qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v4 1/9] ppc/xics: account correct irq status


From: David Gibson
Subject: Re: [Qemu-devel] [PATCH v4 1/9] ppc/xics: account correct irq status
Date: Wed, 21 Sep 2016 16:39:52 +1000
User-agent: Mutt/1.7.0 (2016-08-17)

On Mon, Sep 19, 2016 at 11:59:29AM +0530, Nikunj A Dadhania wrote:
> Fix inconsistent irq status, because of this in the trace logs, for e.g.
> LSI status was 0x7, i.e. XICS_STATUS_ASSERTED, XICS_STATUS_SENT and
> XICS_STATUS_REJECTED all set, which did not make sense. So the REJECTED
> would have been set in earlier interrupt cycle, and then asserted and
> sent in this current one.
> 
> Signed-off-by: Nikunj A Dadhania <address@hidden>

It looks like this patch stands on its own, so I've applied it to ppc-for-2.8.

> ---
>  hw/intc/xics.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/intc/xics.c b/hw/intc/xics.c
> index cd48f42..69162f0 100644
> --- a/hw/intc/xics.c
> +++ b/hw/intc/xics.c
> @@ -505,8 +505,11 @@ static void ics_reject(ICSState *ics, int nr)
>      ICSIRQState *irq = ics->irqs + nr - ics->offset;
>  
>      trace_xics_ics_reject(nr, nr - ics->offset);
> -    irq->status |= XICS_STATUS_REJECTED; /* Irrelevant but harmless for LSI 
> */
> -    irq->status &= ~XICS_STATUS_SENT; /* Irrelevant but harmless for MSI */
> +    if (irq->flags & XICS_FLAGS_IRQ_MSI) {
> +        irq->status |= XICS_STATUS_REJECTED;
> +    } else if (irq->flags & XICS_FLAGS_IRQ_LSI) {
> +        irq->status &= ~XICS_STATUS_SENT;
> +    }
>  }
>  
>  static void ics_resend(ICSState *ics)

-- 
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

Attachment: signature.asc
Description: PGP signature


reply via email to

[Prev in Thread] Current Thread [Next in Thread]