do_not_reduce_page_size_from_64k_to_4k_on_linux_arm64.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Inf=C3=BChr?= <dinfuehr@chromium.org>
Date: Tue, 22 Mar 2022 17:33:03 +0000
Subject: Do not reduce page size from 64K to 4K on Linux/ARM64
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This fixes build on Asahi Linux which uses 16K pages.

Change-Id: I8cf3664849d98bcb984f339ebf9076d1cfaf5701
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3542265
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#983900}

diff --git a/build/config/android/BUILD.gn b/build/config/android/BUILD.gn
index 4fc5565e27a596fe4aa1a093cfc0567fbd24b2a0..69341cea35d0c44aeb5f09b39783bd2abfcdcc43 100644
--- a/build/config/android/BUILD.gn
+++ b/build/config/android/BUILD.gn
@@ -47,6 +47,13 @@ config("compiler") {
     "-Wl,--exclude-libs=libvpx_assembly_arm.a",
   ]
 
+  if (current_cpu == "arm64") {
+    # Reduce the page size from 65536 in order to reduce binary size slightly
+    # by shrinking the alignment gap between segments. This also causes all
+    # segments to be mapped adjacently, which breakpad relies on.
+    ldflags += [ "-Wl,-z,max-page-size=4096" ]
+  }
+
   if (current_cpu == "arm64") {
     if (arm_control_flow_integrity == "standard") {
       cflags += [ "-mbranch-protection=standard" ]
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 7b9ce0172eedf2b55fe7f3de7baee2f2028f4a7b..8f932d6493ec84f89c69078f95db7fc7ad03ef05 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -454,14 +454,7 @@ config("compiler") {
 
   # Linux-specific compiler flags setup.
   # ------------------------------------
-  if ((is_posix || is_fuchsia) && !is_apple && use_lld) {
-    if (current_cpu == "arm64") {
-      # Reduce the page size from 65536 in order to reduce binary size slightly
-      # by shrinking the alignment gap between segments. This also causes all
-      # segments to be mapped adjacently, which breakpad relies on.
-      ldflags += [ "-Wl,-z,max-page-size=4096" ]
-    }
-  } else if (use_gold) {
+  if (use_gold) {
     ldflags += [ "-fuse-ld=gold" ]
     if (!is_android) {
       # On Android, this isn't needed.  gcc in the NDK knows to look next to