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arc=pass ("microsoft.com:s=arcselector9901:i=1") Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=fb.com header.s=facebook header.b=UbKup77J; dmarc=pass (policy=reject) header.from=fb.com; spf=none (imf11.hostedemail.com: domain of "prvs=81887be565=songliubraving@fb.com" has no SPF policy when checking 67.231.145.42) smtp.mailfrom="prvs=81887be565=songliubraving@fb.com"; arc=pass ("microsoft.com:s=arcselector9901:i=1") X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 753194004B X-Stat-Signature: x71q8kn7biaut4jcm81dux38y6ftmkug X-Rspam-User: X-HE-Tag: 1657244239-831187 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: > On Jul 7, 2022, at 5:53 PM, Luis Chamberlain wrote: >=20 > On Thu, Jul 07, 2022 at 11:52:58PM +0000, Song Liu wrote: >>> On Jul 7, 2022, at 3:59 PM, Luis Chamberlain wrote: >>>=20 >>> On Thu, Jul 07, 2022 at 03:35:41PM -0700, Song Liu wrote: >>>> This set is the second half of v4 [1]. >>>>=20 >>>> Changes v5 =3D> v6: >>>> 1. Rebase and extend CC list. >>>=20 >>> Why post a new iteration so soon without completing the discussion we >>> had? It seems like we were at least going somewhere. If it's just >>> to include mm as I requested, sure, that's fine, but this does not >>> provide context as to what we last were talking about. >>=20 >> Sorry for sending v6 too soon. The primary reason was to extend the CC >> list and add it back to patchwork (v5 somehow got archived).=20 >>=20 >> Also, I think vmalloc_exec_ work would be a separate project, while this= =20 >> set is the followup work of bpf_prog_pack. Does this make sense?=20 >>=20 >> Btw, vmalloc_exec_ work could be a good topic for LPC. It will be much >> more efficient to discuss this in person.=20 >=20 > What we need is input from mm / arch folks. What is not done here is > what that stuff we're talking about is and so mm folks can't guess. My > preference is to address that. >=20 > I don't think in person discussion is needed if the only folks > discussing this topic so far is just you and me. How about we start a thread with mm / arch folks for the vmalloc_exec_* topic? I will summarize previous discussions and include pointers to=20 these discussions. If necessary, we can continue the discussion at LPC. OTOH, I guess the outcome of that discussion should not change this set?=20 If we have concern about module_alloc_huge(), maybe we can have bpf code=20 call vmalloc directly (until we have vmalloc_exec_)?=20 What do you think about this plan? Thanks, Song