm
 
             KPort port = new KPort(context.Device.System.KernelContext, maxSessions, isLight, 0);
 
-            if (!_registeredServices.TryAdd(name, port))
+            if (!_registry.TryRegister(name, port))
             {
                 return ResultCode.AlreadyRegistered;
             }
@@ -219,7 +224,7 @@ namespace Ryujinx.HLE.HOS.Services.Sm
                 return ResultCode.InvalidName;
             }
 
-            if (!_registeredServices.TryRemove(name, out _))
+            if (!_registry.Unregister(name))
             {
                 return ResultCode.NotRegistered;
             }

Ryujinx.HLE/HOS/Services/Sm/SmRegistry.cs

@@ -0,0 +1,49 @@
+using Ryujinx.HLE.HOS.Kernel.Ipc;
+using System.Collections.Concurrent;
+using System.Threading;
+
+namespace Ryujinx.HLE.HOS.Services.Sm
+{
+    class SmRegistry
+    {
+        private readonly ConcurrentDictionary<string, KPort> _registeredServices;
+        private readonly AutoResetEvent _serviceRegistrationEvent;
+
+        public SmRegistry()
+        {
+            _registeredServices = new ConcurrentDictionary<string, KPort>();
+            _serviceRegistrationEvent = new AutoResetEvent(false);
+        }
+
+        public bool TryGetService(string name, out KPort port)
+        {
+            return _registeredServices.TryGetValue(name, out port);
+        }
+
+        public bool TryRegister(string name, KPort port)
+        {
+            if (_registeredServices.TryAdd(name, port))
+            {
+                _serviceRegistrationEvent.Set();
+                return true;
+            }
+
+            return false;
+        }
+
+        public bool Unregister(string name)
+        {
+            return _registeredServices.TryRemove(name, out _);
+        }
+
+        public bool IsServiceRegistered(string name)
+        {
+            return _registeredServices.TryGetValue(name, out _);
+        }
+
+        public void WaitForServiceRegistration()
+        {
+            _serviceRegistrationEvent.WaitOne();
+        }
+    }
+}

Ryujinx.Memory/MemoryBlock.cs

@@ -48,7 +48,7 @@ namespace Ryujinx.Memory
             {
                 _viewCompatible = flags.HasFlag(MemoryAllocationFlags.ViewCompatible);
                 _forceWindows4KBView = flags.HasFlag(MemoryAllocationFlags.ForceWindows4KBViewMapping);
-                _pointer = MemoryManagement.Reserve(size, _viewCompatible);
+                _pointer = MemoryManagement.Reserve(size, _viewCompatible, _forceWindows4KBView);
             }
             else
             {
@@ -404,7 +404,7 @@ namespace Ryujinx.Memory
                 }
                 else
                 {
-                    MemoryManagement.Free(ptr);
+                    MemoryManagement.Free(ptr, Size, _forceWindows4KBView);
                 }
 
                 foreach (MemoryBlock viewStorage in _viewStorages.Keys)

Ryujinx.Memory/MemoryManagement.cs

@@ -8,9 +8,7 @@ namespace Ryujinx.Memory
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
-                return MemoryManagementWindows.Allocate(sizeNint);
+                return MemoryManagementWindows.Allocate((IntPtr)size);
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
             {
@@ -22,13 +20,11 @@ namespace Ryujinx.Memory
             }
         }
 
