On Tue, 2006-07-18 at 00:00 -0700, Chris Wright wrote: > +#ifndef CONFIG_XEN > movl %cr0, %eax > testl $0x4, %eax # EM (math emulation bit) > - jne device_not_available_emulate > - preempt_stop > - call math_state_restore > - jmp ret_from_exception > -device_not_available_emulate: > + je device_available_emulate > pushl $0 # temporary storage for ORIG_EIP > CFI_ADJUST_CFA_OFFSET 4 > call math_emulate > addl $4, %esp > CFI_ADJUST_CFA_OFFSET -4 > + jmp ret_from_exception > +device_available_emulate: > +#endif Hi, can you explain what this chunk is for? It appears to be for the non-xen case due to the ifndef, yet it seems to visibly change the code for that... that deserves an explanation for sure ... Greetings, Arjan van de Ven
