From: Florian Weimer <fweimer@redhat.com>
To: Ram Pai <linuxram@us.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Linux-MM <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
linux-x86_64@vger.kernel.org,
linux-arch <linux-arch@vger.kernel.org>, X86 ML <x86@kernel.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH] pkeys: Introduce PKEY_ALLOC_SIGNALINHERIT and change signal semantics
Date: Thu, 17 May 2018 12:11:15 +0200 [thread overview]
Message-ID: <9c7b1c17-5c0e-11aa-0803-a0f503087b37@redhat.com> (raw)
In-Reply-To: <20180516203534.GA5479@ram.oc3035372033.ibm.com>
On 05/16/2018 10:35 PM, Ram Pai wrote:
> So let me see if I understand the overall idea.
>
> Application can allocate new keys through a new syscall
> sys_pkey_alloc_1(flags, init_val, sig_init_val)
>
> 'sig_init_val' is the permission-state of the key in signal context.
I would keep the existing system call and just add a flag, say
PKEY_ALLOC_SETSIGNAL. If the current thread needs different access
rights, it can set those rights just after pkey_alloc returns. There is
no race that matters here, I think.
Thanks,
Florian
next prev parent reply other threads:[~2018-05-17 10:11 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-02 13:26 [PATCH] pkeys: Introduce PKEY_ALLOC_SIGNALINHERIT and change signal semantics Florian Weimer
2018-05-02 14:30 ` Dave Hansen
2018-05-02 15:12 ` Florian Weimer
2018-05-02 15:28 ` Dave Hansen
2018-05-02 21:08 ` Florian Weimer
2018-05-02 22:03 ` Dave Hansen
2018-05-07 9:47 ` Florian Weimer
2018-05-02 17:09 ` Andy Lutomirski
2018-05-02 17:17 ` Florian Weimer
2018-05-02 20:41 ` Andy Lutomirski
2018-05-02 21:06 ` Florian Weimer
2018-05-02 21:23 ` Andy Lutomirski
2018-05-02 22:08 ` Dave Hansen
2018-05-02 22:22 ` Andy Lutomirski
2018-05-02 22:32 ` Dave Hansen
2018-05-02 23:32 ` Andy Lutomirski
2018-05-02 23:58 ` Dave Hansen
2018-05-03 1:14 ` Andy Lutomirski
2018-05-03 14:42 ` Dave Hansen
2018-05-03 14:42 ` Florian Weimer
2018-05-03 2:10 ` Ram Pai
2018-05-03 4:05 ` Andy Lutomirski
2018-05-07 9:48 ` Florian Weimer
2018-05-08 2:49 ` Andy Lutomirski
2018-05-08 12:40 ` Florian Weimer
2018-05-09 14:41 ` Andy Lutomirski
2018-05-14 12:01 ` Florian Weimer
2018-05-14 15:32 ` Andy Lutomirski
2018-05-14 15:34 ` Florian Weimer
2018-05-16 17:01 ` Dave Hansen
2018-05-16 20:52 ` Ram Pai
2018-05-16 20:54 ` Andy Lutomirski
2018-05-16 20:35 ` Ram Pai
2018-05-16 20:37 ` Andy Lutomirski
2018-05-16 21:07 ` Ram Pai
2018-05-17 10:09 ` Florian Weimer
2018-05-17 10:11 ` Florian Weimer [this message]
2018-05-03 14:37 ` Florian Weimer
2018-05-02 21:12 ` Ram Pai
2018-05-02 21:18 ` Andy Lutomirski
2018-05-02 23:38 ` Ram Pai
2018-05-07 9:47 ` Florian Weimer
2018-05-07 9:43 ` Florian Weimer
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=9c7b1c17-5c0e-11aa-0803-a0f503087b37@redhat.com \
--to=fweimer@redhat.com \
--cc=dave.hansen@intel.com \
--cc=linux-api@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-x86_64@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=linuxram@us.ibm.com \
--cc=luto@kernel.org \
--cc=x86@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).