chromeos-base/nnapi/files/00004-libfmq-page-size.patch

diff --git a/platform2/aosp/system/libfmq/include/fmq/MessageQueueBase.h b/platform2/aosp/system/libfmq/include/fmq/MessageQueueBase.h
index d24dc7c..aab6b3e 100644
--- a/platform2/aosp/system/libfmq/include/fmq/MessageQueueBase.h
+++ b/platform2/aosp/system/libfmq/include/fmq/MessageQueueBase.h
@@ -20,6 +20,7 @@
 #include <cutils/ashmem.h>
 #include <fmq/EventFlag.h>
 #include <sys/mman.h>
+#include <unistd.h>
 #include <sys/user.h>
 #include <utils/Log.h>
 #include <utils/SystemClock.h>
@@ -244,6 +245,10 @@ struct MessageQueueBase {
     struct MemRegion {
         MemRegion() : MemRegion(nullptr, 0) {}
 
+        MemRegion(const MemRegion& other) {
+            *this = other;
+        }
+
         MemRegion(T* base, size_t size) : address(base), length(size) {}
 
         MemRegion& operator=(const MemRegion& other) {
@@ -674,15 +679,16 @@ MessageQueueBase<MQDescriptorType, T, flavor>::MessageQueueBase(size_t numElemen
      * in the grantorDescriptor will be word aligned.
      */
     size_t kAshmemSizePageAligned;
+    size_t page_size = static_cast<size_t>(sysconf(_SC_PAGE_SIZE));
     if (bufferFd != -1) {
         // Allocate read counter and write counter only. User-supplied memory will be used for the
         // ringbuffer.
-        kAshmemSizePageAligned = (kMetaDataSize + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
+        kAshmemSizePageAligned = (kMetaDataSize + page_size - 1) & ~(page_size - 1);
     } else {
         // Allocate ringbuffer, read counter and write counter.
         kAshmemSizePageAligned = (hardware::details::alignToWordBoundary(kQueueSizeBytes) +
-                                  kMetaDataSize + PAGE_SIZE - 1) &
-                                 ~(PAGE_SIZE - 1);
+                                  kMetaDataSize + page_size - 1) &
+                                 ~(page_size - 1);
     }
 
     /*
@@ -1236,7 +1242,8 @@ void* MessageQueueBase<MQDescriptorType, T, flavor>::mapGrantorDescr(uint32_t gr
     /*
      * Offset for mmap must be a multiple of PAGE_SIZE.
      */
-    int mapOffset = (grantors[grantorIdx].offset / PAGE_SIZE) * PAGE_SIZE;
+    size_t page_size = static_cast<size_t>(sysconf(_SC_PAGE_SIZE));
+    int mapOffset = (grantors[grantorIdx].offset / page_size) * page_size;
     int mapLength = grantors[grantorIdx].offset - mapOffset + grantors[grantorIdx].extent;
 
     void* address = mmap(0, mapLength, PROT_READ | PROT_WRITE, MAP_SHARED, handle->data[fdIndex],
@@ -1256,7 +1263,8 @@ void MessageQueueBase<MQDescriptorType, T, flavor>::unmapGrantorDescr(void* addr
         return;
     }
 
-    int mapOffset = (grantors[grantorIdx].offset / PAGE_SIZE) * PAGE_SIZE;
+    size_t page_size = static_cast<size_t>(sysconf(_SC_PAGE_SIZE));
+    int mapOffset = (grantors[grantorIdx].offset / page_size) * page_size;
     int mapLength = grantors[grantorIdx].offset - mapOffset + grantors[grantorIdx].extent;
     void* baseAddress =
             reinterpret_cast<uint8_t*>(address) - (grantors[grantorIdx].offset - mapOffset);