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Re: [Xen-devel] [PATCH v4 03/13] x86/IRQ: desc->affinity should strictly represent the requested value
- To: Jan Beulich <JBeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Fri, 19 Jul 2019 14:25:40 +0100
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- Cc: Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Fri, 19 Jul 2019 13:25:46 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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On 16/07/2019 08:38, Jan Beulich wrote:
> desc->arch.cpu_mask reflects the actual set of target CPUs. Don't ever
> fiddle with desc->affinity itself, except to store caller requested
> values. Note that assign_irq_vector() now takes a NULL incoming CPU mask
> to mean "all CPUs" now, rather than just "all currently online CPUs".
> This way no further affinity adjustment is needed after onlining further
> CPUs.
>
> This renders both set_native_irq_info() uses (which weren't using proper
> locking anyway) redundant - drop the function altogether.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
There are utf8 encoding problems here, but the patch in 0/$N does look
to be ok.
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