On torsdag 13 september 2018 kl. 12:58:03 EEST George Dunlap wrote: > Dag, > Just verified after a lengthy compilation of the kernel that the patch really works and now I can see a TPM on the virtual side! > Thanks for tracking this down. Any chance you could send a PR to > https://github.com/CentOS-virt7/xen-kernel? I will definitely join that mailing list. Have a feeling this is not the last problem I will see :-) > Otherwise, Anthony or I will take a look when we get a chance. But I would appreciate it if somebody used to the procedures would pick it up from here. The patch was the following: =================================== diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index 5aaa268..dd83a07 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -203,7 +203,7 @@ static int setup_ring(struct xenbus_device *dev, struct tpm_private *priv) return -ENOMEM; } - rv = xenbus_grant_ring(dev, &priv->shr, 1, &gref); + rv = xenbus_grant_ring(dev, priv->shr, 1, &gref); if (rv < 0) return rv; ==================================== Best Dag