>
> + /* Reload CS with a value that is within our GDT. We need to do this
> + * if we were loaded by a 64 bit bootloader that happened to use a
> + * CS that is larger than the GDT limit. This is true if we came here
> + * from kexec running under Xen.
> + */
> + movq %rsp, %rdx
> + movq $__KERNEL_DS, %rax
> + pushq %rax /* SS */
> + pushq %rdx /* RSP */
> + movq $__KERNEL_CS, %rax
> + movq $cs_reloaded, %rdx
> + pushq %rax /* CS */
> + pushq %rdx /* RIP */
> + lretq
Can't you just use a normal far jump? That might be simpler.
-Andi
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