lightrec: must use MAP_FIXED_NOREPLACE

otherwise it'll destroy existing mappings

notaz/pcsx_rearmed#109
CC @pcercuei

diff --git a/libpcsxcore/lightrec/mem.c b/libpcsxcore/lightrec/mem.c
index 91bd908..efabdb0 100644 (file)
--- a/libpcsxcore/lightrec/mem.c
+++ b/libpcsxcore/lightrec/mem.c
@@ -93,7 +93,7 @@ static int lightrec_mmap_ram(bool hugetlb)
                for (j = 0; j < 4; j++) {
                        map = mmap_huge((void *)(base + j * 0x200000),
                                        0x200000, PROT_READ | PROT_WRITE,
-                                       MAP_SHARED | MAP_FIXED, memfd, 0);
+                                       MAP_SHARED | MAP_FIXED_NOREPLACE, memfd, 0);
                        if (map == MAP_FAILED)
                                break;
                }
@@ -142,7 +142,7 @@ int lightrec_init_mmap(void)
 
        map = mmap((void *)(base + 0x1f000000), 0x10000,
                   PROT_READ | PROT_WRITE,
-                  MAP_PRIVATE | MAP_FIXED_NOREPLACE | MAP_ANONYMOUS, 0, 0);
+                  MAP_PRIVATE | MAP_FIXED_NOREPLACE | MAP_ANONYMOUS, -1, 0);
        if (map == MAP_FAILED) {
                err = -EINVAL;
                fprintf(stderr, "Unable to mmap parallel port\n");
@@ -153,7 +153,7 @@ int lightrec_init_mmap(void)
 
        map = mmap_huge((void *)(base + 0x1fc00000), 0x200000,
                        PROT_READ | PROT_WRITE,
-                       MAP_PRIVATE | MAP_FIXED_NOREPLACE | MAP_ANONYMOUS, 0, 0);
+                       MAP_PRIVATE | MAP_FIXED_NOREPLACE | MAP_ANONYMOUS, -1, 0);
        if (map == MAP_FAILED) {
                err = -EINVAL;
                fprintf(stderr, "Unable to mmap BIOS\n");
@@ -176,7 +176,7 @@ int lightrec_init_mmap(void)
        map = mmap_huge((void *)(base + 0x800000), CODE_BUFFER_SIZE,
                        PROT_EXEC | PROT_READ | PROT_WRITE,
                        MAP_PRIVATE | MAP_FIXED_NOREPLACE | MAP_ANONYMOUS,
-                       0, 0);
+                       -1, 0);
        if (map == MAP_FAILED) {
                err = -EINVAL;
                fprintf(stderr, "Unable to mmap code buffer\n");