From: Liu Yi L <yi.l.liu@intel.com>
To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com
Cc: eric.auger@redhat.com, pbonzini@redhat.com, mst@redhat.com,
david@gibson.dropbear.id.au, kevin.tian@intel.com,
yi.l.liu@intel.com, jun.j.tian@intel.com, yi.y.sun@intel.com,
kvm@vger.kernel.org, hao.wu@intel.com, jean-philippe@linaro.org,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Yi Sun <yi.y.sun@linux.intel.com>
Subject: [PATCH v1 18/22] vfio: add support for flush iommu stage-1 cache
Date: Sun, 22 Mar 2020 05:36:15 -0700 [thread overview]
Message-ID: <1584880579-12178-19-git-send-email-yi.l.liu@intel.com> (raw)
In-Reply-To: <1584880579-12178-1-git-send-email-yi.l.liu@intel.com>
This patch adds flush_stage1_cache() definition in HostIOMUContextClass.
And adds corresponding implementation in VFIO. This is to expose a way
for vIOMMU to flush stage-1 cache in host side since guest owns stage-1
translation structures in dual stage DMA translation configuration.
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Yi Sun <yi.y.sun@linux.intel.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
---
hw/iommu/host_iommu_context.c | 19 +++++++++++++++++++
hw/vfio/common.c | 24 ++++++++++++++++++++++++
include/hw/iommu/host_iommu_context.h | 14 ++++++++++++++
3 files changed, 57 insertions(+)
diff --git a/hw/iommu/host_iommu_context.c b/hw/iommu/host_iommu_context.c
index 8a53376..4bff1a1 100644
--- a/hw/iommu/host_iommu_context.c
+++ b/hw/iommu/host_iommu_context.c
@@ -113,6 +113,25 @@ int host_iommu_ctx_unbind_stage1_pgtbl(HostIOMMUContext *host_icx,
return hicxc->unbind_stage1_pgtbl(host_icx, data);
}
+int host_iommu_ctx_flush_stage1_cache(HostIOMMUContext *host_icx,
+ DualIOMMUStage1Cache *cache)
+{
+ HostIOMMUContextClass *hicxc;
+
+ hicxc = HOST_IOMMU_CONTEXT_GET_CLASS(host_icx);
+
+ if (!hicxc) {
+ return -EINVAL;
+ }
+
+ if (!(host_icx->flags & HOST_IOMMU_NESTING) ||
+ !hicxc->flush_stage1_cache) {
+ return -EINVAL;
+ }
+
+ return hicxc->flush_stage1_cache(host_icx, cache);
+}
+
void host_iommu_ctx_init(void *_host_icx, size_t instance_size,
const char *mrtypename,
uint64_t flags, uint32_t formats)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 770a785..e69fe94 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1269,6 +1269,29 @@ static int vfio_host_icx_unbind_stage1_pgtbl(HostIOMMUContext *host_icx,
return ret;
}
+static int vfio_host_icx_flush_stage1_cache(HostIOMMUContext *host_icx,
+ DualIOMMUStage1Cache *cache)
+{
+ VFIOContainer *container = container_of(host_icx, VFIOContainer, host_icx);
+ struct vfio_iommu_type1_cache_invalidate *cache_inv;
+ unsigned long argsz;
+ int ret = 0;
+
+ argsz = sizeof(*cache_inv) + sizeof(cache->cache_info);
+ cache_inv = g_malloc0(argsz);
+ cache_inv->argsz = argsz;
+ cache_inv->flags = 0;
+ memcpy(&cache_inv->cache_info, &cache->cache_info,
+ sizeof(cache->cache_info));
+
+ if (ioctl(container->fd, VFIO_IOMMU_CACHE_INVALIDATE, cache_inv)) {
+ error_report("%s: iommu cache flush failed: %d", __func__, -errno);
+ ret = -errno;
+ }
+ g_free(cache_inv);
+ return ret;
+}
+
/**
* Get iommu info from host. Caller of this funcion should free
* the memory pointed by the returned pointer stored in @info
@@ -1996,6 +2019,7 @@ static void vfio_host_iommu_context_class_init(ObjectClass *klass,
hicxc->pasid_free = vfio_host_icx_pasid_free;
hicxc->bind_stage1_pgtbl = vfio_host_icx_bind_stage1_pgtbl;
hicxc->unbind_stage1_pgtbl = vfio_host_icx_unbind_stage1_pgtbl;
+ hicxc->flush_stage1_cache = vfio_host_icx_flush_stage1_cache;
}
static const TypeInfo vfio_host_iommu_context_info = {
diff --git a/include/hw/iommu/host_iommu_context.h b/include/hw/iommu/host_iommu_context.h
index 97c9473..6230daa 100644
--- a/include/hw/iommu/host_iommu_context.h
+++ b/include/hw/iommu/host_iommu_context.h
@@ -42,6 +42,7 @@
typedef struct HostIOMMUContext HostIOMMUContext;
typedef struct DualIOMMUStage1BindData DualIOMMUStage1BindData;
+typedef struct DualIOMMUStage1Cache DualIOMMUStage1Cache;
typedef struct HostIOMMUContextClass {
/* private */
@@ -65,6 +66,12 @@ typedef struct HostIOMMUContextClass {
/* Undo a previous bind. @bind_data specifies the unbind info. */
int (*unbind_stage1_pgtbl)(HostIOMMUContext *dsi_obj,
DualIOMMUStage1BindData *bind_data);
+ /*
+ * Propagate stage-1 cache flush to host IOMMU, cache
+ * info specifid in @cache
+ */
+ int (*flush_stage1_cache)(HostIOMMUContext *host_icx,
+ DualIOMMUStage1Cache *cache);
} HostIOMMUContextClass;
/*
@@ -86,6 +93,11 @@ struct DualIOMMUStage1BindData {
} bind_data;
};
+struct DualIOMMUStage1Cache {
+ uint32_t pasid;
+ struct iommu_cache_invalidate_info cache_info;
+};
+
int host_iommu_ctx_pasid_alloc(HostIOMMUContext *host_icx, uint32_t min,
uint32_t max, uint32_t *pasid);
int host_iommu_ctx_pasid_free(HostIOMMUContext *host_icx, uint32_t pasid);
@@ -93,6 +105,8 @@ int host_iommu_ctx_bind_stage1_pgtbl(HostIOMMUContext *host_icx,
DualIOMMUStage1BindData *data);
int host_iommu_ctx_unbind_stage1_pgtbl(HostIOMMUContext *host_icx,
DualIOMMUStage1BindData *data);
+int host_iommu_ctx_flush_stage1_cache(HostIOMMUContext *host_icx,
+ DualIOMMUStage1Cache *cache);
void host_iommu_ctx_init(void *_host_icx, size_t instance_size,
const char *mrtypename,
--
2.7.4
next prev parent reply other threads:[~2020-03-22 12:30 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-22 12:35 [PATCH v1 00/22] intel_iommu: expose Shared Virtual Addressing to VMs Liu Yi L
2020-03-22 12:35 ` [PATCH v1 01/22] scripts/update-linux-headers: Import iommu.h Liu Yi L
2020-03-22 12:35 ` [PATCH v1 02/22] header file update VFIO/IOMMU vSVA APIs Liu Yi L
2020-03-29 16:32 ` Auger Eric
2020-03-30 7:06 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 03/22] vfio: check VFIO_TYPE1_NESTING_IOMMU support Liu Yi L
2020-03-22 12:36 ` [PATCH v1 04/22] hw/iommu: introduce HostIOMMUContext Liu Yi L
2020-03-23 20:58 ` Peter Xu
2020-03-24 10:00 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 05/22] hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps Liu Yi L
2020-03-22 12:36 ` [PATCH v1 06/22] hw/pci: introduce pci_device_set/unset_iommu_context() Liu Yi L
2020-03-23 21:15 ` Peter Xu
2020-03-24 10:02 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 07/22] intel_iommu: add set/unset_iommu_context callback Liu Yi L
2020-03-23 21:29 ` Peter Xu
2020-03-24 11:15 ` Liu, Yi L
2020-03-24 15:24 ` Peter Xu
2020-03-25 9:37 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 08/22] vfio: init HostIOMMUContext per-container Liu Yi L
[not found] ` <20200323213943.GR127076@xz-x1>
2020-03-24 13:03 ` Liu, Yi L
2020-03-24 14:45 ` Peter Xu
2020-03-25 9:30 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 09/22] vfio/common: check PASID alloc/free availability Liu Yi L
2020-03-23 22:06 ` Peter Xu
2020-03-24 11:18 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 10/22] intel_iommu: add virtual command capability support Liu Yi L
2020-03-22 12:36 ` [PATCH v1 11/22] intel_iommu: process PASID cache invalidation Liu Yi L
2020-03-22 12:36 ` [PATCH v1 12/22] intel_iommu: add PASID cache management infrastructure Liu Yi L
2020-03-24 17:32 ` Peter Xu
2020-03-25 12:20 ` Liu, Yi L
2020-03-25 14:52 ` Peter Xu
2020-03-26 6:15 ` Liu, Yi L
2020-03-26 13:57 ` Liu, Yi L
2020-03-26 15:53 ` Peter Xu
2020-03-27 1:33 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 13/22] vfio: add bind stage-1 page table support Liu Yi L
2020-03-24 17:41 ` Peter Xu
2020-03-25 9:49 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 14/22] intel_iommu: bind/unbind guest page table to host Liu Yi L
2020-03-24 17:46 ` Peter Xu
2020-03-25 12:42 ` Liu, Yi L
2020-03-25 14:56 ` Peter Xu
2020-03-26 3:04 ` Liu, Yi L
2020-03-25 12:47 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 15/22] intel_iommu: replay guest pasid bindings " Liu Yi L
2020-03-24 18:00 ` Peter Xu
2020-03-25 13:14 ` Liu, Yi L
2020-03-25 15:06 ` Peter Xu
2020-03-26 3:17 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 16/22] intel_iommu: replay pasid binds after context cache invalidation Liu Yi L
2020-03-24 18:07 ` Peter Xu
2020-03-25 13:18 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 17/22] intel_iommu: do not pass down pasid bind for PASID #0 Liu Yi L
2020-03-24 18:13 ` Peter Xu
2020-03-25 10:42 ` Liu, Yi L
2020-03-25 15:12 ` Peter Xu
2020-03-26 2:42 ` Liu, Yi L
2020-03-22 12:36 ` Liu Yi L [this message]
2020-03-24 18:19 ` [PATCH v1 18/22] vfio: add support for flush iommu stage-1 cache Peter Xu
2020-03-25 10:40 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 19/22] intel_iommu: process PASID-based iotlb invalidation Liu Yi L
2020-03-24 18:26 ` Peter Xu
2020-03-25 13:36 ` Liu, Yi L
2020-03-25 15:15 ` Peter Xu
2020-03-29 11:17 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 20/22] intel_iommu: propagate PASID-based iotlb invalidation to host Liu Yi L
2020-03-24 18:34 ` Peter Xu
2020-03-25 13:21 ` Liu, Yi L
2020-03-26 5:41 ` Liu, Yi L
2020-03-26 13:02 ` Peter Xu
2020-03-26 13:22 ` Peter Xu
2020-03-26 13:33 ` Liu, Yi L
2020-03-26 13:23 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 21/22] intel_iommu: process PASID-based Device-TLB invalidation Liu Yi L
2020-03-24 18:36 ` Peter Xu
2020-03-25 9:19 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 22/22] intel_iommu: modify x-scalable-mode to be string option Liu Yi L
2020-03-24 18:39 ` Peter Xu
2020-03-25 13:22 ` Liu, Yi L
2020-03-22 13:25 ` [PATCH v1 00/22] intel_iommu: expose Shared Virtual Addressing to VMs no-reply
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