Re: [Xen-devel] [PATCH ARM v8 2/4] mini-os: arm: interrupt controller
On Fri, 2014-11-14 at 11:33 +, Julien Grall wrote: Though IIRC, mini-os for ARM is not yet SMP. It's difficult to see what needs to be done to support code that doesn't exist yet. For example, would gic_init be called once, or once per processor? Before or after the other processors are started? Some part of the code maybe necessary: setting PPIs/SGIs... You can give a look to Linux/Xen GIC drivers to have an idea on what is necessary. This would be necessary as part of the port of mini-os to support SMP. I don't see why it should be necessary now, going to SMP is surely going to require a bunch of refactoring in other places too (Xen itself certainly did). Ian. ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH ARM v8 2/4] mini-os: arm: interrupt controller
On 14/11/2014 11:42, Ian Campbell wrote: On Fri, 2014-11-14 at 11:33 +, Julien Grall wrote: Though IIRC, mini-os for ARM is not yet SMP. It's difficult to see what needs to be done to support code that doesn't exist yet. For example, would gic_init be called once, or once per processor? Before or after the other processors are started? Some part of the code maybe necessary: setting PPIs/SGIs... You can give a look to Linux/Xen GIC drivers to have an idea on what is necessary. This would be necessary as part of the port of mini-os to support SMP. I don't see why it should be necessary now, going to SMP is surely going to require a bunch of refactoring in other places too (Xen itself certainly did). I just answered to his question. I didn't asked for changing this code right now. -- Julien Grall ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
