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| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-18 09:42:19 (GMT) |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-15 17:33:30 (GMT) |
| commit | c3581039b6c51a778a70accec53a9bb7ad9a4d32 (patch) | |
| tree | 6816e82f1a59fe3d4fbf8c291d3f52598531c50c /usr | |
| parent | d8005e6b95268cbb50db3773d5f180c32a9434fe (diff) | |
| download | linux-c3581039b6c51a778a70accec53a9bb7ad9a4d32.tar.xz | |
ARC: Signal handling
Includes following fixes courtesy review by Al-Viro
* Tracer poke to Callee-regs were lost
Before going off into do_signal( ) we save the user-mode callee regs
(as they are not saved by default as part of pt_regs). This is to make
sure that that a Tracer (if tracing related signal) is able to do likes
of PEEKUSR(callee-reg).
However in return path we were simply discarding the user-mode callee
regs, which would break a POKEUSR(callee-reg) from a tracer.
* Issue related to multiple syscall restarts are addressed in next patch
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Acked-by: Jonas Bonn <jonas@southpole.se>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions