[v3,2/3] vhost: convert buffer addresses to GPA for logging
diff mbox series

Message ID 20190927183759.18816-3-amorenoz@redhat.com
State Superseded, archived
Delegated to: Maxime Coquelin
Headers show
Series
  • vhost: add support for IOVA_VA mode
Related show

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail Compilation issues

Commit Message

Adrian Moreno Sept. 27, 2019, 6:37 p.m. UTC
Note that the API facing rte_vhost_log_write is not modified.
So, make explicit that it expects the address in GPA space.

Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
Cc: maxime.coquelin@redhat.com
Cc: stable@dpdk.org

Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
---
 lib/librte_vhost/rte_vhost.h  |  2 +-
 lib/librte_vhost/vdpa.c       |  4 +++-
 lib/librte_vhost/vhost.c      | 21 +++++++++++++++++++++
 lib/librte_vhost/vhost.h      | 16 ++++++++++++++++
 lib/librte_vhost/virtio_net.c | 12 +++++++-----
 5 files changed, 48 insertions(+), 7 deletions(-)

Comments

Tiwei Bie Oct. 8, 2019, 6:30 a.m. UTC | #1
On Fri, Sep 27, 2019 at 08:37:58PM +0200, Adrian Moreno wrote:
> Note that the API facing rte_vhost_log_write is not modified.
> So, make explicit that it expects the address in GPA space.
> 
> Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
> Cc: maxime.coquelin@redhat.com
> Cc: stable@dpdk.org
> 
> Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
> ---
>  lib/librte_vhost/rte_vhost.h  |  2 +-
>  lib/librte_vhost/vdpa.c       |  4 +++-
>  lib/librte_vhost/vhost.c      | 21 +++++++++++++++++++++
>  lib/librte_vhost/vhost.h      | 16 ++++++++++++++++
>  lib/librte_vhost/virtio_net.c | 12 +++++++-----
>  5 files changed, 48 insertions(+), 7 deletions(-)
> 
> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
> index 7fb172912..16c7e4243 100644
> --- a/lib/librte_vhost/rte_vhost.h
> +++ b/lib/librte_vhost/rte_vhost.h
> @@ -265,7 +265,7 @@ rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
>   * @param vid
>   *  vhost device ID
>   * @param addr
> - *  the starting address for write
> + *  the starting address for write (in guest physical address space)
>   * @param len
>   *  the length to write
>   */
> diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
> index 8e45ce9f8..11fd5aede 100644
> --- a/lib/librte_vhost/vdpa.c
> +++ b/lib/librte_vhost/vdpa.c
> @@ -201,7 +201,9 @@ rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
>  				goto fail;
>  			desc = desc_ring[desc_id];
>  			if (desc.flags & VRING_DESC_F_WRITE)
> -				vhost_log_write(dev, desc.addr, desc.len);
> +				vhost_log_cache_write_iova(dev, vq,
> +							   desc.addr,
> +							   desc.len);

This will only log the dirty pages in cache.


>  			desc_id = desc.next;
>  		} while (desc.flags & VRING_DESC_F_NEXT);
>  
> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
> index e57dda22f..78457a77c 100644
> --- a/lib/librte_vhost/vhost.c
> +++ b/lib/librte_vhost/vhost.c
> @@ -200,6 +200,27 @@ __vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
>  	}
>  }
>  
> +void
> +__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
> +			     uint64_t iova, uint64_t len)
> +{
> +	uint64_t hva, gpa, map_len;
> +	map_len = len;
> +
> +	hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
> +	if (map_len != len) {
> +		RTE_LOG(ERR, VHOST_CONFIG,
> +			"Failed to write log for IOVA 0x%0lx."

PRIx64 should be used here, otherwise the build will be
broken on i686.

It's better to add a space after '.'


