From: David Hildenbrand <david@redhat.com>
To: Shakeel Butt <shakeel.butt@linux.dev>,
Andrii Nakryiko <andrii@kernel.org>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
martin.lau@kernel.org, linux-mm@kvack.org,
linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Yi Lai <yi1.lai@intel.com>,
pbonzini@redhat.com, seanjc@google.com, tabba@google.com,
jackmanb@google.com, yosryahmed@google.com, jannh@google.com,
rppt@kernel.org
Subject: Re: [PATCH bpf] lib/buildid: handle memfd_secret() files in build_id_parse()
Date: Thu, 17 Oct 2024 11:17:19 +0200 [thread overview]
Message-ID: <d62bd511-13ac-4030-a4f3-ff81025170c1@redhat.com> (raw)
In-Reply-To: <2rweiiittlxcio6kknwy45wez742mlgjnfdg3tq3xdkmyoq5nn@g7bfoqy4vdwt>
On 16.10.24 20:39, Shakeel Butt wrote:
> Ccing couple more folks who are doing similar work (ASI, guest_memfd)
>
> Folks, what is the generic way to check if a given mapping has folios
> unmapped from kernel address space?
Can't we just lookup the mapping and refuse these folios that really
shouldn't be looked at?
See gup_fast_folio_allowed() where we refuse secretmem_mapping().
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2024-10-17 9:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-14 23:56 Andrii Nakryiko
2024-10-15 0:00 ` Shakeel Butt
2024-10-16 18:39 ` Shakeel Butt
2024-10-16 19:59 ` Yosry Ahmed
2024-10-16 21:45 ` Shakeel Butt
2024-10-17 9:17 ` David Hildenbrand [this message]
2024-10-17 16:22 ` Shakeel Butt
2024-10-17 17:41 ` David Hildenbrand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d62bd511-13ac-4030-a4f3-ff81025170c1@redhat.com \
--to=david@redhat.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=jackmanb@google.com \
--cc=jannh@google.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=martin.lau@kernel.org \
--cc=pbonzini@redhat.com \
--cc=rppt@kernel.org \
--cc=seanjc@google.com \
--cc=shakeel.butt@linux.dev \
--cc=tabba@google.com \
--cc=yi1.lai@intel.com \
--cc=yosryahmed@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox