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Pushing stuff onto the stack on x86-64 when we do not specify
-mno-red-zone is unsafe. Since the complicated asm is due to register
pressure on i386, we simply implement an all-new simpler alternative
for x86-64.
Signed-off-by: Keir Fraser <keir@xen.org>
Acked-by: Jan Beulich <jbeulich@novell.com>
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Signed-off-by: Keir Fraser <keir@xen.org>
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check_for_xen() should return xen version rather than
boolean true if signature XenVMM is found.
Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
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- Usage info
- Quiesce normal output
- Affect exit status if running in unexpected context
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
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F12 introduces a tool to automatically report bugs when there are core
dumps. Since xen-detect relies on fork+waitpid in order to trap a
SIGILL from a child, every time someone runs xen-detect on a bare
metal kernel a bug is reported into Red Hat's Bugzilla. :-)
However, even without this contingent need, leaving core dumps around
is not nice. So this patch just traps SIGILL using
signal/sentjmp/longjmp, without the need to fork.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
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Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
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Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
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Signed-off-by: Keir Fraser <keir@xensource.com>
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Xen PV or HVM contexts, using the Xen CPUID extensions.
Signed-off-by: Keir Fraser <keir@xensource.com>
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