> +			"No IOTLB entry found\n",
> +			iova);
> +		return;
> +	}
> +
> +	gpa = hva_to_gpa(dev, hva, len);
> +	if (gpa)
> +		__vhost_log_cache_write(dev, vq, gpa, len);
> +}
> +
Adrian Moreno Oct. 8, 2019, 7:38 a.m. UTC | #2
On 10/8/19 8:30 AM, Tiwei Bie wrote:
> On Fri, Sep 27, 2019 at 08:37:58PM +0200, Adrian Moreno wrote:
>> Note that the API facing rte_vhost_log_write is not modified.
>> So, make explicit that it expects the address in GPA space.
>>
>> Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
>> Cc: maxime.coquelin@redhat.com
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
>> ---
>>  lib/librte_vhost/rte_vhost.h  |  2 +-
>>  lib/librte_vhost/vdpa.c       |  4 +++-
>>  lib/librte_vhost/vhost.c      | 21 +++++++++++++++++++++
>>  lib/librte_vhost/vhost.h      | 16 ++++++++++++++++
>>  lib/librte_vhost/virtio_net.c | 12 +++++++-----
>>  5 files changed, 48 insertions(+), 7 deletions(-)
>>
>> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
>> index 7fb172912..16c7e4243 100644
>> --- a/lib/librte_vhost/rte_vhost.h
>> +++ b/lib/librte_vhost/rte_vhost.h
>> @@ -265,7 +265,7 @@ rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
>>   * @param vid
>>   *  vhost device ID
>>   * @param addr
>> - *  the starting address for write
>> + *  the starting address for write (in guest physical address space)
>>   * @param len
>>   *  the length to write
>>   */
>> diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
>> index 8e45ce9f8..11fd5aede 100644
>> --- a/lib/librte_vhost/vdpa.c
>> +++ b/lib/librte_vhost/vdpa.c
>> @@ -201,7 +201,9 @@ rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
>>  				goto fail;
>>  			desc = desc_ring[desc_id];
>>  			if (desc.flags & VRING_DESC_F_WRITE)
>> -				vhost_log_write(dev, desc.addr, desc.len);
>> +				vhost_log_cache_write_iova(dev, vq,
>> +							   desc.addr,
>> +							   desc.len);
> 
> This will only log the dirty pages in cache.
You're right. Thanks for spotting it. I will change it in the next version.
> 
> 
>>  			desc_id = desc.next;
>>  		} while (desc.flags & VRING_DESC_F_NEXT);
>>  
>> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
>> index e57dda22f..78457a77c 100644
>> --- a/lib/librte_vhost/vhost.c
>> +++ b/lib/librte_vhost/vhost.c
>> @@ -200,6 +200,27 @@ __vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
>>  	}
>>  }
>>  
>> +void
>> +__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
>> +			     uint64_t iova, uint64_t len)
>> +{
>> +	uint64_t hva, gpa, map_len;
>> +	map_len = len;
>> +
>> +	hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
>> +	if (map_len != len) {
>> +		RTE_LOG(ERR, VHOST_CONFIG,
>> +			"Failed to write log for IOVA 0x%0lx."
> 
> PRIx64 should be used here, otherwise the build will be
> broken on i686.
> 
> It's better to add a space after '.'
Thank you. Will do.
> 
> 
>> +			"No IOTLB entry found\n",
>> +			iova);
>> +		return;
>> +	}
>> +
>> +	gpa = hva_to_gpa(dev, hva, len);
>> +	if (gpa)
>> +		__vhost_log_cache_write(dev, vq, gpa, len);
>> +}
>> +
Maxime Coquelin Oct. 8, 2019, 7:43 a.m. UTC | #3
On 10/8/19 9:38 AM, Adrian Moreno wrote:
> On 10/8/19 8:30 AM, Tiwei Bie wrote:
>> On Fri, Sep 27, 2019 at 08:37:58PM +0200, Adrian Moreno wrote:
>>> Note that the API facing rte_vhost_log_write is not modified.
>>> So, make explicit that it expects the address in GPA space.
>>>
>>> Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
>>> Cc: maxime.coquelin@redhat.com
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
>>> ---
>>>  lib/librte_vhost/rte_vhost.h  |  2 +-
>>>  lib/librte_vhost/vdpa.c       |  4 +++-
>>>  lib/librte_vhost/vhost.c      | 21 +++++++++++++++++++++
>>>  lib/librte_vhost/vhost.h      | 16 ++++++++++++++++
>>>  lib/librte_vhost/virtio_net.c | 12 +++++++-----
>>>  5 files changed, 48 insertions(+), 7 deletions(-)
>>>
>>> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
>>> index 7fb172912..16c7e4243 100644
>>> --- a/lib/librte_vhost/rte_vhost.h
>>> +++ b/lib/librte_vhost/rte_vhost.h
>>> @@ -265,7 +265,7 @@ rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
>>>   * @param vid
>>>   *  vhost device ID
>>>   * @param addr
>>> - *  the starting address for write
>>> + *  the starting address for write (in guest physical address space)
>>>   * @param len
>>>   *  the length to write
>>>   */
>>> diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
>>> index 8e45ce9f8..11fd5aede 100644
>>> --- a/lib/librte_vhost/vdpa.c
>>> +++ b/lib/librte_vhost/vdpa.c
>>> @@ -201,7 +201,9 @@ rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
>>>  				goto fail;
>>>  			desc = desc_ring[desc_id];
>>>  			if (desc.flags & VRING_DESC_F_WRITE)
>>> -				vhost_log_write(dev, desc.addr, desc.len);
>>> +				vhost_log_cache_write_iova(dev, vq,
>>> +							   desc.addr,
>>> +							   desc.len);
>>
>> This will only log the dirty pages in cache.
> You're right. Thanks for spotting it. I will change it in the next version.
>>
>>
>>>  			desc_id = desc.next;
>>>  		} while (desc.flags & VRING_DESC_F_NEXT);
>>>  
>>> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
>>> index e57dda22f..78457a77c 100644
>>> --- a/lib/librte_vhost/vhost.c
>>> +++ b/lib/librte_vhost/vhost.c
>>> @@ -200,6 +200,27 @@ __vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
>>>  	}
>>>  }
>>>  
>>> +void
>>> +__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
>>> +			     uint64_t iova, uint64_t len)
>>> +{
>>> +	uint64_t hva, gpa, map_len;
>>> +	map_len = len;
>>> +
>>> +	hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
>>> +	if (map_len != len) {
>>> +		RTE_LOG(ERR, VHOST_CONFIG,
>>> +			"Failed to write log for IOVA 0x%0lx."
>>
>> PRIx64 should be used here, otherwise the build will be
>> broken on i686.
>>
>> It's better to add a space after '.'
> Thank you. Will do.
>>
>>
>>> +			"No IOTLB entry found\n",

I personally prefer not to split error messages even it is is slightly
above 80 chars. It makes grepping for error messages easier.

>>> +			iova);
>>> +		return;
>>> +	}
>>> +
>>> +	gpa = hva_to_gpa(dev, hva, len);
>>> +	if (gpa)
>>> +		__vhost_log_cache_write(dev, vq, gpa, len);
>>> +}
>>> +
>
Tiwei Bie Oct. 8, 2019, 8:01 a.m. UTC | #4
On Tue, Oct 08, 2019 at 09:43:48AM +0200, Maxime Coquelin wrote:
> On 10/8/19 9:38 AM, Adrian Moreno wrote:
> > On 10/8/19 8:30 AM, Tiwei Bie wrote:
> >> On Fri, Sep 27, 2019 at 08:37:58PM +0200, Adrian Moreno wrote:
> >>> Note that the API facing rte_vhost_log_write is not modified.
> >>> So, make explicit that it expects the address in GPA space.
> >>>
> >>> Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
> >>> Cc: maxime.coquelin@redhat.com
> >>> Cc: stable@dpdk.org
> >>>
> >>> Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
> >>> ---
> >>>  lib/librte_vhost/rte_vhost.h  |  2 +-
> >>>  lib/librte_vhost/vdpa.c       |  4 +++-
> >>>  lib/librte_vhost/vhost.c      | 21 +++++++++++++++++++++
> >>>  lib/librte_vhost/vhost.h      | 16 ++++++++++++++++
> >>>  lib/librte_vhost/virtio_net.c | 12 +++++++-----
> >>>  5 files changed, 48 insertions(+), 7 deletions(-)
> >>>
> >>> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
> >>> index 7fb172912..16c7e4243 100644
> >>> --- a/lib/librte_vhost/rte_vhost.h
> >>> +++ b/lib/librte_vhost/rte_vhost.h
> >>> @@ -265,7 +265,7 @@ rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
> >>>   * @param vid
> >>>   *  vhost device ID
> >>>   * @param addr
> >>> - *  the starting address for write
> >>> + *  the starting address for write (in guest physical address space)
> >>>   * @param len
> >>>   *  the length to write
> >>>   */
> >>> diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
> >>> index 8e45ce9f8..11fd5aede 100644
> >>> --- a/lib/librte_vhost/vdpa.c
> >>> +++ b/lib/librte_vhost/vdpa.c
> >>> @@ -201,7 +201,9 @@ rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
> >>>  				goto fail;
> >>>  			desc = desc_ring[desc_id];
> >>>  			if (desc.flags & VRING_DESC_F_WRITE)
> >>> -				vhost_log_write(dev, desc.addr, desc.len);
> >>> +				vhost_log_cache_write_iova(dev, vq,
> >>> +							   desc.addr,
> >>> +							   desc.len);
> >>
> >> This will only log the dirty pages in cache.
> > You're right. Thanks for spotting it. I will change it in the next version.
> >>
> >>
> >>>  			desc_id = desc.next;
> >>>  		} while (desc.flags & VRING_DESC_F_NEXT);
> >>>  
> >>> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
> >>> index e57dda22f..78457a77c 100644
> >>> --- a/lib/librte_vhost/vhost.c
> >>> +++ b/lib/librte_vhost/vhost.c
> >>> @@ -200,6 +200,27 @@ __vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
> >>>  	}
> >>>  }
> >>>  
> >>> +void
> >>> +__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
> >>> +			     uint64_t iova, uint64_t len)
> >>> +{
> >>> +	uint64_t hva, gpa, map_len;
> >>> +	map_len = len;
> >>> +
> >>> +	hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
> >>> +	if (map_len != len) {
> >>> +		RTE_LOG(ERR, VHOST_CONFIG,
> >>> +			"Failed to write log for IOVA 0x%0lx."
> >>
> >> PRIx64 should be used here, otherwise the build will be
> >> broken on i686.
> >>
> >> It's better to add a space after '.'
> > Thank you. Will do.
> >>
> >>
> >>> +			"No IOTLB entry found\n",
> 
> I personally prefer not to split error messages even it is is slightly
> above 80 chars. It makes grepping for error messages easier.

