[Xen-bugs] [Bug 758] magic sysrq operation "p" does not work

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=758





------- Comment #2 from ian.campbell@xxxxxxxxxxxxx  2006-11-02 01:15 -------
The reason that no registers are passed to handle_sysrq() is that xm sysrq is
implemented as a xenstore watch and hence occurs in a kernel thread rather than
an interrupt. Therefore there is no useful register state which we could
include.

The observed behaviour is consistant with other keyboard drivers which have
similar non-interrupt based implementations (e.g. the pSeries virtual console
driver).

If you trigger sysrq with Ctrl-O on the xen console instead then things work as
expected.


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