From 86fd0643c26433362a25acceb4fa1fcee07dd0b2 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 17 Jan 2023 01:13:24 -0300
Subject: Implement support for page sizes > 4KB (#4252)

* Implement support for page sizes > 4KB

* Check and work around more alignment issues

* Was not meant to change this

* Use MemoryBlock.GetPageSize() value for signal handler code

* Do not take the path for private allocations if host supports 4KB pages

* Add Flags attribute on MemoryMapFlags

* Fix dirty region size with 16kb pages

Would accidentally report a size that was too high (generally 16k instead of 4k, uploading 4x as much data)

Co-authored-by: riperiperi <rhy3756547@hotmail.com>
---
 Ryujinx.Memory/MemoryMapFlags.cs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Ryujinx.Memory/MemoryMapFlags.cs

(limited to 'Ryujinx.Memory/MemoryMapFlags.cs')

diff --git a/Ryujinx.Memory/MemoryMapFlags.cs b/Ryujinx.Memory/MemoryMapFlags.cs
new file mode 100644
index 00000000..b4c74c8c
--- /dev/null
+++ b/Ryujinx.Memory/MemoryMapFlags.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace Ryujinx.Memory
+{
+    /// <summary>
+    /// Flags that indicate how the host memory should be mapped.
+    /// </summary>
+    [Flags]
+    public enum MemoryMapFlags
+    {
+        /// <summary>
+        /// No mapping flags.
+        /// </summary>
+        None = 0,
+
+        /// <summary>
+        /// Indicates that the implementation is free to ignore the specified backing memory offset
+        /// and allocate its own private storage for the mapping.
+        /// This allows some mappings that would otherwise fail due to host platform restrictions to succeed.
+        /// </summary>
+        Private = 1 << 0
+    }
+}
-- 
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