1 files changed, 0 insertions, 106 deletions
diff --git a/pkgs/development/interpreters/spidermonkey/aarch64-48bit-va-fix.patch b/pkgs/development/interpreters/spidermonkey/aarch64-48bit-va-fix.patch
deleted file mode 100644
index 8258a46b174..00000000000
--- a/pkgs/development/interpreters/spidermonkey/aarch64-48bit-va-fix.patch
+++ /dev/null
@@ -1,106 +0,0 @@
-From a0c0f32299419359b44ac0f880c1ea9073ae51e1 Mon Sep 17 00:00:00 2001
-From: Zheng Xu <zheng.xu@linaro.org>
-Date: Fri, 02 Sep 2016 17:40:05 +0800
-Subject: [PATCH] Bug 1143022 - Manually mmap on arm64 to ensure high 17 bits are clear. r=ehoogeveen
-
-There might be 48-bit VA on arm64 depending on kernel configuration.
-Manually mmap heap memory to align with the assumption made by JS engine.
-
-Change-Id: Ic5d2b2fe4b758b3c87cc0688348af7e71a991146
----
-
-diff --git a/js/src/gc/Memory.cpp b/js/src/gc/Memory.cpp
-index 5b386a2..38101cf 100644
---- a/js/src/gc/Memory.cpp
-+++ b/js/src/gc/Memory.cpp
-@@ -309,6 +309,75 @@
- #endif
- }
- 
-+static inline void *
-+MapMemory(size_t length, int prot, int flags, int fd, off_t offset)
-+{
-+#if defined(__ia64__)
-+    /*
-+     * The JS engine assumes that all allocated pointers have their high 17 bits clear,
-+     * which ia64's mmap doesn't support directly. However, we can emulate it by passing
-+     * mmap an "addr" parameter with those bits clear. The mmap will return that address,
-+     * or the nearest available memory above that address, providing a near-guarantee
-+     * that those bits are clear. If they are not, we return NULL below to indicate
-+     * out-of-memory.
-+     *
-+     * The addr is chosen as 0x0000070000000000, which still allows about 120TB of virtual
-+     * address space.
-+     *
-+     * See Bug 589735 for more information.
-+     */
-+    void *region = mmap((void*)0x0000070000000000, length, prot, flags, fd, offset);
-+    if (region == MAP_FAILED)
-+        return MAP_FAILED;
-+    /*
-+     * If the allocated memory doesn't have its upper 17 bits clear, consider it
-+     * as out of memory.
-+     */
-+    if ((uintptr_t(region) + (length - 1)) & 0xffff800000000000) {
-+        JS_ALWAYS_TRUE(0 == munmap(region, length));
-+        return MAP_FAILED;
-+    }
-+    return region;
-+#elif defined(__aarch64__)
-+   /*
-+    * There might be similar virtual address issue on arm64 which depends on
-+    * hardware and kernel configurations. But the work around is slightly
-+    * different due to the different mmap behavior.
-+    *
-+    * TODO: Merge with the above code block if this implementation works for
-+    * ia64 and sparc64.
-+    */
-+    const uintptr_t start = (uintptr_t)(0x0000070000000000UL);
-+    const uintptr_t end   = (uintptr_t)(0x0000800000000000UL);
-+    const uintptr_t step  = ChunkSize;
-+   /*
-+    * Optimization options if there are too many retries in practice:
-+    * 1. Examine /proc/self/maps to find an available address. This file is
-+    *    not always available, however. In addition, even if we examine
-+    *    /proc/self/maps, we may still need to retry several times due to
-+    *    racing with other threads.
-+    * 2. Use a global/static variable with lock to track the addresses we have
-+    *    allocated or tried.
-+    */
-+    uintptr_t hint;
-+    void* region = MAP_FAILED;
-+    for (hint = start; region == MAP_FAILED && hint + length <= end; hint += step) {
-+        region = mmap((void*)hint, length, prot, flags, fd, offset);
-+        if (region != MAP_FAILED) {
-+            if ((uintptr_t(region) + (length - 1)) & 0xffff800000000000) {
-+                if (munmap(region, length)) {
-+                    MOZ_ASSERT(errno == ENOMEM);
-+                }
-+                region = MAP_FAILED;
-+            }
-+        }
-+    }
-+    return region == MAP_FAILED ? NULL : region;
-+#else
-+    return mmap(NULL, length, prot, flags, fd, offset);
-+#endif
-+}
-+
- void *
- MapAlignedPages(size_t size, size_t alignment)
- {
-@@ -322,12 +391,12 @@
- 
-     /* Special case: If we want page alignment, no further work is needed. */
-     if (alignment == PageSize) {
--        return mmap(NULL, size, prot, flags, -1, 0);
-+        return MapMemory(size, prot, flags, -1, 0);
-     }
- 
-     /* Overallocate and unmap the region's edges. */
-     size_t reqSize = Min(size + 2 * alignment, 2 * size);
--    void *region = mmap(NULL, reqSize, prot, flags, -1, 0);
-+    void *region = MapMemory(reqSize, prot, flags, -1, 0);
-     if (region == MAP_FAILED)
-         return NULL;
-