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[Xen-devel] [PATCH 0/4] x86: don't default to executable mappings

Particularly for the 1:1 mapping it was pointed out that in order to
limit the damage from security issues we should avoid mapping things
executable when they don't need to be.

1: move syscall trampolines off the stack
2: emul: move stubs off the stack
3: move I/O emulation stubs off the stack
4: switch default mapping attributes to non-executable

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

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