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build: unify QEMU and gem5 kernel configs! The last one!

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Split optional and required kernel configs into separate files.

readme: describe how our kernel configs are generated from Buildroot

readme: document QEMU `-no-reboot` and speculate gem5 `panic_on_panic`
in preparation for some more automated bisection with ktest.
This commit is contained in:
Ciro Santilli
2018-04-21 11:39:06 +01:00
parent 4e0d9af81f
commit 2bddcc2891
9 changed files with 99 additions and 3048 deletions
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22
kernel_config_fragment → kernel_config_fragment/default
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@@ -1,8 +1,3 @@
# Changes to this file are automatically trigger kernel reconfigures
# even without using the linux-reconfigure target.
#
# Timestamps are used to decide if changes happened or not.
CONFIG_BLK_DEV_INITRD=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_MODULE_SRCVERSION_ALL=y
@@ -200,22 +195,5 @@ CONFIG_DUMMY_IRQ=m
# Like CONFIG_X86_PTDUMP for ARM.
CONFIG_ARM64_PTDUMP=y
## aarch64
# For some reason not selected by the Buildroot kernel config by default as it was for arm,
# and pci modules fail to build. Not that we have PCI working on ARM anyways.
CONFIG_PCI=y
### gem5 aarch64
# Minimal options required to run gem5 aarch64 in addition to QEMU's aarch64 setup.
# Doing such a minimal boot made the gem5 boot 3x faster on the P51, which is awesome.
CONFIG_ATA_PIIX=y
CONFIG_PCI_HOST_GENERIC=y
### qemu aarch64 ext2
# Also requires gem5 aarch64 options.
# Not needed for initrd / initramfs.
CONFIG_VIRTIO_PCI=y
# For record and replay.
CONFIG_8139CP=y

25
kernel_config_fragment/min Normal file
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@@ -0,0 +1,25 @@
# This file contains only configs which are required to boot all configurations.
## gem5 x86
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
## qemu aarch64
# For some reason not selected by the Buildroot kernel config by default as it was for arm,
# and pci modules fail to build. Not that we have PCI working on ARM anyways.
CONFIG_PCI=y
## gem5 aarch64
# Minimal options required to run gem5 aarch64 in addition to QEMU's aarch64 setup.
# Doing such a minimal boot made the gem5 boot 3x faster on the P51, which is awesome.
CONFIG_ATA_PIIX=y
CONFIG_PCI_HOST_GENERIC=y
## qemu aarch64 ext2
# Also requires gem5 aarch64 options.
# Not needed for initrd / initramfs.
CONFIG_VIRTIO_PCI=y