QEMU >= 4.0 is able to boot into the uncompressed kernel using the PVH
entry point, but to get this `CONFIG_PVH` must be enabled in the guest
kernel and `pvh.bin` installed in the host.
Booting uncompressed kernels in QEMU 5.0 can reduce the memory footprint,
~17% for KSM and ~15% nonKSM.
fixes#1029
Signed-off-by: Julio Montes <julio.montes@intel.com>
The config file created by kernel fragments scheme is quite different
with the old arm64_kata_kvm_5.4.x.
So I will update arm64_kata_kvm_5.4.x for consistency.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Backport Anshuman Khandual's patch series of Enabling memory hot
remove on aarch64(https://patchwork.kernel.org/cover/11419305/)
to v5.4.x.
XONE_DEVICE is dependent on the implementation of memory hot remove.
This patch series has already been merged, and queued for 5.7.
After backporting this series, we could finally enable nvdimm/dax
on arm64.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Add a few arm64-specific configs and classify them into seven new categories
, that is,
1. base architecture-dependent options(base.conf)
It also includes varient-specific features, like CONFIG_ARM64_PMEM is
one ARMv8.2 arichitectural features.
2. crypto-related options(crypto.conf)
ARMv8 adds cryptographic instructions that could significantly improve
performance on tasks such as AES encryption and SHA1 and SHA256 hashing.
3. device tree related options(dt.conf)
The "Open Firmware Device Tree", or simply Device Tree (DT), is a data
structure and language for describing hardware, which is commonly
used in arm architecture.
4. ARM errata workarounds options(errata.conf)
There are many Kconfig entires under "Kernel Features" ->
"ARM errata workarounds via the alternatives framework", which provides
software workarounds to mitigate systems affected by those erratum.
Vendor-specific option will be left to users to decide.
5. pci related options(pci.conf)
a simplified pci host controller for mach-virt.
6. serial devices options(serial.conf)
CONFIG_SERIAL_OF_PLATFORM is used for all 8250 compatible serial ports
that are probed through device tree.
7. rtc related options(rtc.conf)
we don't have KVM’s paravirtualized clock and ptp implementation is
still under experimental mode, so we need rtc on aarch64.
QEMU provides an emulated ARM AMBA PrimeCell PL031 RTC.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Compaction is the only memory management component to form high order
(larger physically contiguous) memory blocks reliably.
The page allocator relies on compaction heavily and the lack of the feature
can lead to unexpected OOM killer invocations for high order memory requests.
We shouldn't disable this option unless there really is a strong reason.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
mmio devices are required in firecracker, and for now, x86_64 and
aarch64 are all supporting kata containers with firecracker.
So, we need to move mmio-related configs to common dir.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
There exists a few security-related configs, which are x86-64 specific.
CONFIG_LEGACY_VSYSCALL_NONE=y
CONFIG_RETPOLINE=y
CONFIG_RELOCATABLE and CONFIG_RANDOMIZE_BASE are kinds of tangled on
aarch64, if CONFIG_RANDOMIZE_BASE=y, then CONFIG_RELOCATABLE will be
selected automatically.
CONFIG_RANDOMIZE_BASE will randomize the virtual address at which the
kernel image is loaded, which as a security feature could deter exploit
attempts relying on knowledge of the location of kernel internals.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
There exists a few configs about linux guest support or optimization
that are not supported on aarch64.
CONFIG_HYPERVISOR_GUEST is only defined under arch/x86/Kconfig and
unfortunately, CONFIG_KVM_GUEST is not supported on aarch64 for now.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
For now, a few configs as follows in common acpi dir are truly x86-spcecific
or disable by default on arm64.
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_HOTPLUG_IOAPIC=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP
CONFIG_ACPI_LPIT=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_PROCESSOR_CSTATE=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
CONFIG_HAVE_ACPI_APEI_NMI=y
And I also add a few configs which are aarch64-specific.
Like CONFIG_ACPI_REDUCED_HARDWARE_ONLY=y, since ARM64 can run properly
in ACPI hardware reduced mode.
Fixes: #1004
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
The enablement of ptp_kvm for arm is under review, see [1].
So we have to apply private patch to enable it in 5.4 kernel.
ptp_kvm can offer the capability of time sync in kata even there
is no network available and higher precision than time sync
service depend on network.
note:
If you want to use this feature on your arm machine, the host kernel
also need apply this patch. we recommend that your host kernel version
is the 5.4, then you can apply this patch smoothly.
[1] https://patchwork.kernel.org/cover/11372743/Fixes: #997
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
To support booting from pmem with cloud-hypervisor, we need to enable
the virtio-pmem in our kernel.
Fixes: #1013
Signed-off-by: Bo Chen <chen.bo@intel.com>
Fix the `build-kernel.sh` script to sort patches correctly. Previously,
it relied on `find(1)` for the ordering. However, `find(1)` does not
guarantee any ordering of files within a directory. Since the ordering
could therefore be "random", it was quite possible for patches to be
applied in the wrong order, resulting in conflicts.
Fixes: #1003.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
This patch add patch file for virtio-fs-v0.3 kernel to enable memory hot
remove to let virtio-fs available on arm64. Also, kernel config file for
virtio-fs-v0.3x for arm64 is offered.
Fixes: #973
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Add option '-f' in build-kernel.sh to force the generation of .config
Signed-off-by: Jimmy Xu <junming.xjm@antfin.com>
n 请为您的变更输入提交说明。以 '#' 开始的行将被忽略，而一个空的提交
vmlinux on arm64
arm64 does not use vmlinux to boot, Image is used instead.
