From 7bab7a181a0eedcfe4f803ca775a4817fe6f9f41 Mon Sep 17 00:00:00 2001
From: lizzie <lizzie@eden-emu.dev>
Date: Mon, 1 Dec 2025 10:58:26 +0000
Subject: [PATCH] (likely) fixes for virtual dmem?

---
 src/common/host_memory.cpp | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/src/common/host_memory.cpp b/src/common/host_memory.cpp
index c281eea395..2b81295ff9 100644
--- a/src/common/host_memory.cpp
+++ b/src/common/host_memory.cpp
@@ -34,15 +34,19 @@
 
 // FreeBSD
 #ifndef MAP_NORESERVE
-#define MAP_NORESERVE 0
+#   define MAP_NORESERVE 0
 #endif
 // Solaris 11 and illumos
 #ifndef MAP_ALIGNED_SUPER
-#define MAP_ALIGNED_SUPER 0
+#   define MAP_ALIGNED_SUPER 0
 #endif
 // macOS
 #ifndef MAP_ANONYMOUS
-#define MAP_ANONYMOUS MAP_ANON
+#   define MAP_ANONYMOUS MAP_ANON
+#endif
+// PlayStation 4
+#ifndef MAP_SYSTEM
+#   define MAP_SYSTEM 0
 #endif
 
 #endif // ^^^ POSIX ^^^
@@ -439,8 +443,8 @@ static void* ChooseVirtualBase(size_t virtual_size) {
 #else
 
 static void* ChooseVirtualBase(size_t virtual_size) {
-#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__) || defined(__sun__) || defined(__HAIKU__) || defined(__managarm__) || defined(__AIX__)
-    void* virtual_base = mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_ALIGNED_SUPER, -1, 0);
+#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__) || defined(__sun__) || defined(__HAIKU__) || defined(__managarm__) || defined(__AIX__) || defined(__OPENORBIS__)
+    void* virtual_base = mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_ALIGNED_SUPER | MAP_SYSTEM, -1, 0);
     if (virtual_base != MAP_FAILED)
         return virtual_base;
 #endif
@@ -539,13 +543,13 @@ public:
         }
         if (use_anon) {
             LOG_WARNING(Common_Memory, "Using private mappings instead of shared ones");
-            backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0));
+            backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_SYSTEM, -1, 0));
             if (fd > 0) {
                 fd = -1;
                 close(fd);
             }
         } else {
-            backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0));
+            backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_SYSTEM, fd, 0));
         }
         ASSERT_MSG(backing_base != MAP_FAILED, "mmap failed: {}", strerror(errno));