From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, david.marchand@redhat.com,
mkp@redhat.com, fbl@redhat.com, jasowang@redhat.com,
cunming.liang@intel.com, xieyongji@bytedance.com,
echaudro@redhat.com, eperezma@redhat.com, amorenoz@redhat.com,
lulu@redhat.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [PATCH v4 10/26] vhost: add IOTLB cache entry removal callback
Date: Thu, 1 Jun 2023 22:07:56 +0200 [thread overview]
Message-ID: <20230601200812.672233-11-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20230601200812.672233-1-maxime.coquelin@redhat.com>
VDUSE will need to munmap() the IOTLB entry on removal
from the cache, as it performs mmap() before insertion.
This patch introduces a callback that VDUSE layer will
implement to achieve this.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
lib/vhost/iotlb.c | 12 ++++++++++++
lib/vhost/vhost.h | 3 +++
2 files changed, 15 insertions(+)
diff --git a/lib/vhost/iotlb.c b/lib/vhost/iotlb.c
index 87986f2489..424121cc00 100644
--- a/lib/vhost/iotlb.c
+++ b/lib/vhost/iotlb.c
@@ -25,6 +25,15 @@ struct vhost_iotlb_entry {
#define IOTLB_CACHE_SIZE 2048
+static void
+vhost_user_iotlb_remove_notify(struct virtio_net *dev, struct vhost_iotlb_entry *entry)
+{
+ if (dev->backend_ops->iotlb_remove_notify == NULL)
+ return;
+
+ dev->backend_ops->iotlb_remove_notify(entry->uaddr, entry->uoffset, entry->size);
+}
+
static bool
vhost_user_iotlb_share_page(struct vhost_iotlb_entry *a, struct vhost_iotlb_entry *b)
{
@@ -198,6 +207,7 @@ vhost_user_iotlb_cache_remove_all(struct virtio_net *dev)
vhost_user_iotlb_clear_dump(node, NULL, NULL);
TAILQ_REMOVE(&dev->iotlb_list, node, next);
+ vhost_user_iotlb_remove_notify(dev, node);
vhost_user_iotlb_pool_put(dev, node);
}
@@ -223,6 +233,7 @@ vhost_user_iotlb_cache_random_evict(struct virtio_net *dev)
vhost_user_iotlb_clear_dump(node, prev_node, next_node);
TAILQ_REMOVE(&dev->iotlb_list, node, next);
+ vhost_user_iotlb_remove_notify(dev, node);
vhost_user_iotlb_pool_put(dev, node);
dev->iotlb_cache_nr--;
break;
@@ -314,6 +325,7 @@ vhost_user_iotlb_cache_remove(struct virtio_net *dev, uint64_t iova, uint64_t si
vhost_user_iotlb_clear_dump(node, prev_node, next_node);
TAILQ_REMOVE(&dev->iotlb_list, node, next);
+ vhost_user_iotlb_remove_notify(dev, node);
vhost_user_iotlb_pool_put(dev, node);
dev->iotlb_cache_nr--;
} else {
diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
index 966b6dd67a..69df8b14c0 100644
--- a/lib/vhost/vhost.h
+++ b/lib/vhost/vhost.h
@@ -89,10 +89,13 @@
for (iter = val; iter < num; iter++)
#endif
+typedef void (*vhost_iotlb_remove_notify)(uint64_t addr, uint64_t off, uint64_t size);
+
/**
* Structure that contains backend-specific ops.
*/
struct vhost_backend_ops {
+ vhost_iotlb_remove_notify iotlb_remove_notify;
};
/**
--
2.40.1
next prev parent reply other threads:[~2023-06-01 20:09 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-01 20:07 [PATCH v4 00/26] Add VDUSE support to Vhost library Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 01/26] vhost: fix IOTLB entries overlap check with previous entry Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 02/26] vhost: add helper of IOTLB entries coredump Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 03/26] vhost: add helper for IOTLB entries shared page check Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 04/26] vhost: don't dump unneeded pages with IOTLB Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 05/26] vhost: change to single IOTLB cache per device Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 06/26] vhost: add offset field to IOTLB entries Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 07/26] vhost: add page size info to IOTLB entry Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 08/26] vhost: retry translating IOVA after IOTLB miss Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 09/26] vhost: introduce backend ops Maxime Coquelin
2023-06-01 20:07 ` Maxime Coquelin [this message]
2023-06-01 20:07 ` [PATCH v4 11/26] vhost: add helper for IOTLB misses Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 12/26] vhost: add helper for interrupt injection Maxime Coquelin
2023-06-01 20:07 ` [PATCH v4 13/26] vhost: add API to set max queue pairs Maxime Coquelin
2023-06-05 7:56 ` Xia, Chenbo
2023-06-01 20:08 ` [PATCH v4 14/26] net/vhost: use " Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 15/26] vhost: add control virtqueue support Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 16/26] vhost: add VDUSE device creation and destruction Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 17/26] vhost: add VDUSE callback for IOTLB miss Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 18/26] vhost: add VDUSE callback for IOTLB entry removal Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 19/26] vhost: add VDUSE callback for IRQ injection Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 20/26] vhost: add VDUSE events handler Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 21/26] vhost: add support for virtqueue state get event Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 22/26] vhost: add support for VDUSE status set event Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 23/26] vhost: add support for VDUSE IOTLB update event Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 24/26] vhost: add VDUSE device startup Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 25/26] vhost: add multiqueue support to VDUSE Maxime Coquelin
2023-06-01 20:08 ` [PATCH v4 26/26] vhost: add VDUSE device stop Maxime Coquelin
2023-06-05 7:56 ` Xia, Chenbo
2023-06-06 8:14 ` Maxime Coquelin
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