Otherwise, kata can't boot from vmlinux.container
Besides, given that firecracker only supports booting from Image,
don't set vmlinux for firecracker target
Fixes#930
Signed-off-by: Jia He <justin.he@arm.com>
libcontainer's cgroups V2 implementation requires BPF to run a BPF
program in the container
fixes#955
Signed-off-by: Julio Montes <julio.montes@intel.com>
There was a race condition between bind() and listen() that was hit very
rarely when using Kata Containers and Cloud-Hypervisor. It's been
identified the problem is really coming from the virtio-vsock driver,
which is fixed by those new kernel patches uploaded for each version of
the kernels used by Kata Containers.
Fixes#932
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Linux has embraced another LTS kernel version v5.4.x.
Update the kernel config for Power as well.
Fixes: #936
Signed-off-by: Nitesh Konkar <niteshkonkar@in.ibm.com>
Dont think these are options are required at all.
Remove them from fragments and whitelist.
Fixes#924
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
The whitelist contains options that we dont really care.
Always apply it, irrespective of if we are using an
experimental kernel.
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
Since we don't know how many CPUs can have the host, we should
use the maximum number of CPUs supported by KVM (240).
255 is the maximum number of CPUs supported in the kernel, but the
maximmum number of CPUs recommended by KVM is 240, if more than 240
CPUs are used, next error will be returned by QEMU
```
Number of hotpluggable cpus requested (255) exceeds the
recommended cpus supported by KVM (240)
```
fixes#922fixeskata-containers/runtime#2413
Signed-off-by: Julio Montes <julio.montes@intel.com>
Although CONFIG_IPV6 is enabled, this additional config is
needed so that multiple route tables are used for ipv6.
Without this, the kernel adds routes for "fe80::/64"
with proto kernel in the main table instead of the
local routing table.
This makes the behaviour similar to regular containers.
Fixes#920
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
Firecracker needs CONFIG_X86_MPPARSE to support `vcpu_count`, otherwise the
amount of cpus wil always be 1.
fixes#901
Signed-off-by: Julio Montes <julio.montes@intel.com>
The bootloader in firecracker on ARM platform only supports kernel
in Portable Executable(PE) format.
So we need `build-kernel.sh` to provide correct kernel image format
when parameter `hypervisor_target`, `-t`, defined with firecracker.
Fixes: #886
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Linux has embraced another LTS kernel version v5.4.x.
If we, AArch64, update stable guest kernel version
to v5.4.x, we could get rid of huge chunkes of backport
patches under patches/4.19.x/.
Except following configs are penny-defined turned on/off,
all the other are sort of `built-in` defined or inherited
from v4.19.x.
1. CONFIG_IO_URING = y
This option enables support for the io_uring interface.
2. CONFIG_RODATA_FULL_DEFAULT_ENABLED = n
Apply read-only attributes of VM areas to the linear
alias of the backing pages as well.
3. CONFIG_ARM64_TAGGED_ADDR_ABI = n
When this option is enabled, user applications can opt in to
a relaxed ABI allow virtual tagged addresses to be passed to
system calls as pointer arguments.
4. CONFIG_ARM64_PTR_AUTH = n
Pointer authentication provides instructions for signing and
authenticating pointers against secret keys, which can be used to
mitigate Return Oriented Programming (ROP) and other attacks.
Fixes: #882
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
As no printk time enabled for arm64, printk and dmesg will show
without timestamp.
This patch enables printk_time in kernel for arm64.
Fixes: #875
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
`get_config_version` should not log anything because it's used
by functions that print a string as return value, hence its return value
can be tainted, i.e `get_config_version`.
fixes#867
Signed-off-by: Julio Montes <julio.montes@intel.com>
NEW_VERSION may be unbound whereas kata_version should be defined
following manual release process docs and while using github actions.
Use kata_version instead to checkout correct version of patches.
Check if kata_version is not empty before doing so,
as the release may be triggered for master as well.
Fixes#857
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
Checkout tag for packaging repo based on env variable NEW_VERSION
or kata_version with kata_version taking precedence.
With this, we checkout to the right version of packaging repo before
applying kernel patches.
Fixes#849
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
Althought, we changed the script "gen_versions_txt.sh" to accept a tag
rather than a branch, this change is not sufficient.
This script generates the right version file based on a tag, but
function `get_from_kata_deps` does not use this, and ends up using the
master branch instead. This is because this function looks at an env
variable called $BRANCH and ends up using master branch if the variable
is not defined.
Pass the tag/new version to the build scripts, so that this tag is
passed along to `get_from_kata_dep`.
With this change, the correct version information is consumed by the
build scripts for the various hypervisors and kernel.
Fixes#831
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
we need to do patch update for kernel bump to v4.19.86.
Fixes: #806
Depends-on: github.com/kata-containers/runtime#2185
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
While running the build-kernel.sh script with no arguments, the help is
printed twice. This PR will fix that.
Fixes#433
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>
This will allow us to run a VM in fips mode.
The intention is to check if the host is running in fips mode
and then start a container in fips mode as well.
Fixes#787
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
This is a experimental feature for arm64 as linux kernel has
not enable kvm ptp for arm64.
ptp_kvm need co-work from host and guest, so you need add this
patch both to your guest and host. Host kernel version is better
lower than 5.0 and higher than 4.19.
another version of this patch base on kernel v5.3 is under review in kernel upstream, refer to [1]
to see the full info.
[1] https://lkml.org/lkml/2019/8/29/80Fixes: #692
Signed-off-by: Jianyong Wu jianyong.wu@arm.com
