From: David Hildenbrand <david@xxxxxxxxxx> configs: enable CONFIG_CMA on x86_64 in ARK Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1945002 Upstream: RHEL only Enable CONFIG_CMA on x86_64 in ARK as we already have in fedora; move the relevant configs from redhat/configs/fedora to redhat/configs/common. As one example CMA will be required to eventually support RDMA<->GPU p2pdma via dma-buf. As another example, CMA will be useful useful for more reliable runtime allocation of gigantic pages. Let's keep CONFIG_DMABUF_HEAPS_CMA disabled for now -- we'll enable it separately, via a different BZ in the future. Note that: * CONFIG_DMA_CMA=Y has to be set due to FB_HYPERV, which force-enables it via "select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA" * CONFIG_CMA_AREAS has to be configured due to CONFIG_CMA; use the fedora value (7). We can bump it up once we actually need more areas. * CONFIG_CMA_DEBUG and CONFIG_CMA_DEBUGFS have to be configured due to CONFIG_CMA; use the fedora values, which disables both. * CONFIG_DMA_PERNUMA_CMA has to be configured due to CONFIG_DMA_CMA; use the fedora value, which disables it. We can enable once we actually need it. * CONFIG_CMA_ALIGNMENT, CONFIG_CMA_SIZE_MBYTES, CONFIG_CMA_SIZE_SEL_MAX, CONFIG_CMA_SIZE_SEL_MBYTES, CONFIG_CMA_SIZE_SEL_MIN, CONFIG_CMA_SIZE_SEL_PERCENTAGE have to be configured due to CONFIG_DMA_CMA; use the fedora values, which correspond to the defaults * 1MiB alignment of buffers * CMA being disabled, requiring explicit "cma=size[MG]" on the cmdline Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> diff a/redhat/configs/ark/generic/CONFIG_DMABUF_HEAPS_CMA b/redhat/configs/ark/generic/CONFIG_DMABUF_HEAPS_CMA --- /dev/null +++ b/redhat/configs/ark/generic/CONFIG_DMABUF_HEAPS_CMA @@ -0,0 +1 @@ +# CONFIG_DMABUF_HEAPS_CMA is not set diff a/redhat/configs/fedora/generic/CONFIG_DMA_PERNUMA_CMA b/redhat/configs/common/generic/CONFIG_DMA_PERNUMA_CMA --- a/redhat/configs/fedora/generic/CONFIG_DMA_PERNUMA_CMA +++ b/redhat/configs/common/generic/CONFIG_DMA_PERNUMA_CMA diff a/redhat/configs/fedora/generic/x86/CONFIG_CMA_ALIGNMENT b/redhat/configs/common/generic/x86/CONFIG_CMA_ALIGNMENT --- a/redhat/configs/fedora/generic/x86/CONFIG_CMA_ALIGNMENT +++ b/redhat/configs/common/generic/x86/CONFIG_CMA_ALIGNMENT diff a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_MBYTES b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_MBYTES --- a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_MBYTES +++ b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_MBYTES diff a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_MAX b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_MAX --- a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_MAX +++ b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_MAX diff a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_MBYTES b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_MBYTES --- a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_MBYTES +++ b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_MBYTES diff a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_MIN b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_MIN --- a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_MIN +++ b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_MIN diff a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_PERCENTAGE b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_PERCENTAGE --- a/redhat/configs/fedora/generic/x86/CONFIG_CMA_SIZE_SEL_PERCENTAGE +++ b/redhat/configs/common/generic/x86/CONFIG_CMA_SIZE_SEL_PERCENTAGE diff a/redhat/configs/fedora/generic/x86/CONFIG_DMA_CMA b/redhat/configs/common/generic/x86/CONFIG_DMA_CMA --- a/redhat/configs/fedora/generic/x86/CONFIG_DMA_CMA +++ b/redhat/configs/common/generic/x86/CONFIG_DMA_CMA diff a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA --- a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA +++ b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA diff a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA_AREAS b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA_AREAS --- a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA_AREAS +++ b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA_AREAS diff a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA_DEBUG b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA_DEBUG --- a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA_DEBUG +++ b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA_DEBUG diff a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA_DEBUGFS b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA_DEBUGFS --- a/redhat/configs/fedora/generic/x86/x86_64/CONFIG_CMA_DEBUGFS +++ b/redhat/configs/common/generic/x86/x86_64/CONFIG_CMA_DEBUGFS -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1023 _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx 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/kernel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
