x86/xen: use capabilities instead of fake cpuid values for acpi

[linux-block.git] / arch / Kconfig

diff --git a/arch/Kconfig b/arch/Kconfig
index cd211a14a88f7774bec3abbe3b371f0302e624a0..c4d6833aacd98a75a226d337be0d6fb67d80fcd0 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -700,6 +700,13 @@ config ARCH_MMAP_RND_COMPAT_BITS
          This value can be changed after boot using the
          /proc/sys/vm/mmap_rnd_compat_bits tunable
 
+config HAVE_ARCH_COMPAT_MMAP_BASES
+       bool
+       help
+         This allows 64bit applications to invoke 32-bit mmap() syscall
+         and vice-versa 32-bit applications to call 64-bit mmap().
+         Required for applications doing different bitness syscalls.
+
 config HAVE_COPY_THREAD_TLS
        bool
        help