Why GICD_ITARGETSR is not used by Linux

[Li Chen]

Hi Russell,
 ---- On Wed, 21 Sep 2022 09:26:11 +0200  Russell King (Oracle)  wrote --- 
 > On Wed, Sep 21, 2022 at 04:34:32AM +0200, Li Chen wrote:
 > > Hi Russell,
 > > 
 > >  ---- On Tue, 20 Sep 2022 12:14:24 +0200  Russell King (Oracle)  wrote --- 
 > >  > On Tue, Sep 20, 2022 at 11:09:38AM +0100, Russell King (Oracle) wrote:
 > >  > Oh, I just remembered an additional detail. There was the irqbalance
 > >  > daemon that used to work at that time which would do the distribution
 > >  > from userspace - and it knew various policies about interrupts that
 > >  > were found to be beneficial on x86. Such as not moving busy ethernet
 > >  > interrupts amongst the CPUs due to networking paths being "hot" in the
 > >  > cache, vs other interrupts where that didn't matter so much.
 > > 
 > > Can you help paste the irqbalance daemon project link? I want to learn more 
 > > about it, thanks.
 > 
 > Searching google for "irqbalance source" gives me as the first link:
 > 
 > https://github.com/Irqbalance/irqbalance

Ah, I wasn't aware that the project itself is just a daemon, thanks!