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qemu: add cpu_features option

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[ port from runtime commit 0100af18a2afdd6dfcc95129ec6237ba4915b3e5 ]

To control whether guest can enable/disable some CPU features. E.g. pmu=off,
vmx=off. As discussed in the thread [1], the best approach is to let users
specify them. How about adding a new option in the configuration file.

Currently this patch only supports this option in qemu,no other vmm.

[1] https://github.com/kata-containers/runtime/pull/2559#issuecomment-603998256

Signed-off-by: Jia He <justin.he@arm.com>
Signed-off-by: Peng Tao <bergwolf@hyper.sh>
This commit is contained in:
Jia He
2020-06-29 20:16:11 -07:00
committed by Peng Tao
parent 520295b938
commit fa9d619e8a
10 changed files with 90 additions and 5 deletions
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5
src/runtime/cli/config/configuration-qemu-virtiofs.toml.in
View File

@@ -37,6 +37,11 @@ firmware = "@FIRMWAREPATH@"
# For example, `machine_accelerators = "nosmm,nosmbus,nosata,nopit,static-prt,nofw"`
machine_accelerators="@MACHINEACCELERATORS@"
# CPU features
# comma-separated list of cpu features to pass to the cpu
# For example, `cpu_features = "pmu=off,vmx=off"
cpu_features="@CPUFEATURES@"
# Default number of vCPUs per SB/VM:
# unspecified or 0 --> will be set to @DEFVCPUS@
# < 0 --> will be set to the actual number of physical cores

5
src/runtime/cli/config/configuration-qemu.toml.in
View File

@@ -38,6 +38,11 @@ firmware = "@FIRMWAREPATH@"
# For example, `machine_accelerators = "nosmm,nosmbus,nosata,nopit,static-prt,nofw"`
machine_accelerators="@MACHINEACCELERATORS@"
# CPU features
# comma-separated list of cpu features to pass to the cpu
# For example, `cpu_features = "pmu=off,vmx=off"
cpu_features="@CPUFEATURES@"
# Default number of vCPUs per SB/VM:
# unspecified or 0 --> will be set to @DEFVCPUS@
# < 0 --> will be set to the actual number of physical cores