[dpdk-dev] [PATCH] vhost: add __rte_experimental to rte_vhost_va_from_guest_pa

Maxime Coquelin maxime.coquelin at redhat.com
Tue Sep 24 18:05:39 CEST 2019



On 9/24/19 6:04 PM, Ferruh Yigit wrote:
> On 9/24/2019 12:26 AM, Harris, James R wrote:
>>
>>
>> On 9/23/19, 8:41 AM, "Yigit, Ferruh" <ferruh.yigit at intel.com> wrote:
>>
>>     On 9/18/2019 2:12 PM, Maxime Coquelin wrote:
>>     > 
>>     > 
>>     > On 8/20/19 11:37 AM, Jim Harris wrote:
>>     >> This function is listed under EXPERIMENTAL in the
>>     >> rte_vhost_version.map, so it needs to be marked
>>     >> with __rte_experimental in the header file as well.
>>     >>
>>     >> Found by check-experimental-syms.sh when trying to compile
>>     >> DPDK with -finstrument-functions.  This script didn't
>>     >> catch this in the normal case, since the function is
>>     >> declared __rte_always_inline.
>>     >>
>>     >> Signed-off-by: Jim Harris <james.r.harris at intel.com>
>>     >> ---
>>     >>  lib/librte_vhost/rte_vhost.h |    1 +
>>     >>  1 file changed, 1 insertion(+)
>>     >>
>>     >> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
>>     >> index 7fb172912..fc27bc21e 100644
>>     >> --- a/lib/librte_vhost/rte_vhost.h
>>     >> +++ b/lib/librte_vhost/rte_vhost.h
>>     >> @@ -225,6 +225,7 @@ rte_vhost_gpa_to_vva(struct rte_vhost_memory *mem, uint64_t gpa)
>>     >>   * @return
>>     >>   *  the host virtual address on success, 0 on failure
>>     >>   */
>>     >> +__rte_experimental
>>     >>  static __rte_always_inline uint64_t
>>     >>  rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
>>     >>  						   uint64_t gpa, uint64_t *len)
>>     >>
>>     > 
>>     > Fixed commit message to comply with check-git-log tool.
>>     > 
>>     > Applied to dpdk-next-virtio/master.
>>     
>>     This is breaking the 'vhost_scsi' sample application since it is using this
>>     experimental API [1].
>>     Build system should be updated to say sample application is allowed to using
>>     experimental APIs.
>>     Can you please send a new version?
>>
>> Thanks Ferruh.  I missed that.  Does this mean adding the following to examples/vhost_scsi/Makefile?
>>     
>> CFLAGS += -DALLOW_EXPERIMENTAL_API
>>
>> And this to examples/vhost_scsi/meson.build?
>>
>> allow_experimental_apis = true
> 
> That is it.
> 
>>
>> Maxime - please let me know if you need a patch from me that you'll apply to dpdk-next-virtio/master, or if you would send such a patch yourself.

I checked Ferruh's tree and can see Ferruh dropped your patch, so please
send a new revision.

Thanks,
Maxime
>>
>> Thanks,
>>
>> -Jim
>>  
>>
> 


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