Re: [PATCH] x86/HPET: channel handling in hpet_broadcast_resume()

["Roger Pau Monné" <roger.pau@citrix.com>]

On Tue, Apr 07, 2026 at 03:33:12PM +0200, Jan Beulich wrote:
> The per-channel ENABLE bit is to solely be driven by hpet_enable_channel()
> and hpet_msi_{,un}mask(). It doesn't need setting immediately. Except for
> the (possible) channel put in legacy mode we don't do so during boot
> either.
> 
> Instead reset ->arch.cpu_mask, to avoid msi_compose_msg() yielding an
> all-zero message (when the passed in CPU mask has no online CPUs). Nothing
> would later call msi_compose_msg() / hpet_msi_write(), and hence nothing
> would later produce a well-formed message template in
> hpet_events[].msi.msg.
> 
> Fixes: 15aa6c67486c ("amd iommu: use base platform MSI implementation")
> Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> Tested-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

Acked-by: Roger Pau Monné <roger.pau@citrix.com>

I think you can adjust the now redundant irq_to_desc() to use dist as
Teddy noted?

Thanks, Roger.