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[Qemu-devel] [PATCH v4 16/16] ioapic: register VT-d IEC invalidate notif
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v4 16/16] ioapic: register VT-d IEC invalidate notifier |
Date: |
Tue, 19 Apr 2016 16:38:42 +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 v4 05/16] intel_iommu: define interrupt remap table addr register, (continued)
- [Qemu-devel] [PATCH v4 05/16] intel_iommu: define interrupt remap table addr register, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 06/16] intel_iommu: handle interrupt remap enable, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 08/16] intel_iommu: provide helper function vtd_get_iommu, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 07/16] intel_iommu: define several structs for IOMMU IR, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 09/16] intel_iommu: add IR translation faults defines, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 10/16] intel_iommu: Add support for PCI MSI remap, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 12/16] ioapic: introduce ioapic_entry_parse() helper, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 11/16] q35: ioapic: add support for emulated IOAPIC IR, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 13/16] intel_iommu: add support for split irqchip, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 14/16] q35: add "int-remap" flag to enable intr, Peter Xu, 2016/04/19
- [Qemu-devel] [PATCH v4 16/16] ioapic: register VT-d IEC invalidate notifier,
Peter Xu <=
- [Qemu-devel] [PATCH v4 15/16] intel_iommu: introduce IEC notifiers, Peter Xu, 2016/04/19
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Jan Kiszka, 2016/04/25
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Peter Xu, 2016/04/25
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Jan Kiszka, 2016/04/25
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Radim Krčmář, 2016/04/25
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Peter Xu, 2016/04/26
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Jan Kiszka, 2016/04/26
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Jan Kiszka, 2016/04/26
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Peter Xu, 2016/04/26
- Re: [Qemu-devel] [PATCH v4 00/16] IOMMU: Enable interrupt remapping for Intel IOMMU, Jan Kiszka, 2016/04/26