On 28/05/2020 13:33, Jan Beulich wrote:
> On 27.05.2020 21:18, Andrew Cooper wrote:
>> --- a/xen/arch/x86/traps.c
>> +++ b/xen/arch/x86/traps.c
>> @@ -365,20 +365,15 @@ static void show_guest_stack(struct vcpu *v, const
>> struct cpu_user_regs *regs)
>> /*
>> * Notes for get_stack_trace_bottom(
On 27.05.2020 21:18, Andrew Cooper wrote:
> --- a/xen/arch/x86/traps.c
> +++ b/xen/arch/x86/traps.c
> @@ -365,20 +365,15 @@ static void show_guest_stack(struct vcpu *v, const
> struct cpu_user_regs *regs)
> /*
> * Notes for get_stack_trace_bottom() and get_stack_dump_bottom()
> *
> - * Stack
We have two free pages in the current stack. A useful property of shadow
stacks and regular stacks is that they act as each others guard pages as far
as OoB writes go.
Move the regular IST stacks up by one page, to allow their shadow stack page
to be in slot 0. The primary shadow stack uses slot
