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From: Eric Auger <eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
To: eric.auger-qxv4g6HH51o@public.gmane.org,
	eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	robin.murphy-5wv7dgnIgG8@public.gmane.org,
	alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	will.deacon-5wv7dgnIgG8@public.gmane.org,
	joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
	tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org,
	jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org,
	marc.zyngier-5wv7dgnIgG8@public.gmane.org,
	christoffer.dall-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Cc: julien.grall-5wv7dgnIgG8@public.gmane.org,
	patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	p.fedin-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	pranav.sawargaonkar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	yehuday-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org
Subject: [PATCH v9 2/8] irqchip/gic-v3-its: ITS advertises MSI_FLAG_IRQ_REMAPPING
Date: Wed,  4 May 2016 15:18:08 +0000	[thread overview]
Message-ID: <1462375094-2390-3-git-send-email-eric.auger@linaro.org> (raw)
In-Reply-To: <1462375094-2390-1-git-send-email-eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>

The ITS is the first ARM MSI controller advertising the new
MSI_FLAG_IRQ_REMAPPING flag. It does so because it supports
interrupt translation service. This HW support offers isolation
of MSIs, feature used when using KVM device passthrough.

Signed-off-by: Eric Auger <eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>

---

v5: new
---
 drivers/irqchip/irq-gic-v3-its-pci-msi.c      | 3 ++-
 drivers/irqchip/irq-gic-v3-its-platform-msi.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-gic-v3-its-pci-msi.c b/drivers/irqchip/irq-gic-v3-its-pci-msi.c
index aee60ed..8223765 100644
--- a/drivers/irqchip/irq-gic-v3-its-pci-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-pci-msi.c
@@ -96,7 +96,8 @@ static struct msi_domain_ops its_pci_msi_ops = {
 
 static struct msi_domain_info its_pci_msi_domain_info = {
 	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-		   MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX),
+		   MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX |
+		   MSI_FLAG_IRQ_REMAPPING),
 	.ops	= &its_pci_msi_ops,
 	.chip	= &its_msi_irq_chip,
 };
diff --git a/drivers/irqchip/irq-gic-v3-its-platform-msi.c b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
index 470b4aa..8c0d69d 100644
--- a/drivers/irqchip/irq-gic-v3-its-platform-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
@@ -63,7 +63,8 @@ static struct msi_domain_ops its_pmsi_ops = {
 };
 
 static struct msi_domain_info its_pmsi_domain_info = {
-	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
+	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
+		   MSI_FLAG_IRQ_REMAPPING),
 	.ops	= &its_pmsi_ops,
 	.chip	= &its_pmsi_irq_chip,
 };
-- 
1.9.1

  parent reply	other threads:[~2016-05-04 15:18 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-04 15:18 [PATCH v9 0/8] KVM PCIe/MSI passthrough on ARM/ARM64: kernel part 2/3: msi changes Eric Auger
     [not found] ` <1462375094-2390-1-git-send-email-eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-05-04 15:18   ` [PATCH v9 1/8] genirq/msi: Add a new MSI_FLAG_IRQ_REMAPPING flag Eric Auger
2016-05-04 15:18   ` Eric Auger [this message]
2016-05-04 15:18   ` [PATCH v9 3/8] genirq/msi: export msi_get_domain_info Eric Auger
2016-05-04 15:18   ` [PATCH v9 4/8] genirq/msi: msi_compose wrapper Eric Auger
2016-05-04 15:18   ` [PATCH v9 5/8] genirq/irq: introduce msi_doorbell_info Eric Auger
2016-05-04 15:18   ` [PATCH v9 6/8] irqchip/gicv2m: implement msi_doorbell_info callback Eric Auger
2016-05-04 15:18   ` [PATCH v9 8/8] genirq/msi: use the MSI doorbell's IOVA when requested Eric Auger
2016-05-05 17:44   ` [PATCH v9 0/8] KVM PCIe/MSI passthrough on ARM/ARM64: kernel part 2/3: msi changes Chalamarla, Tirumalesh
     [not found]     ` <9C17BA6B-7304-47CA-A287-77FB41D96AD3-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
2016-05-09  7:48       ` Eric Auger
2016-05-09 15:23         ` Chalamarla, Tirumalesh
     [not found]           ` <50F1DA1B-3760-474F-A401-43AA26A5F6B6-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
2016-05-10  7:34             ` Eric Auger
     [not found]               ` <57318F20.4010103-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-05-10 14:35                 ` Chalamarla, Tirumalesh
2016-05-04 15:18 ` [PATCH v9 7/8] genirq/msi: map/unmap the MSI doorbells on msi_domain_alloc/free_irqs Eric Auger

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