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Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interru
From: |
David Gibson |
Subject: |
Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source |
Date: |
Tue, 25 Jul 2017 22:24:06 +1000 |
User-agent: |
Mutt/1.8.3 (2017-05-23) |
On Tue, Jul 25, 2017 at 03:47:37PM +1000, Benjamin Herrenschmidt wrote:
> On Tue, 2017-07-25 at 14:18 +1000, David Gibson wrote:
> > > Well, at this point I think nothing will set that flag.... It's there
> > > for workaround around HW bugs on some chips. At least in full emu it
> > > shouldn't happen unless we try to emulate those bugs. Hopefully direct
> > > MMIO will just work.
> >
> > Hm. That doesn't seem like a good match for a per-irq state
> > structure.
>
> The flag is returned to the guest on a per-IRQ basis, so are the LSI
> etc... flags, but at the HW level, indeed, they correspond to
> attributes of blocks of interrupts.
>
> It might be easier in qemu to keep that in the per-source flags
> though.
Yeah, I think so.
> Especially when we start having actual HW interrupts under the
> hood with KVM. it's easier to keep the state self contained
> for each of them.
>
> Ben.
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, (continued)
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, David Gibson, 2017/07/24
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Benjamin Herrenschmidt, 2017/07/24
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, David Gibson, 2017/07/24
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Benjamin Herrenschmidt, 2017/07/24
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Cédric Le Goater, 2017/07/24
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, David Gibson, 2017/07/25
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Benjamin Herrenschmidt, 2017/07/25
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, David Gibson, 2017/07/25
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Benjamin Herrenschmidt, 2017/07/25
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Cédric Le Goater, 2017/07/25
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source,
David Gibson <=
- Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source, Cédric Le Goater, 2017/07/25
[Qemu-ppc] [RFC PATCH 09/26] ppc/xive: add an overall memory region for the ESBs, Cédric Le Goater, 2017/07/05
Re: [Qemu-ppc] [RFC PATCH 09/26] ppc/xive: add an overall memory region for the ESBs, Cédric Le Goater, 2017/07/24
Re: [Qemu-ppc] [RFC PATCH 09/26] ppc/xive: add an overall memory region for the ESBs, David Gibson, 2017/07/24
Re: [Qemu-ppc] [RFC PATCH 09/26] ppc/xive: add an overall memory region for the ESBs, Cédric Le Goater, 2017/07/25