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docs: Consolidate AArch64 kernel building doc into README

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Signed-off-by: Henry Wang <Henry.Wang@arm.com>
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Henry Wang 2022-12-08 00:28:08 -05:00 committed by Rob Bradford
parent 709545920e
commit de4cd49c6d
2 changed files with 12 additions and 20 deletions
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16
README.md
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@ -175,7 +175,7 @@ $ ./cloud-hypervisor \
#### Building your Kernel
Cloud Hypervisor also supports direct kernel boot into a `vmlinux` ELF kernel (compiled with PVH support). In order to support development there is a custom branch; however provided the required options are enabled any recent kernel will suffice.
Cloud Hypervisor also supports direct kernel boot. For x86-64, a `vmlinux` ELF kernel (compiled with PVH support) is needed. In order to support development there is a custom branch; however provided the required options are enabled any recent kernel will suffice.
To build the kernel:
@ -183,15 +183,23 @@ To build the kernel:
# Clone the Cloud Hypervisor Linux branch
$ git clone --depth 1 https://github.com/cloud-hypervisor/linux.git -b ch-5.15.12 linux-cloud-hypervisor
$ pushd linux-cloud-hypervisor
# Use the cloud-hypervisor kernel config to build your kernel
# Use the x86-64 cloud-hypervisor kernel config to build your kernel for x86-64
$ wget https://raw.githubusercontent.com/cloud-hypervisor/cloud-hypervisor/main/resources/linux-config-x86_64
$ cp linux-config-x86_64 .config
# Use the AArch64 cloud-hypervisor kernel config to build your kernel for AArch64
$ wget https://raw.githubusercontent.com/cloud-hypervisor/cloud-hypervisor/main/resources/linux-config-aarch64
$ cp linux-config-x86_64 .config # x86-64
$ cp linux-config-aarch64 .config # AArch64
# Do native build of the x86-64 kernel
$ KCFLAGS="-Wa,-mx86-used-note=no" make bzImage -j `nproc`
# Do native build of the AArch64 kernel
$ make -j `nproc`
$ popd
```
The `vmlinux` kernel image will then be located at
For x86-64, the `vmlinux` kernel image will then be located at
`linux-cloud-hypervisor/arch/x86/boot/compressed/vmlinux.bin`.
For AArch64, the `Image` kernel image will then be located at
`linux-cloud-hypervisor/arch/arm64/boot/Image`.
#### Disk image

16
docs/arm64.md
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@ -7,22 +7,6 @@ booting and direct-kernel booting. The document covers both methods.
All the steps are based on Ubuntu. We use the Ubuntu cloud image for guest VM
disk.
## Direct-kernel booting
Alternativelly, you can build your own kernel for guest VM. This way, UEFI is
not involved and ACPI cannot be enabled.
### Building kernel
```bash
$ pushd $CLOUDH
$ git clone --depth 1 "https://github.com/cloud-hypervisor/linux.git" -b ch-5.12
$ cd linux
$ cp $CLOUDH/cloud-hypervisor/resources/linux-config-aarch64 .config
$ make -j `nproc`
$ popd
```
### Booting the guest VM
```bash