| @@ -0,0 +1,32 @@
+Index: qemu/linux-user/mmap.c
+================================================================================
+--- qemu/linux-user/mmap.c
++++ qemu/linux-user/mmap.c
+@@ -153,6 +153,9 @@
+ return 0;
+ }
+
++#define SNDRV_PCM_MMAP_OFFSET_STATUS 0x80000000
++#define SNDRV_PCM_MMAP_OFFSET_CONTROL 0x81000000
++
+ /* NOTE: all the constants are the HOST ones */
+ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
+ int flags, int fd, abi_ulong offset)
+@@ -194,6 +197,17 @@
+ }
+ #endif
+
++ /* Alsa tries to communcate with the kernel via mmap. This usually
++ * is a good idea when user- and kernelspace are running on the
++ * same architecture but does not work out when not. To make alsa
++ * not to use mmap, we can just have it fail on the mmap calls that
++ * would initiate this.
++ */
++ if(offset == SNDRV_PCM_MMAP_OFFSET_STATUS || offset == SNDRV_PCM_MMAP_OFFSET_CONTROL) {
++ errno = EINVAL;
++ return -1;
++ }
++
+ if (offset & ~TARGET_PAGE_MASK) {
+ errno = EINVAL;
+ return -1;
|