-        public static IntPtr Reserve(ulong size, bool viewCompatible)
+        public static IntPtr Reserve(ulong size, bool viewCompatible, bool force4KBMap)
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
-                return MemoryManagementWindows.Reserve(sizeNint, viewCompatible);
+                return MemoryManagementWindows.Reserve((IntPtr)size, viewCompatible, force4KBMap);
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
             {
@@ -44,9 +40,7 @@ namespace Ryujinx.Memory
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
-                return MemoryManagementWindows.Commit(address, sizeNint);
+                return MemoryManagementWindows.Commit(address, (IntPtr)size);
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
             {
@@ -62,9 +56,7 @@ namespace Ryujinx.Memory
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
-                return MemoryManagementWindows.Decommit(address, sizeNint);
+                return MemoryManagementWindows.Decommit(address, (IntPtr)size);
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
             {
@@ -80,15 +72,13 @@ namespace Ryujinx.Memory
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
                 if (force4KBMap)
                 {
-                    MemoryManagementWindows.MapView4KB(sharedMemory, srcOffset, address, sizeNint);
+                    MemoryManagementWindows.MapView4KB(sharedMemory, srcOffset, address, (IntPtr)size);
                 }
                 else
                 {
-                    MemoryManagementWindows.MapView(sharedMemory, srcOffset, address, sizeNint);
+                    MemoryManagementWindows.MapView(sharedMemory, srcOffset, address, (IntPtr)size);
                 }
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
@@ -105,15 +95,13 @@ namespace Ryujinx.Memory
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
                 if (force4KBMap)
                 {
-                    MemoryManagementWindows.UnmapView4KB(address, sizeNint);
+                    MemoryManagementWindows.UnmapView4KB(address, (IntPtr)size);
                 }
                 else
                 {
-                    MemoryManagementWindows.UnmapView(sharedMemory, address, sizeNint);
+                    MemoryManagementWindows.UnmapView(sharedMemory, address, (IntPtr)size);
                 }
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
@@ -132,15 +120,13 @@ namespace Ryujinx.Memory
 
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
                 if (forView && force4KBMap)
                 {
-                    result = MemoryManagementWindows.Reprotect4KB(address, sizeNint, permission, forView);
+                    result = MemoryManagementWindows.Reprotect4KB(address, (IntPtr)size, permission, forView);
                 }
                 else
                 {
-                    result = MemoryManagementWindows.Reprotect(address, sizeNint, permission, forView);
+                    result = MemoryManagementWindows.Reprotect(address, (IntPtr)size, permission, forView);
                 }
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
@@ -158,11 +144,11 @@ namespace Ryujinx.Memory
             }
         }
 
-        public static bool Free(IntPtr address)
+        public static bool Free(IntPtr address, ulong size, bool force4KBMap)
         {
             if (OperatingSystem.IsWindows())
             {
-                return MemoryManagementWindows.Free(address);
+                return MemoryManagementWindows.Free(address, (IntPtr)size, force4KBMap);
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
             {
@@ -178,9 +164,7 @@ namespace Ryujinx.Memory
         {
             if (OperatingSystem.IsWindows())
             {
-                IntPtr sizeNint = new IntPtr((long)size);
-
-                return MemoryManagementWindows.CreateSharedMemory(sizeNint, reserve);
+                return MemoryManagementWindows.CreateSharedMemory((IntPtr)size, reserve);
             }
             else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
             {

Ryujinx.Memory/MemoryManagementWindows.cs

@@ -7,21 +7,27 @@ namespace Ryujinx.Memory
     [SupportedOSPlatform("windows")]
     static class MemoryManagementWindows
     {
-        private const int PageSize = 0x1000;
+        public const int PageSize = 0x1000;
 
         private static readonly PlaceholderManager _placeholders = new PlaceholderManager();
+        private static readonly PlaceholderManager4KB _placeholders4KB = new PlaceholderManager4KB();
 
         public static IntPtr Allocate(IntPtr size)
         {
             return AllocateInternal(size, AllocationType.Reserve | AllocationType.Commit);
         }
 
-        public static IntPtr Reserve(IntPtr size, bool viewCompatible)
+        public static IntPtr Reserve(IntPtr size, bool viewCompatible, bool force4KBMap)
         {
             if (viewCompatible)
             {
                 IntPtr baseAddress = AllocateInternal2(size, AllocationType.Reserve | AllocationType.ReservePlaceholder);
-                _placeholders.ReserveRange((ulong)baseAddress, (ulong)size);
+
+                if (!force4KBMap)
+                {
+                    _placeholders.ReserveRange((ulong)baseAddress, (ulong)size);
+                }
+
                 return baseAddress;
             }
 
