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From: Anthony PERARD <anthony@xenproject.org>
To: Roger Pau Monne <roger.pau@citrix.com>
Cc: qemu-devel@nongnu.org,
	Stefano Stabellini <sstabellini@kernel.org>,
	Paul Durrant <paul@xen.org>,
	"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
	xen-devel@lists.xenproject.org
Subject: Re: [PATCH] hw/xen: pass PCI domain to xc_physdev_map_pirq_msi()
Date: Tue, 21 Oct 2025 15:55:05 +0200	[thread overview]
Message-ID: <aPeQuREzCMBa8VXo@l14> (raw)
In-Reply-To: <20251017155136.16540-1-roger.pau@citrix.com>

On Fri, Oct 17, 2025 at 05:51:36PM +0200, Roger Pau Monne wrote:
> It's currently impossible for passthrough devices on segment different than
> 0 to work correctly, as the PCI domain is not provided to
> xc_physdev_map_pirq_msi(), and hence it's unconditionally assumed that all
> devices are on segment 0.
> 
> Adjust the call to xc_physdev_map_pirq_msi() to pass the PCI domain in the
> high 16bits of the bus parameter.  On versions of Xen where this is not
> supported the passed segment will be ignored and assume to be 0, no worse
> than the current state.
> 
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>

Reviewed-by: Anthony PERARD <anthony.perard@vates.tech>

Thanks,

-- 
Anthony PERARD


  parent reply	other threads:[~2025-10-21 13:55 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-17 15:51 [PATCH] hw/xen: pass PCI domain to xc_physdev_map_pirq_msi() Roger Pau Monne
2025-10-18  4:50 ` Frediano Ziglio
2025-10-21 13:55 ` Anthony PERARD [this message]
2025-10-21 13:58 ` Edgar E. Iglesias
2025-10-21 18:17 ` Philippe Mathieu-Daudé
2025-10-23  8:55   ` Roger Pau Monné

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