x86, paravirt, xen: Remove the 64-bit ->irq_enable_sysexit() pvop
We don't use irq_enable_sysexit on 64-bit kernels any more. Remove all the paravirt and Xen machinery to support it on 64-bit kernels. Tested-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: NAndy Lutomirski <luto@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Denys Vlasenko <vda.linux@googlemail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/8a03355698fe5b94194e9e7360f19f91c1b2cf1f.1428100853.git.luto@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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