@@ -69,6 +75,8 @@ namespace Ryujinx.Memory
 
         public static void MapView4KB(IntPtr sharedMemory, ulong srcOffset, IntPtr location, IntPtr size)
         {
+            _placeholders4KB.UnmapAndMarkRangeAsMapped(location, size);
+
             ulong uaddress = (ulong)location;
             ulong usize = (ulong)size;
             IntPtr endLocation = (IntPtr)(uaddress + usize);
@@ -105,20 +113,7 @@ namespace Ryujinx.Memory
 
         public static void UnmapView4KB(IntPtr location, IntPtr size)
         {
-            ulong uaddress = (ulong)location;
-            ulong usize = (ulong)size;
-            IntPtr endLocation = (IntPtr)(uaddress + usize);
-
-            while (location != endLocation)
-            {
-                bool result = WindowsApi.UnmapViewOfFile2(WindowsApi.CurrentProcessHandle, location, 2);
-                if (!result)
-                {
-                    throw new WindowsApiException("UnmapViewOfFile2");
-                }
-
-                location += PageSize;
-            }
+            _placeholders4KB.UnmapView(location, size);
         }
 
         public static bool Reprotect(IntPtr address, IntPtr size, MemoryPermission permission, bool forView)
@@ -151,8 +146,17 @@ namespace Ryujinx.Memory
             return true;
         }
 
-        public static bool Free(IntPtr address)
+        public static bool Free(IntPtr address, IntPtr size, bool force4KBMap)
         {
+            if (force4KBMap)
+            {
+                _placeholders4KB.UnmapRange(address, size);
+            }
+            else
+            {
+                _placeholders.UnmapView(IntPtr.Zero, address, size);
+            }
+
             return WindowsApi.VirtualFree(address, IntPtr.Zero, AllocationType.Release);
         }
 

Ryujinx.Memory/WindowsShared/PlaceholderManager.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Diagnostics;
+using System.Runtime.Versioning;
 using System.Threading;
 
 namespace Ryujinx.Memory.WindowsShared
@@ -7,6 +8,7 @@ namespace Ryujinx.Memory.WindowsShared
     /// <summary>
     /// Windows memory placeholder manager.
     /// </summary>
+    [SupportedOSPlatform("windows")]
     class PlaceholderManager
     {
         private const ulong MinimumPageSize = 0x1000;
@@ -203,7 +205,7 @@ namespace Ryujinx.Memory.WindowsShared
             ulong endAddress = startAddress + unmapSize;
 
             var overlaps = Array.Empty<IntervalTreeNode<ulong, ulong>>();
-            int count = 0;
+            int count;
 
             lock (_mappings)
             {
@@ -226,8 +228,11 @@ namespace Ryujinx.Memory.WindowsShared
                     ulong overlapEnd = overlap.End;
                     ulong overlapValue = overlap.Value;
 
-                    _mappings.Remove(overlap);
-                    _mappings.Add(overlapStart, overlapEnd, ulong.MaxValue);
+                    lock (_mappings)
+                    {
+                        _mappings.Remove(overlap);
+                        _mappings.Add(overlapStart, overlapEnd, ulong.MaxValue);
+                    }
 
                     bool overlapStartsBefore = overlapStart < startAddress;
                     bool overlapEndsAfter = overlapEnd > endAddress;
@@ -364,7 +369,7 @@ namespace Ryujinx.Memory.WindowsShared
             ulong endAddress = reprotectAddress + reprotectSize;
 
             var overlaps = Array.Empty<IntervalTreeNode<ulong, ulong>>();
-            int count = 0;
+            int count;
 
             lock (_mappings)
             {
@@ -469,14 +474,12 @@ namespace Ryujinx.Memory.WindowsShared
         {
             ulong endAddress = address + size;
             var overlaps = Array.Empty<IntervalTreeNode<ulong, MemoryPermission>>();
-            int count = 0;
+            int count;
 
             lock (_protections)
             {
                 count = _protections.Get(address, endAddress, ref overlaps);
 
