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authorYong He <chenglang.hy@alibaba-inc.com>2019-07-02 22:02:15 -0700
committergVisor bot <gvisor-bot@google.com>2019-07-02 22:03:28 -0700
commit85b27a9f8f0c04f10f16a93e848efb926a391638 (patch)
treeaf8b6a155f522624f38ca6330d0fdf9114d64f52 /pkg/seccomp/BUILD
parent753da9604efc74dced3055bb2f5c6bef2d98fe6c (diff)
Solve BounceToKernel may hang issue
BounceToKernel will make vCPU quit from guest ring3 to guest ring0, but vCPUWaiter is not cleared when we unlock the vCPU, when next time this vCPU enter guest mode ring3, vCPU may enter guest mode with vCPUWaiter bit setted, this will cause the following BounceToKernel to this vCPU hangs at waitUntilNot. Halt may workaroud this issue, because halt process will reset vCPU status into vCPUUser, and notify all waiter for vCPU state change, but if there is no exception or syscall in this period, BounceToKernel will hang at waitUntilNot. PiperOrigin-RevId: 256299660
Diffstat (limited to 'pkg/seccomp/BUILD')
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