xen64: set up userspace syscall patch

64-bit userspace expects the vdso to be mapped at a specific fixed
address, which happens to be in the middle of the kernel address
space.  Because we have split user and kernel pagetables, we need to
make special arrangements for the vsyscall mapping to appear in the
kernel part of the user pagetable.

Signed-off-by: Jeremy Fitzhardinge <[email protected]>
Cc: Stephen Tweedie <[email protected]>
Cc: Eduardo Habkost <[email protected]>
Cc: Mark McLoughlin <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions