Re: [PATCH v4 bpf 0/4] vmalloc: bpf: introduce VM_ALLOW_HUGE_VMAP

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Apr 19, 2022 at 7:03 PM Alexei Starovoitov
<alexei.starovoitov@xxxxxxxxx> wrote:
>
> Here is the quote from Song's cover letter for bpf_prog_pack series:

I care about performance as much as the next person, but I care about
correctness too.

That large-page code was a disaster, and was buggy and broken.

And even with those four patches, it's still broken.

End result: there's no way that thigh gets re-enabled without the
correctness being in place.

At a minimum, to re-enable it, it needs (a) that zeroing and (b)
actual numbers on real loads. (not some artificial benchmark).

Because without (a) there's no way in hell I'll enable it.

And without (b), "performance" isn't actually an argument.

                  Linus




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux