I enabled CMA_DEBUG & CMA_DEBUGFS and booted w/ cma=128M so that we can see the CMA state when no allocations fail.
root@d06-4:/sys/kernel/debug/cma/cma-reserved# cat count 32768 root@d06-4:/sys/kernel/debug/cma/cma-reserved# cat used 15630 Looks like we're actually using ~61M - and perhaps the alignment requirements are pushing us over the 64M barrier (cma=64M still results in some cma_alloc failures). ** Attachment added: "dmesg w/ CMA_DEBUG=y" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1823753/+attachment/5254279/+files/dmesg-cma-debug.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1823753 Title: arm64: cma_alloc errors at boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1823753/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
