[uml-user] can't debug uml in skas mode

[Liu Yong]

My host OS is linux-2.6.11.8 from kernel.org, whiching running in FC3. My Guest OS is linux-2.6.11.8 patched by uml-2.6.11.8-bs5.patch.bz2. But when I run the command ./linux debug in skas mode. It can't fire up the debug xterm. When I do it in TT mode which is 2.6.9.1.667 in FC3, the debug xterm appears. Here is some information. (1) uname -a Linux shygod 2.6.11.8-skas3-v8 #3 Sat May 21 12:39:15 CST 2005 i686 i686 i386 GNU/Linux   (2) ./linux debug Checking for /proc/mm...found Checking for the skas3 patch in the host...found Checking PROT_EXEC mmap in /tmp...OK Linux version 2.6.11.8-bs5 ([EMAIL PROTECTED]) (gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)) #3 Sat May 21 13:18:25 CST 2005 Built 1 zonelists Kernel command line: root=98:0 PID hash table entries: 256 (order: 8, 4096 bytes) Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory: 29272k available Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Checking for host processor cmov support...Yes Checking for host processor xmm support...No Checking that ptrace can change system call numbers...OK Checking syscall emulation patch for ptrace...OK Checking advanced syscall emulation patch for ptrace...OK Checking that host ptys support output SIGIO...Yes Checking that host ptys support SIGIO on close...No, enabling workaround Checking for /dev/anon on the host...Not available (open failed with errno 2) NET: Registered protocol family 16 mconsole (version 2) initialized on /root/.uml/SV9Zwm/mconsole ..........................   (3) uml .config # # UML-specific options # CONFIG_MODE_TT=y CONFIG_MODE_SKAS=y # CONFIG_64_BIT is not set CONFIG_TOP_ADDR=0xc0000000 # CONFIG_3_LEVEL_PGTABLES is not set CONFIG_ARCH_HAS_SC_SIGNALS=y CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y CONFIG_LD_SCRIPT_STATIC=y CONFIG_NET=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=y CONFIG_HOSTFS=y CONFIG_MCONSOLE=y CONFIG_MCONSOLE_EXEC=y CONFIG_MAGIC_SYSRQ=y # CONFIG_HOST_2G_2G is not set # CONFIG_SMP is not set CONFIG_NEST_LEVEL=0 CONFIG_KERNEL_HALF_GIGS=1 # CONFIG_HIGHMEM is not set CONFIG_KERNEL_STACK_ORDER=2 CONFIG_UML_REAL_TIME_CLOCK=y   I wonder why It can't fire up the debug xterm. Thanks.