From a65e1bf7e587cbac219307d96805fc097ae9bcb5 Mon Sep 17 00:00:00 2001
From: Egor Lazarchuk <48793978+ShadowCurse@users.noreply.github.com>
Date: Sun, 5 Jul 2026 10:57:10 +0100
Subject: [PATCH] Allocator: fix the caching of host va size

Commit abf9724 ("Allocator: Fix and optimize VA range detection")
removed assignment to the `HostVASize` global thus making each call to
`DetermineVASize` redo all the work with potential to produce incorrect
results. Set the global again to fix this.
---
 FEXCore/Source/Utils/Allocator.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/FEXCore/Source/Utils/Allocator.cpp b/FEXCore/Source/Utils/Allocator.cpp
index 83b2e6d0c..71b4110b7 100644
--- a/FEXCore/Source/Utils/Allocator.cpp
+++ b/FEXCore/Source/Utils/Allocator.cpp
@@ -125,6 +125,7 @@ FEX_DEFAULT_VISIBILITY size_t DetermineVASize() {
       ::munmap(Ptr, FEXCore::Utils::FEX_PAGE_SIZE);
     }
     if (Ptr != (void*)~0ULL || errno == EEXIST) {
+      HostVASize = Bits;
       return Bits;
     }
   }