+1


> 
> >>> +			iova);
> >>> +		return;
> >>> +	}
> >>> +
> >>> +	gpa = hva_to_gpa(dev, hva, len);
> >>> +	if (gpa)
> >>> +		__vhost_log_cache_write(dev, vq, gpa, len);
> >>> +}
> >>> +
> >
Adrian Moreno Oct. 8, 2019, 8:25 a.m. UTC | #5
On 10/8/19 10:01 AM, Tiwei Bie wrote:
> On Tue, Oct 08, 2019 at 09:43:48AM +0200, Maxime Coquelin wrote:
>> On 10/8/19 9:38 AM, Adrian Moreno wrote:
>>> On 10/8/19 8:30 AM, Tiwei Bie wrote:
>>>> On Fri, Sep 27, 2019 at 08:37:58PM +0200, Adrian Moreno wrote:
>>>>> Note that the API facing rte_vhost_log_write is not modified.
>>>>> So, make explicit that it expects the address in GPA space.
>>>>>
>>>>> Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
>>>>> Cc: maxime.coquelin@redhat.com
>>>>> Cc: stable@dpdk.org
>>>>>
>>>>> Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
>>>>> ---
>>>>>  lib/librte_vhost/rte_vhost.h  |  2 +-
>>>>>  lib/librte_vhost/vdpa.c       |  4 +++-
>>>>>  lib/librte_vhost/vhost.c      | 21 +++++++++++++++++++++
>>>>>  lib/librte_vhost/vhost.h      | 16 ++++++++++++++++
>>>>>  lib/librte_vhost/virtio_net.c | 12 +++++++-----
>>>>>  5 files changed, 48 insertions(+), 7 deletions(-)
>>>>>
>>>>> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
>>>>> index 7fb172912..16c7e4243 100644
>>>>> --- a/lib/librte_vhost/rte_vhost.h
>>>>> +++ b/lib/librte_vhost/rte_vhost.h
>>>>> @@ -265,7 +265,7 @@ rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
>>>>>   * @param vid
>>>>>   *  vhost device ID
>>>>>   * @param addr
>>>>> - *  the starting address for write
>>>>> + *  the starting address for write (in guest physical address space)
>>>>>   * @param len
>>>>>   *  the length to write
>>>>>   */
>>>>> diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
>>>>> index 8e45ce9f8..11fd5aede 100644
>>>>> --- a/lib/librte_vhost/vdpa.c
>>>>> +++ b/lib/librte_vhost/vdpa.c
>>>>> @@ -201,7 +201,9 @@ rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
>>>>>  				goto fail;
>>>>>  			desc = desc_ring[desc_id];
>>>>>  			if (desc.flags & VRING_DESC_F_WRITE)
>>>>> -				vhost_log_write(dev, desc.addr, desc.len);
>>>>> +				vhost_log_cache_write_iova(dev, vq,
>>>>> +							   desc.addr,
>>>>> +							   desc.len);
>>>>
>>>> This will only log the dirty pages in cache.
>>> You're right. Thanks for spotting it. I will change it in the next version.
>>>>
>>>>
>>>>>  			desc_id = desc.next;
>>>>>  		} while (desc.flags & VRING_DESC_F_NEXT);
>>>>>  
>>>>> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
>>>>> index e57dda22f..78457a77c 100644
>>>>> --- a/lib/librte_vhost/vhost.c
>>>>> +++ b/lib/librte_vhost/vhost.c
>>>>> @@ -200,6 +200,27 @@ __vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
>>>>>  	}
>>>>>  }
>>>>>  
>>>>> +void
>>>>> +__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
>>>>> +			     uint64_t iova, uint64_t len)
>>>>> +{
>>>>> +	uint64_t hva, gpa, map_len;
>>>>> +	map_len = len;
>>>>> +
>>>>> +	hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
>>>>> +	if (map_len != len) {
>>>>> +		RTE_LOG(ERR, VHOST_CONFIG,
>>>>> +			"Failed to write log for IOVA 0x%0lx."
>>>>
>>>> PRIx64 should be used here, otherwise the build will be
>>>> broken on i686.
>>>>
>>>> It's better to add a space after '.'
>>> Thank you. Will do.
>>>>
>>>>
>>>>> +			"No IOTLB entry found\n",
>>
>> I personally prefer not to split error messages even it is is slightly
>> above 80 chars. It makes grepping for error messages easier.
> 
> +1
> 
Makes perfect sense. Addressed in the new version.
Thanks!

> 
>>
>>>>> +			iova);
>>>>> +		return;
>>>>> +	}
>>>>> +
>>>>> +	gpa = hva_to_gpa(dev, hva, len);
>>>>> +	if (gpa)
>>>>> +		__vhost_log_cache_write(dev, vq, gpa, len);
>>>>> +}
>>>>> +
>>>

-Adrián

Patch
diff mbox series

diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
index 7fb172912..16c7e4243 100644
--- a/lib/librte_vhost/rte_vhost.h
+++ b/lib/librte_vhost/rte_vhost.h
@@ -265,7 +265,7 @@  rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
  * @param vid
  *  vhost device ID
  * @param addr
- *  the starting address for write
+ *  the starting address for write (in guest physical address space)
  * @param len
  *  the length to write
  */
diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
index 8e45ce9f8..11fd5aede 100644
--- a/lib/librte_vhost/vdpa.c
+++ b/lib/librte_vhost/vdpa.c
@@ -201,7 +201,9 @@  rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
 				goto fail;
 			desc = desc_ring[desc_id];
 			if (desc.flags & VRING_DESC_F_WRITE)
-				vhost_log_write(dev, desc.addr, desc.len);
+				vhost_log_cache_write_iova(dev, vq,
+							   desc.addr,
+							   desc.len);
 			desc_id = desc.next;
 		} while (desc.flags & VRING_DESC_F_NEXT);
 
diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index e57dda22f..78457a77c 100644
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -200,6 +200,27 @@  __vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
 	}
 }
 
