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Re: X86-64 vsyscall is removed from Linux kernel 3.1.
On Wed, Aug 24, 2011 at 10:53, H.J. Lu <hjl.tools@gmail.com> wrote:
> X86-64 vsyscall has been removed from Linux kernel 3.1 and
> has been emulated with syscall instruction. ÂSo for kernel 3.1
> and above, vsyscall is slower than direct syscall instruction.
> I think glibc should try vdso first and fall back to direct syscall
> instruction.
That's already done. Where do you think there is a problem?