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vmm: only use KVM_ARM_VCPU_PMU_V3 if available

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Having PMU in guests isn't critical, and not all hardware supports
it (e.g. Apple Silicon).

CpuManager::init_pmu already has a fallback for if PMU is not
supported by the VCPU, but we weren't getting that far, because we
would always try to initialise the VCPU with KVM_ARM_VCPU_PMU_V3, and
then bail when it returned with EINVAL.

Signed-off-by: Alyssa Ross <hi@alyssa.is>
This commit is contained in:
Alyssa Ross
2023-04-10 11:11:46 +00:00
committed by Bo Chen
parent 0aa858c266
commit 4485210de5
4 changed files with 13 additions and 4 deletions
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Cargo.lock generated
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@@ -545,8 +545,7 @@ dependencies = [
[[package]]
name = "kvm-ioctls"
version = "0.13.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b8f8dc9c1896e5f144ec5d07169bc29f39a047686d29585a91f30489abfaeb6b"
source = "git+https://github.com/rust-vmm/kvm-ioctls?branch=main#23a3bb045a467e60bb00328a0b13cea13b5815d0"
dependencies = [
"kvm-bindings",
"libc",