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fix(memory): expand the HLE guest-allocation arena (#843)

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Co-authored-by: Foued Attar <foued.attar@lyceeastier.com>
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frangametv
2026-08-24 18:23:43 +02:00
committed by GitHub
parent 807aad18b3
commit 600fcde637
2 changed files with 18 additions and 2 deletions
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src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs
+7 -1
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@@ -29,7 +29,13 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
private const ulong PageSize = 0x1000;
private const ulong HostAllocationGranularity = 0x10000;
private const ulong GuestAllocationArenaAddress = 0x00006000_0000_0000;
private const ulong GuestAllocationArenaSize = 0x0100_0000;
// Full C++ runtimes can route large numbers of HLE-backed heap allocations
// through this arena. The original 16 MiB capacity could be exhausted
// during asset setup, turning a valid allocation request into a null
// pointer that failed later in unrelated guest code. Keep enough capacity
// for those workloads. Adapted from foufouadi's allocator-exhaustion
// investigation.
private const ulong GuestAllocationArenaSize = 0x2000_0000;
private const ulong GuestAllocationArenaStartOffset = PageSize;
private const ulong LargeDataReserveThreshold = 0x4000_0000UL; // 1 GiB
private const ulong FullCommitRegionLimit = 4UL << 30;