On Thu, Jul 12, 2018 at 01:49:13PM -0700, Andy Lutomirski wrote: > > On Jul 11, 2018, at 4:29 AM, Joerg Roedel <joro@xxxxxxxxxx> wrote: > > /* Offset from the sysenter stack to tss.sp0 */ > > - DEFINE(TSS_entry_stack, offsetof(struct cpu_entry_area, tss.x86_tss.sp0) - > > + DEFINE(TSS_entry_stack, offsetof(struct cpu_entry_area, tss.x86_tss.sp1) - > > offsetofend(struct cpu_entry_area, entry_stack_page.stack)); > > > > The code reads differently. Did you perhaps mean TSS_task_stack? Well, the offset name came from TSS_sysenter_sp0, which was the offset from the sysenter_sp0 (==sysenter-stack) to the task stack in TSS, now sysenter_sp0 became entry_stack, because its used for all entry points and not only sysenter. So with the old convention the naming makes still sense, no? > Also, the “top of task stack” is a bit weird on 32-bit due to vm86. > Can you document *exactly* what goes in sp1? Will do, thanks for your feedback! Joerg
