search for: hvm_emulate_write

Hi there, I have a question regarding the functionality of x86_emulate_memop (Xen 3.1) or x86_emulate (Xen 3.2) function. This function gets called from sh_page_fault() function which is invoked when Xen receives a page fault. Since I am not clear completely about the emulation operation performed by Xen, I have following questions with a below mentioned scenario? 1) Suppose I have a memory

...ow.x86_emulate_cmpxchg8b( v, addr, old_lo, old_hi, new_lo, new_hi, sh_ctxt); } +#else +#define hvm_emulate_cmpxchg8b NULL +#endif static struct x86_emulate_ops hvm_shadow_emulator_ops = { .read = hvm_emulate_read, .insn_fetch = hvm_emulate_insn_fetch, .write = hvm_emulate_write, .cmpxchg = hvm_emulate_cmpxchg, - .cmpxchg8b = hvm_emulate_cmpxchg8b, + .cmpxchg2 = hvm_emulate_cmpxchg8b, }; static int @@ -352,6 +356,7 @@ pv_emulate_cmpxchg(enum x86_segment seg, v, offset, old, new, bytes, sh_ctxt); } +#ifdef __i386__ static int pv_emulate_c...