On Tue, Mar 13, 2018 at 01:59:24PM -0700, Thomas Garnier wrote: > @@ -1576,7 +1578,9 @@ first_nmi: > addq $8, (%rsp) /* Fix up RSP */ > pushfq /* RFLAGS */ > pushq $__KERNEL_CS /* CS */ > - pushq $1f /* RIP */ > + pushq %rax /* Support Position Independent Code */ > + leaq 1f(%rip), %rax /* RIP */ > + xchgq %rax, (%rsp) /* Restore RAX, put 1f */ > iretq /* continues at repeat_nmi below */ > UNWIND_HINT_IRET_REGS > 1:
Urgh, xchg with a memop has an implicit LOCK prefix. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
