Re: [PATCH 7/7] s390/vdso: Wire up getrandom() vdso implementation

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On Fri, Sep 13, 2024 at 03:53:43PM +0200, Jason A. Donenfeld wrote:
> On Fri, Sep 13, 2024 at 03:05:43PM +0200, Heiko Carstens wrote:
> > The vdso testcases vdso_test_getrandom and vdso_test_chacha pass.
> 
> I'd be curious to see the results of ./vdso_test_getrandom bench-single
> and such.

It looks like this with two layers of hypervisors in between, but that
shouldn't matter too much for this type of workload:

$ ./vdso_test_getrandom bench-single
   vdso: 25000000 times in 0.493703559 seconds
   libc: 25000000 times in 6.371764073 seconds
syscall: 25000000 times in 6.584025337 seconds




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