Re: [patch 1/3] x86/msi: Make irq_retrigger() functional for posted MSI
From: Thomas Gleixner
Date: Tue Nov 25 2025 - 14:04:43 EST
On Tue, Nov 25 2025 at 18:54, Luigi Rizzo wrote:
> On Tue, Nov 25, 2025 at 11:20 AM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>>
>> Luigi reported that retriggering a posted MSI interrupt does not work
>> correctly.
>> [...]
>>
>> So instead of playing games with the PIR, this can be actually solved
>> for both cases by:
>>
>> 1) Keeping track of the posted interrupt vector handler state
>
> Tangential comment, but I see that this patch uses this_cpu_read()/write()
> whereas the rest of the file uses __this_cpu_read()/write()
You're right. I've missed that. Let me redo it.