linux-kernel - Re: [PATCH v4 bpf 0/4] vmalloc: bpf: introduce VM_ALLOW_HUGE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YlpPW9SdCbZnLVog@infradead.org>
Date:   Fri, 15 Apr 2022 22:08:43 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     Song Liu <song@...nel.org>, bpf@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org, ast@...nel.org,
        daniel@...earbox.net, kernel-team@...com,
        akpm@...ux-foundation.org, rick.p.edgecombe@...el.com,
        hch@...radead.org, imbrenda@...ux.ibm.com
Subject: Re: [PATCH v4 bpf 0/4] vmalloc: bpf: introduce VM_ALLOW_HUGE_VMAP

On Fri, Apr 15, 2022 at 12:05:42PM -0700, Luis Chamberlain wrote:
> Looks good except for that I think this should just wait for v5.19. The
> fixes are so large I can't see why this needs to be rushed in other than
> the first assumptions of the optimizations had some flaws addressed here.

Patches 1 and 2 are bug fixes for regressions caused by using huge page
backed vmalloc by default.  So I think we do need it for 5.18.  The
other two do look like candidates for 5.19, though.