I felt unhappy recently because UML was working perfectly well and I had no complaints (except for the absence of skas3 on 2.6.25 hosts). Obviously this was unacceptable.
So I tried out skas4, host+guest (the guest also has your rng patches, time fixes, and SIGWINCH fixes applied). The result: ,---- | Script started on Sun 15 Jun 2008 21:54:41 BST | loki:/mirror/uml# /usr/bin/nice -n -10 su firewall -c "uml-esperi con1=port:163800 con0=fd:0,fd:1 fakeide mem=96M ubd0=/mirror/uml/esperi-root-cow.image,/mirror/uuml/esperi-root.image umid=esperi eth0=tuntap,tap0,02:60:97:79:e2:c1 eth1=tuntap,,tap1" | | Locating the top of the address space ... 0xc0000000 | Core dump limits : | soft - 1024000000 | hard - 1024000000 | 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 for tmpfs mount on /dev/shm...OK | Checking PROT_EXEC mmap in /dev/shm/...OK | Checking for SKAS4 support in the host: | /proc/self/mm ... OK | new_mm ... OK | switching over ... switched back ... OK | PTRACE_SWITCH_MM ... OK | Full CPU fault information in siginfo_t ... OK | Full CPU fault information in PTRACE_GETSIGINFO ... OK | vcpu ... Host TLS support detected | Detected host type: i386 | (GDT indexes 6 to 9) | vcpu returned with event = 1 | Failed `---- Oops. Now it starts searching for skas3 (which isn't there), and things go more pear-shaped: ,---- | Checking for the skas3 patch in the host: | - /proc/mm...not found: No such file or directory | - PTRACE_FAULTINFO... | [1]+ Stopped /usr/bin/nice -n -10 su firewall -c "uml-esperi con1=port:16380 con0=fd:0,fd:1 fakeide mem=96M ubd0=/mirror/uml/esperi-root-cow.image,/mirror/uml/esperi-root.image umid=esperi eth0=tuntap,tap0,02:60:97:79:e2:c1 eth1=tuntap,tap1" `---- fg it, and we see: ,---- | loki:/mirror/uml# fg | /usr/bin/nice -n -10 su firewall -c "uml-esperi con1=port:16380 con0=fd:0,fd:1 fakeide mem=96M ubd0=/mirror/uml/esperi-root-cow.image,/mirror/uml/esperi-root.image umid=esperi eth0=tuntap,tap0,02:60:97:79:e2:c1 eth1=tuntap,tap1" `---- [dead halt until we hit it with a SIGKILL, whereupon it dies] Thus, not only does SKAS4 not work for me, the fallback to SKAS0 doesn't seem to be working. Is the SKAS4 patch supposed to work on x86-32 yet? (Without the skas4 patch on the guest, everything works fine, SKAS0ing happily.) ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
