On 5/9/23 07:32, Xia, Chenbo wrote:
Hi Maxime,
-----Original Message-----
From: Maxime Coquelin <[email protected]>
Sent: Friday, March 31, 2023 11:43 PM
To: [email protected]; [email protected]; Xia, Chenbo
<[email protected]>; [email protected]; [email protected];
[email protected]; Liang, Cunming <[email protected]>; Xie, Yongji
<[email protected]>; [email protected]; [email protected];
[email protected]
Cc: Maxime Coquelin <[email protected]>
Subject: [RFC 20/27] vhost: add VDUSE callback for IOTLB entry removal
This patch implements the VDUSE callback for IOTLB misses,
for IOTLB entry removal? This commit messages seems the same as patch 19.
You may want to change it :)
I indeed need to rework both patches 19 & 20 commit messages.
Thanks for the review,
Maxime
Thanks,
Chenbo
where it unmaps the pages from the invalidated IOTLB entry
Signed-off-by: Maxime Coquelin <[email protected]>
---
lib/vhost/vduse.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/lib/vhost/vduse.c b/lib/vhost/vduse.c
index f46823f589..ff4c9e72f1 100644
--- a/lib/vhost/vduse.c
+++ b/lib/vhost/vduse.c
@@ -32,6 +32,12 @@
(1ULL << VIRTIO_F_IN_ORDER) | \
(1ULL << VIRTIO_F_IOMMU_PLATFORM))
+static void
+vduse_iotlb_remove_notify(uint64_t addr, uint64_t offset, uint64_t size)
+{
+ munmap((void *)(uintptr_t)addr, offset + size);
+}
+
static int
vduse_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm
__rte_unused)
{
@@ -89,6 +95,7 @@ vduse_iotlb_miss(struct virtio_net *dev, uint64_t iova,
uint8_t perm __rte_unuse
static struct vhost_backend_ops vduse_backend_ops = {
.iotlb_miss = vduse_iotlb_miss,
+ .iotlb_remove_notify = vduse_iotlb_remove_notify,
};
int
--
2.39.2
