[uml-devel] Patchset to implement PTRACE_SYSEMU_SINGLESTEP

[Bodo S. <bst...@fu...>]

Attached are several patches. Four of them (patch-2.6.*-skas-v7-*) implement
PTRACE_SYSEMU_SINGLESTEP in the host. They are based on
linux-2.6.7-vanilla + host-skas3-2.6.7-v7.patch (resp. the 2.6.9 versions).
The "-reorganize" patches are a rework of the current patch without changing
the functionality. The "add-SYSEMU_SINGLESTEP" then implement the new features.
Please note: the differences between 2.6.7 and 2.6.9 are dependent on the
different handling of syscall singlestepping in the two versions.

To have UML using the new feature, there are two further patches named
patch-SYSEMU_SINGLESTEP-*. They are based on linux-2.6.9-vanilla +
all bb2-patches + patch-sysemu-tt + patch-fix-uml-hang-on-2.6.9-host.
To have all the patches complete, the latter two are attached also.

I tested on host 2.6.7 and host 2.6.9 with SKAS and TT mode. Currently I don't
know any problem with it.

Bodo

BTW: Today I tried the first time since weeks to do a reboot in SKAS. It simply
      exits UML, as it did weeks ago. Is there anybody involved with that problem?