From: David Hildenbrand <[email protected]> [redhat] virtio: enable virtio-mem on x86-64 as tech-preview
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2014492 Let's enable CONFIG_VIRTIO_MEM=m on x86-64 in RHEL 9. As it will be tech-preview, properly taint the kernel as soon as we're initializing the driver for an actual device in a !kdump environment where we might actually hot(un)plug memory when instructed by the hypervisor. We won't be tainting in a kdump kernel where the sole purpose is to check if a given PFN is actually part of a plugged virtio-mem device and can be dumped safely. Signed-off-by: David Hildenbrand <[email protected]> diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index blahblah..blahblah 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -2754,6 +2754,19 @@ static int virtio_mem_probe(struct virtio_device *vdev) /* trigger a config update to start processing the requested_size */ if (!vm->in_kdump) { +#ifdef CONFIG_RHEL_DIFFERENCES + static bool printed; + + /* + * virtio-mem, and especially its memory hot(un)plug + * functionality, is tech-preview. + */ + if (!printed) { + printed = true; + mark_tech_preview("virtio_mem", THIS_MODULE); + } +#endif /* CONFIG_RHEL_DIFFERENCES */ + atomic_set(&vm->config_changed, 1); queue_work(system_freezable_wq, &vm->wq); } diff --git a/redhat/configs/common/generic/x86/x86_64/CONFIG_VIRTIO_MEM b/redhat/configs/common/generic/x86/x86_64/CONFIG_VIRTIO_MEM index blahblah..blahblah 100644 --- a/redhat/configs/common/generic/x86/x86_64/CONFIG_VIRTIO_MEM +++ b/redhat/configs/common/generic/x86/x86_64/CONFIG_VIRTIO_MEM @@ -1 +1 @@ -# CONFIG_VIRTIO_MEM is not set +CONFIG_VIRTIO_MEM=m diff --git a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_VIRTIO_MEM b/redhat/configs/fedora/generic/x86/x86_64/CONFIG_VIRTIO_MEM deleted file mode 100644 index blahblah..blahblah 0 --- a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_VIRTIO_MEM +++ /dev/null @@ -1 +0,0 @@ -CONFIG_VIRTIO_MEM=m -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1535 _______________________________________________ kernel mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected] Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