+void
+__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
+			     uint64_t iova, uint64_t len)
+{
+	uint64_t hva, gpa, map_len;
+	map_len = len;
+
+	hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
+	if (map_len != len) {
+		RTE_LOG(ERR, VHOST_CONFIG,
+			"Failed to write log for IOVA 0x%0lx."
+			"No IOTLB entry found\n",
+			iova);
+		return;
+	}
+
+	gpa = hva_to_gpa(dev, hva, len);
+	if (gpa)
+		__vhost_log_cache_write(dev, vq, gpa, len);
+}
+
 void *
 vhost_alloc_copy_ind_table(struct virtio_net *dev, struct vhost_virtqueue *vq,
 		uint64_t desc_addr, uint64_t desc_len)
diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 9d3883385..9fa70bc3c 100644
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -353,6 +353,9 @@  desc_is_avail(struct vring_packed_desc *desc, bool wrap_counter)
 void __vhost_log_cache_write(struct virtio_net *dev,
 		struct vhost_virtqueue *vq,
 		uint64_t addr, uint64_t len);
+void __vhost_log_cache_write_iova(struct virtio_net *dev,
+		struct vhost_virtqueue *vq,
+		uint64_t iova, uint64_t len);
 void __vhost_log_cache_sync(struct virtio_net *dev,
 		struct vhost_virtqueue *vq);
 void __vhost_log_write(struct virtio_net *dev, uint64_t addr, uint64_t len);
@@ -393,6 +396,19 @@  vhost_log_used_vring(struct virtio_net *dev, struct vhost_virtqueue *vq,
 	vhost_log_write(dev, vq->log_guest_addr + offset, len);
 }
 
+static __rte_always_inline void
+vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
+			   uint64_t iova, uint64_t len)
+{
+	if (likely(!(dev->features & (1ULL << VHOST_F_LOG_ALL))))
+		return;
+
+	if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+		__vhost_log_cache_write_iova(dev, vq, iova, len);
+	else
+		__vhost_log_cache_write(dev, vq, iova, len);
+}
+
 /* Macros for printing using RTE_LOG */
 #define RTE_LOGTYPE_VHOST_CONFIG RTE_LOGTYPE_USER1
 #define RTE_LOGTYPE_VHOST_DATA   RTE_LOGTYPE_USER1
diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 5b85b832d..22961cafe 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -178,7 +178,8 @@  do_data_copy_enqueue(struct virtio_net *dev, struct vhost_virtqueue *vq)
 
 	for (i = 0; i < count; i++) {
 		rte_memcpy(elem[i].dst, elem[i].src, elem[i].len);
-		vhost_log_cache_write(dev, vq, elem[i].log_addr, elem[i].len);
+		vhost_log_cache_write_iova(dev, vq, elem[i].log_addr,
+					   elem[i].len);
 		PRINT_PACKET(dev, (uintptr_t)elem[i].dst, elem[i].len, 0);
 	}
 
@@ -633,7 +634,7 @@  copy_vnet_hdr_to_desc(struct virtio_net *dev, struct vhost_virtqueue *vq,
 
 		PRINT_PACKET(dev, (uintptr_t)dst,
 				(uint32_t)len, 0);
-		vhost_log_cache_write(dev, vq,
+		vhost_log_cache_write_iova(dev, vq,
 				iova, len);
 
 		remain -= len;
@@ -733,7 +734,7 @@  copy_mbuf_to_desc(struct virtio_net *dev, struct vhost_virtqueue *vq,
 			} else {
 				PRINT_PACKET(dev, (uintptr_t)hdr_addr,
 						dev->vhost_hlen, 0);
-				vhost_log_cache_write(dev, vq,
+				vhost_log_cache_write_iova(dev, vq,
 						buf_vec[0].buf_iova,
 						dev->vhost_hlen);
 			}
@@ -748,8 +749,9 @@  copy_mbuf_to_desc(struct virtio_net *dev, struct vhost_virtqueue *vq,
 			rte_memcpy((void *)((uintptr_t)(buf_addr + buf_offset)),
 				rte_pktmbuf_mtod_offset(m, void *, mbuf_offset),
 				cpy_len);
-			vhost_log_cache_write(dev, vq, buf_iova + buf_offset,
-					cpy_len);
+			vhost_log_cache_write_iova(dev, vq,
+						   buf_iova + buf_offset,
+						   cpy_len);
 			PRINT_PACKET(dev, (uintptr_t)(buf_addr + buf_offset),
 				cpy_len, 0);
 		} else {