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[PATCH v2 5/5] x86: virtio-mmio: support virtio-mmio with MSI for x86
From: |
Zha Bin |
Subject: |
[PATCH v2 5/5] x86: virtio-mmio: support virtio-mmio with MSI for x86 |
Date: |
Mon, 10 Feb 2020 17:05:21 +0800 |
From: Liu Jiang <address@hidden>
virtio-mmio supports a generic MSI irq domain for all archs. This
patch adds the x86 architecture support.
Signed-off-by: Liu Jiang <address@hidden>
Co-developed-by: Zha Bin <address@hidden>
Signed-off-by: Zha Bin <address@hidden>
Co-developed-by: Jing Liu <address@hidden>
Signed-off-by: Jing Liu <address@hidden>
Co-developed-by: Chao Peng <address@hidden>
Signed-off-by: Chao Peng <address@hidden>
---
arch/x86/kernel/apic/msi.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 159bd0c..2fcd602 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -45,7 +45,11 @@ static void __irq_msi_compose_msg(struct irq_cfg *cfg,
struct msi_msg *msg)
MSI_DATA_VECTOR(cfg->vector);
}
-static void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
+/*
+ * x86 PCI-MSI/HPET/DMAR related method.
+ * Also can be used as arch specific method for virtio-mmio MSI.
+ */
+void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
{
__irq_msi_compose_msg(irqd_cfg(data), msg);
}
@@ -166,6 +170,11 @@ static void irq_msi_update_msg(struct irq_data *irqd,
struct irq_cfg *cfg)
return ret;
}
+struct irq_domain *arch_msi_root_irq_domain(void)
+{
+ return x86_vector_domain;
+}
+
/*
* IRQ Chip for MSI PCI/PCI-X/PCI-Express Devices,
* which implement the MSI or MSI-X Capability Structure.
--
1.8.3.1
- Re: [PATCH v2 4/5] virtio-mmio: add MSI interrupt feature support, (continued)
- [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Zha Bin, 2020/02/10
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Michael S. Tsirkin, 2020/02/11
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Michael S. Tsirkin, 2020/02/11
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Jason Wang, 2020/02/11
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Michael S. Tsirkin, 2020/02/12
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Jason Wang, 2020/02/12
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Jason Wang, 2020/02/12
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Michael S. Tsirkin, 2020/02/12
- Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue, Jason Wang, 2020/02/12
[PATCH v2 5/5] x86: virtio-mmio: support virtio-mmio with MSI for x86,
Zha Bin <=
[PATCH v2 3/5] virtio-mmio: create a generic MSI irq domain, Zha Bin, 2020/02/10