Re: [patch V4 part 5 07/31] x86/entry: Provide idtentry_entry/exit_cond_rcu()

Thomas Gleixner
2020-05-12T16:31:28Z

Alexandre Chartre <alexandre.chartre@oracle.com> writes:
> On 5/5/20 3:53 PM, Thomas Gleixner wrote:
>> The pagefault handler cannot use the regular idtentry_enter() because on
>> that invokes rcu_irq_enter() the pagefault was caused in the kernel.
>
> I am struggling to understand this part of the sentence: "because on
> that invokes rcu_irq_enter() the pagefault was caused in the kernel."
>
> Do you mean: "because that invokes rcu_irq_enter() if the pagefault was
> caused in the kernel." ?

Yeah. Wordsalad ...