Re: virtio-crypto: Inquiry about virtio crypto

[Bibo Mao]

Hi gonglei,

Sorry to bother you again.

I notice that numa node is supported with virtio-crypto device. Is there 
multiple PCIE root bridges with different numa nodes supported on some 
VM models?

I ask this question because I do not know whether it is possible to 
preallocate virtio_crypto_op_data_req buffer and IV buffer within 
structure virtio_crypto_sym_request. Only that there is no node 
information when virtio_crypto_sym_request is allocated.

Regards
Bibo Mao


On 2025/11/27 上午10:56, Gonglei (Arei) wrote:
> Hi,
>
> > -----Original Message-----
> > From: Bibo Mao <maobibo@xxxxxxxxxxx>
> > Sent: Thursday, November 27, 2025 9:43 AM
> > To: Gonglei (Arei) <arei.gonglei@xxxxxxxxxx>
> > Cc: linux-crypto@xxxxxxxxxxxxxxx; virtualization@xxxxxxxxxxxxxxx; linux-kernel
> > <linux-kernel@xxxxxxxxxxxxxxx>; QEMU devel <qemu-devel@xxxxxxxxxx>
> > Subject: virtio-crypto: Inquiry about virtio crypto
> >
> > Hi gonglei,
> >
> >      I am investigating how to use HW crypto accelerator in VM. It seems that
> > virtio-crypto is one option, however only aes skcipher algo is supported and
>
> Actually akcipher service had been supported by virtio-crypto in 2022.
>
> > virtio-crypto device is not suggested by RHEL 10.
> >
> > https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/10/html
> > /configuring_and_managing_linux_virtual_machines/feature-support-and-limit
> > ations-in-rhel-10-virtualization
> >
> >     I want to know what is the potential issued with virtio-crypto.
>
> This question is too big, maybe you'd better ask RHEL guys. :(
>
> Regards,
> -Gonglei
>
> > Regards
> > Bibo Mao