[Xen-devel] bug fix patch

[Kip Macy <kip.macy@xxxxxxxxx>]

The following patch fixes 3 recent regressions and works around a 4th.

- when debugger trap entry was re-factored the new code neglected to
clear the trace bit in eflags on a trace trap, xc_ptrace now does that
in user-land before continuing

- a merge somewhere along the line removed a validation of the info
pointer in xc_domain_getfullinfo thus causing a seg fault when called
without info (xc_ptrace only wants the cpu context)

- the page not validated case in get_page_type needs to be last, in
the shadow mode code merge it was moved before the general type
checking case - when one tried to do an L2 pin on a page with a
self-reference xen would spin forever in cpu_relax. This patch returns
it to the last case.

 - xen has started to use anonymous unions - this is not c99
compliant. As a workaround freebsd is no longer compiled with -std=c99


http://www.fsmware.com/xen/patches/050417/fixes

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