Date: Fri, 12 Jun 2020 19:03:06 +0200 From: Mikhail Morfikov <mmorfikov@...il.com> To: lkrg-users@...ts.openwall.com Subject: Re: RE: ISRA optimized functions On 12/06/2020 16:07, Adam Zabrocki wrote: > As you can see, even CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is configured, so this > is "lowlatency" kernel, and CONSTPROP optimization is enforced in various > places (590 funtions was optimized using this method), function "lookup_fast" > is not touched. This is Ubuntu 20.xx kernel package. > The main reason why you have that problem is unusual and specific kernel > configuration which allows for such optimization. But the kernel config I have is the same I had with gcc9 -- nothing has changed here, and in the case of gcc9 I also have lookup_fast without the constprop, which I already mentioned. So something has changed in gcc10 itself, and I don't know what that would be. Maybe you could try building a kernel with gcc10 and check whether you also have this issue? In this way we could confirm that there's a problem with gcc10. Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)
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