Re: [PATCH] xen/x86: fix PV trap handling on secondary processors

From: Jan Beulich
Date: Fri Sep 17 2021 - 02:40:48 EST


On 17.09.2021 03:34, Boris Ostrovsky wrote:
>
> On 9/16/21 11:04 AM, Jan Beulich wrote:
>> {
>> const struct desc_ptr *desc = this_cpu_ptr(&idt_desc);
>> + unsigned i, count = (desc->size + 1) / sizeof(gate_desc);
>>
>> - xen_convert_trap_info(desc, traps);
>
>
> Can you instead add a boolean parameter to xen_convert_trap_info() to indicate whether to skip empty entries? That will avoid (almost) duplicating the code.

I can, sure, but I specifically didn't, as the result is going to be less
readable imo. Instead I was considering to fold xen_convert_trap_info()
into its only remaining caller. Yet if you're convinced adding the
parameter is the way to do, I will go that route. But please confirm.

Jan