From: jgunthorpe@obsidianresearch.com (Jason Gunthorpe)
To: linux-security-module@vger.kernel.org
Subject: [PATCH v2] tpm: use struct tpm_chip for tpm_chip_find_get()
Date: Wed, 25 Oct 2017 14:17:44 -0600 [thread overview]
Message-ID: <20171025201744.GB2815@obsidianresearch.com> (raw)
In-Reply-To: <20171025200746.svsraubdotjyzt2i@linux.intel.com>
On Wed, Oct 25, 2017 at 10:07:46PM +0200, Jarkko Sakkinen wrote:
> The id has a nice feature that it is unique for one boot cycle you can
> even try to get a chip that has been deleted. It has the most stable
> properties in the long run.
It isn't unique, we can re-use ids them via idr_alloc(). We should
never use index inside the kernel.
> Address is a reusable identifier in one boot cycle.
It is invalid to pass in a chip for which the caller does not hold a
kref, so address is the safest argument.
Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
the body of a message to majordomo at vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-10-25 20:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-25 11:55 [PATCH v2] tpm: use struct tpm_chip for tpm_chip_find_get() Jarkko Sakkinen
2017-10-25 15:10 ` PrasannaKumar Muralidharan
2017-10-25 19:34 ` Jarkko Sakkinen
2017-10-25 19:46 ` Jason Gunthorpe
2017-10-25 20:07 ` Jarkko Sakkinen
2017-10-25 20:17 ` Jason Gunthorpe [this message]
2017-10-26 10:54 ` Jarkko Sakkinen
2017-10-25 15:22 ` Jason Gunthorpe
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=20171025201744.GB2815@obsidianresearch.com \
--to=jgunthorpe@obsidianresearch.com \
--cc=linux-security-module@vger.kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).