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Groups > linux.debian.kernel > #65942

Bug#947759: Configuration optimizations for the cloud variant

Cross-posted to 2 groups.

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Source: linux
Severity: wishlist

A few requests for changes to the cloud configuration:

- Please disable CONFIG_ACPI_BGRT; a cloud kernel doesn't need to spend
  time or code space looking for a boot logo that won't exist.

- Please disable the CONFIG_CPU_SUP_* options for CPUs that no cloud
  provider uses.

- Please disable CONFIG_GNSS_*, which won't be hooked up to a cloud
  server.

- Please disable CONFIG_GTP for the same reason.

- Please configure CONFIG_INPUT_MOUSEDEV as a module, not built-in, as
  most cloud servers won't have a mouse and probing for one takes time.

- Please consider changing the default kernel compression to GZIP, which
  decompresses faster and thus boots faster.

- Please change CONFIG_NET_MPLS_GSO from y to m (and consider doing this
  for the non-cloud kernel too); it doesn't need to be built into the
  kernel.

- Please change CONFIG_NF_NAT_* and CONFIG_NF_MASQUERADE_* from y to m,
  as many systems won't need those modules and shouldn't need to load
  their code.

- Please compile in the NVME driver and the EXT4 filesystem; this will
  allow many cloud systems to avoid using an initramfs at all, which
  substantially improves boot time.

- Please disable CONFIG_NUMA_EMU, only used to create fake-NUMA systems
  for debugging.

- Please disable CONFIG_PCIPCWATCHDOG, CONFIG_PPS, and CONFIG_RMI4_*,
  which won't appear on a cloud server.

- Please enable CONFIG_SCHED_MC_PRIO (on both cloud and non-cloud
  kernels).

- Please disable CONFIG_VFIO_PCI_VGA and CONFIG_VGA_SWITCHEROO, which
  won't appear on cloud.

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Thread

Bug#947759: Configuration optimizations for the cloud variant Josh Triplett <josh@joshtriplett.org> - 2019-12-30 09:10 +0100
  Bug#947759: Configuration optimizations for the cloud variant Ben Hutchings <ben@decadent.org.uk> - 2019-12-31 18:10 +0100
    Bug#947759: Configuration optimizations for the cloud variant Josh Triplett <josh@joshtriplett.org> - 2020-01-01 00:40 +0100
      Bug#947759: Configuration optimizations for the cloud variant Josh Triplett <josh@joshtriplett.org> - 2020-01-21 01:50 +0100
        Bug#947759: Configuration optimizations for the cloud variant Noah Meyerhans <noahm@debian.org> - 2020-01-21 03:00 +0100
          Bug#947759: Configuration optimizations for the cloud variant Noah Meyerhans <noahm@debian.org> - 2020-02-04 21:10 +0100
            Bug#947759: Configuration optimizations for the cloud variant Josh Triplett <josh@joshtriplett.org> - 2020-02-05 01:00 +0100
              Bug#947759: Configuration optimizations for the cloud variant Noah Meyerhans <noahm@debian.org> - 2020-02-05 22:40 +0100
                Bug#947759: Configuration optimizations for the cloud variant Josh Triplett <josh@joshtriplett.org> - 2020-02-06 03:00 +0100
  Bug#947759: marked as done (Configuration optimizations for the  cloud variant) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-04-17 05:10 +0200

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