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[Qemu-devel] [PATCH v5 16/18] ioapic: register VT-d IEC invalidate notif
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v5 16/18] ioapic: register VT-d IEC invalidate notifier |
Date: |
Thu, 28 Apr 2016 15:05:42 +0800 |
Let IOAPIC the first consumer of VT-d IEC invalidation notifiers. This
is only used for split irqchip case, when VT-d 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 d6e88d5..b41ab89 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -30,6 +30,7 @@
#include "sysemu/kvm.h"
#include "target-i386/cpu.h"
#include "hw/i386/apic-msidef.h"
+#include "hw/i386/intel_iommu.h"
//#define DEBUG_IOAPIC
@@ -197,6 +198,14 @@ 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;
@@ -330,6 +339,18 @@ 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()) {
+ IntelIOMMUState *iommu = vtd_iommu_get();
+ 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. */
+ vtd_iec_register_notifier(iommu, ioapic_iec_notifier, s);
+ }
+ }
+#endif
}
static void ioapic_class_init(ObjectClass *klass, void *data)
--
2.4.3
- [Qemu-devel] [PATCH v5 13/18] intel_iommu: add support for split irqchip, (continued)
- [Qemu-devel] [PATCH v5 13/18] intel_iommu: add support for split irqchip, Peter Xu, 2016/04/28
- [Qemu-devel] [PATCH v5 12/18] ioapic: introduce ioapic_entry_parse() helper, Peter Xu, 2016/04/28
- [Qemu-devel] [PATCH v5 14/18] q35: add "intremap" parameter to enable IR, Peter Xu, 2016/04/28
- [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, Peter Xu, 2016/04/28
- Re: [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, Jan Kiszka, 2016/04/28
- Re: [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, Peter Xu, 2016/04/28
- Re: [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, Jan Kiszka, 2016/04/28
- Re: [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, Peter Xu, 2016/04/28
- Re: [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, David Kiarie, 2016/04/28
- Re: [Qemu-devel] [PATCH v5 15/18] intel_iommu: introduce IEC notifiers, Peter Xu, 2016/04/28
[Qemu-devel] [PATCH v5 16/18] ioapic: register VT-d IEC invalidate notifier,
Peter Xu <=
[Qemu-devel] [PATCH v5 17/18] ioapic: keep RO bits for IOAPIC entry, Peter Xu, 2016/04/28
[Qemu-devel] [PATCH v5 18/18] ioapic: clear remote irr bit for edge-triggered interrupts, Peter Xu, 2016/04/28
Re: [Qemu-devel] [PATCH v5 00/18] IOMMU: Enable interrupt remapping for Intel IOMMU, Peter Xu, 2016/04/28
Re: [Qemu-devel] [PATCH v5 00/18] IOMMU: Enable interrupt remapping for Intel IOMMU, Jan Kiszka, 2016/04/28
[Qemu-devel] [PATCH 19/18] intel_iommu: Add support for Extended Interrupt Mode, Jan Kiszka, 2016/04/28