-                Debug.Assert(count > 0);
-
                 if (count == 1 &&
                     overlaps[0].Start <= address &&
                     overlaps[0].End >= endAddress &&
@@ -536,7 +539,7 @@ namespace Ryujinx.Memory.WindowsShared
         {
             ulong endAddress = address + size;
             var overlaps = Array.Empty<IntervalTreeNode<ulong, MemoryPermission>>();
-            int count = 0;
+            int count;
 
             lock (_protections)
             {
@@ -574,7 +577,7 @@ namespace Ryujinx.Memory.WindowsShared
         {
             ulong endAddress = address + size;
             var overlaps = Array.Empty<IntervalTreeNode<ulong, MemoryPermission>>();
-            int count = 0;
+            int count;
 
             lock (_protections)
             {

Ryujinx.Memory/WindowsShared/PlaceholderManager4KB.cs

@@ -0,0 +1,170 @@
+using System;
+using System.Runtime.Versioning;
+
+namespace Ryujinx.Memory.WindowsShared
+{
+    /// <summary>
+    /// Windows 4KB memory placeholder manager.
+    /// </summary>
+    [SupportedOSPlatform("windows")]
+    class PlaceholderManager4KB
+    {
+        private const int PageSize = MemoryManagementWindows.PageSize;
+
+        private readonly IntervalTree<ulong, byte> _mappings;
+
+        /// <summary>
+        /// Creates a new instance of the Windows 4KB memory placeholder manager.
+        /// </summary>
+        public PlaceholderManager4KB()
+        {
+            _mappings = new IntervalTree<ulong, byte>();
+        }
+
+        /// <summary>
+        /// Unmaps the specified range of memory and marks it as mapped internally.
+        /// </summary>
+        /// <remarks>
+        /// Since this marks the range as mapped, the expectation is that the range will be mapped after calling this method.
+        /// </remarks>
+        /// <param name="location">Memory address to unmap and mark as mapped</param>
+        /// <param name="size">Size of the range in bytes</param>
+        public void UnmapAndMarkRangeAsMapped(IntPtr location, IntPtr size)
+        {
+            ulong startAddress = (ulong)location;
+            ulong unmapSize = (ulong)size;
+            ulong endAddress = startAddress + unmapSize;
+
+            var overlaps = Array.Empty<IntervalTreeNode<ulong, byte>>();
+            int count = 0;
+
+            lock (_mappings)
+            {
+                count = _mappings.Get(startAddress, endAddress, ref overlaps);
+            }
+
+            for (int index = 0; index < count; index++)
+            {
+                var overlap = overlaps[index];
+
+                // Tree operations might modify the node start/end values, so save a copy before we modify the tree.
+                ulong overlapStart = overlap.Start;
+                ulong overlapEnd = overlap.End;
+                ulong overlapValue = overlap.Value;
+
+                _mappings.Remove(overlap);
+
+                ulong unmapStart = Math.Max(overlapStart, startAddress);
+                ulong unmapEnd = Math.Min(overlapEnd, endAddress);
+
+                if (overlapStart < startAddress)
+                {
+                    startAddress = overlapStart;
+                }
+
+                if (overlapEnd > endAddress)
+                {
+                    endAddress = overlapEnd;
+                }
+
+                ulong currentAddress = unmapStart;
+                while (currentAddress < unmapEnd)
+                {
+                    WindowsApi.UnmapViewOfFile2(WindowsApi.CurrentProcessHandle, (IntPtr)currentAddress, 2);
+                    currentAddress += PageSize;
+                }
+            }
+
+            _mappings.Add(startAddress, endAddress, 0);
+        }
+
+        /// <summary>
+        /// Unmaps views at the specified memory range.
+        /// </summary>
+        /// <param name="location">Address of the range</param>
+        /// <param name="size">Size of the range in bytes</param>
+        public void UnmapView(IntPtr location, IntPtr size)
+        {
+            ulong startAddress = (ulong)location;
+            ulong unmapSize = (ulong)size;
+            ulong endAddress = startAddress + unmapSize;
+
+            var overlaps = Array.Empty<IntervalTreeNode<ulong, byte>>();
+            int count = 0;
+
+            lock (_mappings)
+            {
+                count = _mappings.Get(startAddress, endAddress, ref overlaps);
+            }
+
+            for (int index = 0; index < count; index++)
+            {
+                var overlap = overlaps[index];
+
+                // Tree operations might modify the node start/end values, so save a copy before we modify the tree.
+                ulong overlapStart = overlap.Start;
+                ulong overlapEnd = overlap.End;
+
+                _mappings.Remove(overlap);
+
+                if (overlapStart < startAddress)
+                {
+                    _mappings.Add(overlapStart, startAddress, 0);
+                }
+
+                if (overlapEnd > endAddress)
+                {
+                    _mappings.Add(endAddress, overlapEnd, 0);
+                }
+
+                ulong unmapStart = Math.Max(overlapStart, startAddress);
+                ulong unmapEnd = Math.Min(overlapEnd, endAddress);
+
+                ulong currentAddress = unmapStart;
+                while (currentAddress < unmapEnd)
+                {
+                    WindowsApi.UnmapViewOfFile2(WindowsApi.CurrentProcessHandle, (IntPtr)currentAddress, 2);
+                    currentAddress += PageSize;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Unmaps mapped memory at a given range.
+        /// </summary>
+        /// <param name="location">Address of the range</param>
+        /// <param name="size">Size of the range in bytes</param>
+        public void UnmapRange(IntPtr location, IntPtr size)
+        {
+            ulong startAddress = (ulong)location;
+            ulong unmapSize = (ulong)size;
+            ulong endAddress = startAddress + unmapSize;
+
+            var overlaps = Array.Empty<IntervalTreeNode<ulong, byte>>();
+            int count = 0;
+
+            lock (_mappings)
+            {
+                count = _mappings.Get(startAddress, endAddress, ref overlaps);
+            }
+
+            for (int index = 0; index < count; index++)
+            {
+                var overlap = overlaps[index];
+
+                // Tree operations might modify the node start/end values, so save a copy before we modify the tree.
+                ulong unmapStart = Math.Max(overlap.Start, startAddress);
+                ulong unmapEnd = Math.Min(overlap.End, endAddress);
+
+                _mappings.Remove(overlap);
+
+                ulong currentAddress = unmapStart;
+                while (currentAddress < unmapEnd)
+                {
+                    WindowsApi.UnmapViewOfFile2(WindowsApi.CurrentProcessHandle, (IntPtr)currentAddress, 2);
+                    currentAddress += PageSize;
+                }
+            }
+        }
+    }
+}

