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Subject[PATCH] x86-64: adjust double fault handling
Since a double fault always implies that kernel data structures are
corrupt, this fault should neither be handed to user mode handling,
nor should the handler allow resuming the faulting code stream (since
architecturally this isn't a fault, but an abort).

Note that this slightly depends on the previously submitted patch
adjusting the prototype of notify_die() (a compiler warning will
result
without that other patch).

From: Jan Beulich <jbeulich@novell.com>

(actual patch attached)

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