Re: [PATCH v2 3/4] x86/entry: Disable IA32 syscall if ia32_disabled is true

[Nikolay Borisov]

On 9.06.23 г. 19:03 ч., Nikolay Borisov wrote:
>

<snip>

> > > @@ -226,6 +226,13 @@ void __init idt_setup_early_traps(void)
> > >   void __init idt_setup_traps(void)
> > >   {
> > >       idt_setup_from_table(idt_table, def_idts, ARRAY_SIZE(def_idts), 
> > > true);
> > > +
> > > +    if (IS_ENABLED(CONFIG_IA32_EMULATION) && ia32_disabled) {
> >
> > Ditto.
>
> This actually doesn't fail, because if IA32_EMULATION is n that 
> conditional expands to 'if (0 && ia32_disabled)' which is eliminated by 
> the compiler.

Forget this one, it works because I made ia32_disabled always compiled, 
hoowever, the problem in syscall_init() remains because now 
entry_SYSCALL_compat is also compiled in iff CONFIG_IA32_EMULATION is 
selected.

<snip>