Ryujinx/Program.cs

@@ -32,8 +32,20 @@ namespace Ryujinx
         [DllImport("libX11")]
         private extern static int XInitThreads();
 
+        [DllImport("user32.dll", SetLastError = true)]
+        public static extern int MessageBoxA(IntPtr hWnd, string text, string caption, uint type);
+
+        private const uint MB_ICONWARNING = 0x30;
+
         static void Main(string[] args)
-        { 
+        {
+            Version = ReleaseInformations.GetVersion();
+
+            if (OperatingSystem.IsWindows() && !OperatingSystem.IsWindowsVersionAtLeast(10, 0, 17134))
+            {
+                MessageBoxA(IntPtr.Zero, "You are running an outdated version of Windows.\n\nStarting on June 1st 2022, Ryujinx will only support Windows 10 1803 and newer.\n", $"Ryujinx {Version}", MB_ICONWARNING);
+            }
+
             // Parse Arguments.
             string launchPathArg      = null;
             string baseDirPathArg     = null;
@@ -82,8 +94,6 @@ namespace Ryujinx
             // Delete backup files after updating.
             Task.Run(Updater.CleanupUpdate);
 
-            Version = ReleaseInformations.GetVersion();
-
             Console.Title = $"Ryujinx Console {Version}";
 
             // NOTE: GTK3 doesn't init X11 in a multi threaded way.