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| author | Chenggang <chenggang.qcg@alibaba-inc.com> | 2018-09-13 21:46:03 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-09-13 21:47:11 -0700 |
| commit | faa34a0738456f5328cf99de13622a150042776d (patch) | |
| tree | 72f2aaac72df21efac1c4ce55d6a711ae0a7d296 /pkg/sentry/fs/tty/master.go | |
| parent | 29a7271f5da9fdb7b4a9a6c9ea61421ce6844a73 (diff) | |
platform/kvm: Get max vcpu number dynamically by ioctl
The old kernel version, such as 4.4, only support 255 vcpus.
While gvisor is ran on these kernels, it could panic because the
vcpu id and vcpu number beyond max_vcpus.
Use ioctl(vmfd, _KVM_CHECK_EXTENSION, _KVM_CAP_MAX_VCPUS) to get max
vcpus number dynamically.
Change-Id: I50dd859a11b1c2cea854a8e27d4bf11a411aa45c
PiperOrigin-RevId: 212929704
Diffstat (limited to 'pkg/sentry/fs/tty/master.go')
0 files changed, 0 insertions, 0 deletions