42c9d0a3d0
This new API allows to inject @count iommu_faults into the IOMMU memory region. Signed-off-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
90 lines
2.8 KiB
Diff
90 lines
2.8 KiB
Diff
From 497e055ed89e3cb5286dde2b05b7d7fd67e69331 Mon Sep 17 00:00:00 2001
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From: Eric Auger <eric.auger@redhat.com>
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Date: Thu, 13 Sep 2018 14:13:04 +0200
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Subject: [PATCH] memory: Introduce IOMMU Memory Region inject_faults API
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This new API allows to inject @count iommu_faults into
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the IOMMU memory region.
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
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---
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include/exec/memory.h | 25 +++++++++++++++++++++++++
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memory.c | 10 ++++++++++
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2 files changed, 35 insertions(+)
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diff --git a/include/exec/memory.h b/include/exec/memory.h
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index 716b07e115..ffd4282f14 100644
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--- a/include/exec/memory.h
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+++ b/include/exec/memory.h
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@@ -56,6 +56,8 @@ struct MemoryRegionMmio {
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CPUWriteMemoryFunc *write[3];
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};
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+struct iommu_fault;
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+
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typedef struct IOMMUTLBEntry IOMMUTLBEntry;
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/* See address_space_translate: bit 0 is read, bit 1 is write. */
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@@ -378,6 +380,19 @@ typedef struct IOMMUMemoryRegionClass {
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* @iommu: the IOMMUMemoryRegion
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*/
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int (*num_indexes)(IOMMUMemoryRegion *iommu);
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+
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+ /*
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+ * Inject @count faults into the IOMMU memory region
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+ *
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+ * Optional method: if this method is not provided, then
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+ * memory_region_injection_faults() will return -ENOENT
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+ *
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+ * @iommu: the IOMMU memory region to inject the faults in
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+ * @count: number of faults to inject
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+ * @buf: fault buffer
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+ */
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+ int (*inject_faults)(IOMMUMemoryRegion *iommu, int count,
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+ struct iommu_fault *buf);
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} IOMMUMemoryRegionClass;
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typedef struct CoalescedMemoryRange CoalescedMemoryRange;
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@@ -1182,6 +1197,16 @@ int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr,
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*/
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int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr);
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+/**
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+ * memory_region_inject_faults : inject @count faults stored in @buf
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+ *
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+ * @iommu_mr: the IOMMU memory region
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+ * @count: number of faults to be injected
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+ * @buf: buffer containing the faults
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+ */
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+int memory_region_inject_faults(IOMMUMemoryRegion *iommu_mr, int count,
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+ struct iommu_fault *buf);
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+
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/**
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* memory_region_name: get a memory region's name
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*
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diff --git a/memory.c b/memory.c
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index 708b3dff3d..623f89baa4 100644
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--- a/memory.c
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+++ b/memory.c
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@@ -2017,6 +2017,16 @@ int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr)
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return imrc->num_indexes(iommu_mr);
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}
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+int memory_region_inject_faults(IOMMUMemoryRegion *iommu_mr, int count,
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+ struct iommu_fault *buf)
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+{
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+ IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
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+ if (!imrc->inject_faults) {
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+ return -ENOENT;
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+ }
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+ return imrc->inject_faults(iommu_mr, count, buf);
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+}
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+
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void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
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{
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uint8_t mask = 1 << client;
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--
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2.27.0
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