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bh=R9NPsslFaBP70t3qucG6hbsDRR184R0H4Zo7SVEUzRM=; b=IlhVs9FYV+gcnTXYM12nETFDxnZrxGyoKFtJ+AnPNFkYbeUffaz4bFf0tUXJp1TYmpAvvE 1HO4D9vez1hfnRa8a/c7WESdG7PikEScMG7C6Y3tcOWe8as2m7cros/i+mIB5UolddPTsU a6PNGbxdm3EZD0N+muyk+zXSkPHYzcs= X-MC-Unique: sNg-dZz1M6e8OQX1k6YVVg-1 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, alex.williamson@redhat.com Subject: [RFC v9 09/29] memory: Introduce IOMMU Memory Region inject_faults API Date: Sun, 11 Apr 2021 14:08:52 +0200 Message-Id: <20210411120912.15770-10-eric.auger@redhat.com> In-Reply-To: <20210411120912.15770-1-eric.auger@redhat.com> References: <20210411120912.15770-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" This new API allows to inject @count iommu_faults into the IOMMU memory region. Signed-off-by: Eric Auger --- include/exec/memory.h | 24 ++++++++++++++++++++++++ softmmu/memory.c | 10 ++++++++++ 2 files changed, 34 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index ac8521b29a..527f77c453 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -65,6 +65,8 @@ struct ReservedRegion { unsigned type; }; =20 +struct iommu_fault; + typedef struct IOMMUTLBEntry IOMMUTLBEntry; =20 /* See address_space_translate: bit 0 is read, bit 1 is write. */ @@ -475,6 +477,19 @@ struct IOMMUMemoryRegionClass { int (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu, uint64_t page_size_mask, Error **errp); + + /* + * Inject @count faults into the IOMMU memory region + * + * Optional method: if this method is not provided, then + * memory_region_injection_faults() will return -ENOENT + * + * @iommu: the IOMMU memory region to inject the faults in + * @count: number of faults to inject + * @buf: fault buffer + */ + int (*inject_faults)(IOMMUMemoryRegion *iommu, int count, + struct iommu_fault *buf); }; =20 typedef struct CoalescedMemoryRange CoalescedMemoryRange; @@ -1520,6 +1535,15 @@ int memory_region_iommu_num_indexes(IOMMUMemoryRegio= n *iommu_mr); int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr, uint64_t page_size_mask, Error **errp); +/** + * memory_region_inject_faults : inject @count faults stored in @buf + * + * @iommu_mr: the IOMMU memory region + * @count: number of faults to be injected + * @buf: buffer containing the faults + */ +int memory_region_inject_faults(IOMMUMemoryRegion *iommu_mr, int count, + struct iommu_fault *buf); =20 /** * memory_region_name: get a memory region's name diff --git a/softmmu/memory.c b/softmmu/memory.c index d4493ef9e4..1dd34356c0 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -2030,6 +2030,16 @@ int memory_region_iommu_num_indexes(IOMMUMemoryRegio= n *iommu_mr) return imrc->num_indexes(iommu_mr); } =20 +int memory_region_inject_faults(IOMMUMemoryRegion *iommu_mr, int count, + struct iommu_fault *buf) +{ + IOMMUMemoryRegionClass *imrc =3D IOMMU_MEMORY_REGION_GET_CLASS(iommu_m= r); + if (!imrc->inject_faults) { + return -ENOENT; + } + return imrc->inject_faults(iommu_mr, count, buf); +} + void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) { uint8_t mask =3D 1 << client; --=20 2.26.3