X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=libpcsxcore%2Fpsxmem.c;h=389bdba5166e491e345080abd03a448577f5faeb;hb=63b05f75121cffb317e0ef68fa90a00c7a9aabdb;hp=54219ae051543622e5da6d0338840c0042eff60e;hpb=826ba56b077130624f0b4c00f57ed7362449e5aa;p=pcsx_rearmed.git

diff --git a/libpcsxcore/psxmem.c b/libpcsxcore/psxmem.c
index 54219ae0..389bdba5 100644
--- a/libpcsxcore/psxmem.c
+++ b/libpcsxcore/psxmem.c
@@ -44,15 +44,39 @@
 static void * psxMapDefault(unsigned long addr, size_t size,
 			    int is_fixed, enum psxMapTag tag)
 {
+	void *ptr;
+#if !P_HAVE_MMAP
+	ptr = calloc(1, size);
+	return ptr ? ptr : MAP_FAILED;
+#else
 	int flags = MAP_PRIVATE | MAP_ANONYMOUS;
 
-	return mmap((void *)(uintptr_t)addr, size,
+	ptr = mmap((void *)(uintptr_t)addr, size,
 		    PROT_READ | PROT_WRITE, flags, -1, 0);
+#ifdef MADV_HUGEPAGE
+	if (size >= 2*1024*1024) {
+		if (ptr != MAP_FAILED && ((uintptr_t)ptr & (2*1024*1024 - 1))) {
+			// try to manually realign assuming bottom-to-top alloc
+			munmap(ptr, size);
+			addr = (uintptr_t)ptr & ~(2*1024*1024 - 1);
+			ptr = mmap((void *)(uintptr_t)addr, size,
+				PROT_READ | PROT_WRITE, flags, -1, 0);
+		}
+		if (ptr != MAP_FAILED)
+			madvise(ptr, size, MADV_HUGEPAGE);
+	}
+#endif
+	return ptr;
+#endif
 }
 
 static void psxUnmapDefault(void *ptr, size_t size, enum psxMapTag tag)
 {
+#if !P_HAVE_MMAP
+	free(ptr);
+#else
 	munmap(ptr, size);
+#endif
 }
 
 void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed,