From: David Woodhouse <dwmw2@infradead.org>
To: x86@kernel.org
Cc: linux-hyperv@vger.kernel.org, kvm <kvm@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
iommu@lists.linux-foundation.org, maz@misterjones.org,
Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH 5/9] iommu/hyper-v: Implement select() method on remapping irqdomain
Date: Tue, 13 Oct 2020 09:11:35 +0100 [thread overview]
Message-ID: <20201013081139.1558200-6-dwmw2@infradead.org> (raw)
In-Reply-To: <20201013081139.1558200-1-dwmw2@infradead.org>
From: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
drivers/iommu/hyperv-iommu.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c
index 37dd485a5640..6a8966fbc3bd 100644
--- a/drivers/iommu/hyperv-iommu.c
+++ b/drivers/iommu/hyperv-iommu.c
@@ -61,6 +61,14 @@ static struct irq_chip hyperv_ir_chip = {
.irq_set_affinity = hyperv_ir_set_affinity,
};
+static int hyperv_irq_remapping_select(struct irq_domain *d,
+ struct irq_fwspec *fwspec,
+ enum irq_domain_bus_token bus_token)
+{
+ /* Claim only the first (and only) I/OAPIC */
+ return x86_fwspec_is_ioapic(fwspec) && fwspec->param[0] == 0;
+}
+
static int hyperv_irq_remapping_alloc(struct irq_domain *domain,
unsigned int virq, unsigned int nr_irqs,
void *arg)
@@ -102,6 +110,7 @@ static void hyperv_irq_remapping_free(struct irq_domain *domain,
}
static const struct irq_domain_ops hyperv_ir_domain_ops = {
+ .select = hyperv_irq_remapping_select,
.alloc = hyperv_irq_remapping_alloc,
.free = hyperv_irq_remapping_free,
};
--
2.26.2
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next prev parent reply other threads:[~2020-10-13 8:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <0de733f6384874d68afba2606119d0d9b1e8b34e.camel@infradead.org>
2020-10-13 8:11 ` [PATCH 0/9] Remove irq_remapping_get_irq_domain() David Woodhouse
2020-10-13 8:11 ` [PATCH 1/9] genirq/irqdomain: Implement get_name() method on irqchip fwnodes David Woodhouse
2020-10-13 8:11 ` [PATCH 2/9] x86/apic: Add select() method on vector irqdomain David Woodhouse
2020-10-13 8:11 ` [PATCH 3/9] iommu/amd: Implement select() method on remapping irqdomain David Woodhouse
2020-10-13 8:11 ` [PATCH 4/9] iommu/vt-d: " David Woodhouse
2020-10-13 8:11 ` David Woodhouse [this message]
2020-10-13 8:11 ` [PATCH 6/9] x86/hpet: Use irq_find_matching_fwspec() to find " David Woodhouse
2020-10-13 8:11 ` [PATCH 7/9] x86/ioapic: " David Woodhouse
2020-10-13 8:11 ` [PATCH 8/9] x86: Kill all traces of irq_remapping_get_irq_domain() David Woodhouse
2020-10-13 8:11 ` [PATCH 9/9] iommu/vt-d: Simplify intel_irq_remapping_select() David Woodhouse
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