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[Qemu-devel] [PATCH v8 18/25] ioapic: register IOMMU IEC notifier for io
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v8 18/25] ioapic: register IOMMU IEC notifier for ioapic |
Date: |
Mon, 30 May 2016 18:31:31 +0800 |
Let IOAPIC the first consumer of x86 IOMMU IEC invalidation
notifiers. This is only used for split irqchip case, when vIOMMU
receives IR invalidation requests, IOAPIC will be notified to update
kernel irq routes. For simplicity, we just update all IOAPIC routes,
even if the invalidated entries are not IOAPIC ones.
Signed-off-by: Peter Xu <address@hidden>
---
hw/intc/ioapic.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c
index c4469e4..4823211 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -31,6 +31,7 @@
#include "sysemu/kvm.h"
#include "target-i386/cpu.h"
#include "hw/i386/apic-msidef.h"
+#include "hw/i386/x86-iommu.h"
//#define DEBUG_IOAPIC
@@ -198,6 +199,14 @@ static void ioapic_update_kvm_routes(IOAPICCommonState *s)
#endif
}
+static void ioapic_iec_notifier(void *private, bool global,
+ uint32_t index, uint32_t mask)
+{
+ IOAPICCommonState *s = (IOAPICCommonState *)private;
+ /* For simplicity, we just update all the routes */
+ ioapic_update_kvm_routes(s);
+}
+
void ioapic_eoi_broadcast(int vector)
{
IOAPICCommonState *s;
@@ -364,6 +373,18 @@ static void ioapic_realize(DeviceState *dev, Error **errp)
qdev_init_gpio_in(dev, ioapic_set_irq, IOAPIC_NUM_PINS);
ioapics[ioapic_no] = s;
+
+#ifdef CONFIG_KVM
+ if (kvm_irqchip_is_split()) {
+ X86IOMMUState *iommu = x86_iommu_get_default();
+ if (iommu) {
+ /* Register this IOAPIC with IOMMU IEC notifier, so that
+ * when there are IR invalidates, we can be notified to
+ * update kernel IR cache. */
+ x86_iommu_iec_register_notifier(iommu, ioapic_iec_notifier, s);
+ }
+ }
+#endif
}
static void ioapic_class_init(ObjectClass *klass, void *data)
--
2.4.11
- [Qemu-devel] [PATCH v8 10/25] x86-iommu: q35: generalize find_add_as(), (continued)
- [Qemu-devel] [PATCH v8 10/25] x86-iommu: q35: generalize find_add_as(), Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 11/25] intel_iommu: add IR translation faults defines, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 12/25] intel_iommu: Add support for PCI MSI remap, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 13/25] q35: ioapic: add support for emulated IOAPIC IR, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 14/25] ioapic: introduce ioapic_entry_parse() helper, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 15/25] intel_iommu: add support for split irqchip, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 17/25] x86-iommu: introduce IEC notifiers, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 16/25] q35: add "intremap" parameter to enable IR, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 18/25] ioapic: register IOMMU IEC notifier for ioapic,
Peter Xu <=
- [Qemu-devel] [PATCH v8 19/25] intel_iommu: Add support for Extended Interrupt Mode, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 20/25] intel_iommu: add SID validation for IR, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 21/25] kvm-irqchip: simplify kvm_irqchip_add_msi_route, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 23/25] kvm-irqchip: x86: add msi route notify fn, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 22/25] kvm-irqchip: i386: add hook for add/remove virq, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 25/25] intel_iommu: support all masks in interrupt entry cache invalidation, Peter Xu, 2016/05/30
- [Qemu-devel] [PATCH v8 24/25] kvm-irqchip: do explicit commit when update irq, Peter Xu, 2016/05/30
- Re: [Qemu-devel] [PATCH v8 00/25] IOMMU: Enable interrupt remapping for Intel IOMMU, Peter Xu, 2016/05/30