Re: [PATCH v2 3/4] x86/entry: Disable IA32 syscall if ia32_disabled is true
From: Nikolay Borisov
Date: Fri Jun 09 2023 - 12:13:46 EST
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>