Tim Chen wrote:
> It turned out that VDSO was turned off by CONFIG_PARAVIRT option,
> causing the system call to use inefficient int 0x80 which led to the
> increase system_call time I was seeing. I noted that Ingo has caught
> this problem and proposed a patch to correct this issue in another mail
> thread.
Thanks for identifying this. We'll be posting a more general fix for
COMPAT_VDSO soon which will address this.
J
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