From: "Andy Lutomirski" <luto@kernel.org>
To: "Ali Raza" <aliraza@bu.edu>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Cc: "Jonathan Corbet" <corbet@lwn.net>,
masahiroy@kernel.org, michal.lkml@markovi.net,
"Nick Desaulniers" <ndesaulniers@google.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Kees Cook" <keescook@chromium.org>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Arnd Bergmann" <arnd@arndb.de>,
juri.lelli@redhat.com, vincent.guittot@linaro.org,
dietmar.eggemann@arm.com, "Steven Rostedt" <rostedt@goodmis.org>,
"Ben Segall" <bsegall@google.com>,
mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com,
"Paolo Bonzini" <pbonzini@redhat.com>,
jpoimboe@kernel.org, linux-doc@vger.kernel.org,
linux-kbuild@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org,
"the arch/x86 maintainers" <x86@kernel.org>,
rjones@redhat.com, munsoner@bu.edu, tommyu@bu.edu,
drepper@redhat.com, lwoodman@redhat.com, mboydmcse@gmail.com,
okrieg@bu.edu, rmancuso@bu.edu
Subject: Re: [RFC UKL 09/10] exec: Give userspace a method for starting UKL process
Date: Tue, 04 Oct 2022 10:35:38 -0700 [thread overview]
Message-ID: <20d483b6-da24-4ddc-b6d4-c0c23b8e5ea2@app.fastmail.com> (raw)
In-Reply-To: <20221003222133.20948-10-aliraza@bu.edu>
On Mon, Oct 3, 2022, at 3:21 PM, Ali Raza wrote:
> From: Eric B Munson <munsoner@bu.edu>
>
> From: Eric B Munson <munsoner@bu.edu>
>
> The UKL process might depend on setup that is to be done by user space
> prior to its initialization. We need a way to let userspace signal that it
> is ready for the UKL process to run. We will have setup a special name for
> this process in the kernel config and if this name is passed to exec that
> will start the UKL process. This way, if user space setup is required we
> can be sure that the process doesn't run until explicitly started.
This is just bizarre IMO. Why is there one single UKL process?
How about having a way to start a UKL process and then, if desired, start *another* UKL process? (And obviously there would be a security mode in which only a UKL process that is actually part of the kernel image can run or that only a UKL process with a hash that's part of the kernel image can run.)
--Andy
next prev parent reply other threads:[~2022-10-04 17:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-03 22:21 [RFC UKL 00/10] Unikernel Linux (UKL) Ali Raza
2022-10-03 22:21 ` [RFC UKL 01/10] kbuild: Add sections and symbols to linker script for UKL support Ali Raza
2022-10-03 22:21 ` [RFC UKL 02/10] x86/boot: Load the PT_TLS segment for Unikernel configs Ali Raza
2022-10-04 17:30 ` Andy Lutomirski
2022-10-06 21:00 ` Ali Raza
2022-10-03 22:21 ` [RFC UKL 03/10] sched: Add task_struct tracking of kernel or application execution Ali Raza
2022-10-03 22:21 ` [RFC UKL 04/10] x86/entry: Create alternate entry path for system calls Ali Raza
2022-10-04 17:43 ` Andy Lutomirski
2022-10-06 21:12 ` Ali Raza
2022-10-03 22:21 ` [RFC UKL 05/10] x86/uaccess: Make access_ok UKL aware Ali Raza
2022-10-04 17:36 ` Andy Lutomirski
2022-10-06 21:16 ` Ali Raza
2022-10-03 22:21 ` [RFC UKL 06/10] x86/fault: Skip checking kernel mode access to user address space for UKL Ali Raza
2022-10-03 22:21 ` [RFC UKL 07/10] x86/signal: Adjust signal handler register values and return frame Ali Raza
2022-10-04 17:34 ` Andy Lutomirski
2022-10-06 21:20 ` Ali Raza
2022-10-03 22:21 ` [RFC UKL 08/10] exec: Make exec path for starting UKL application Ali Raza
2022-10-03 22:21 ` [RFC UKL 09/10] exec: Give userspace a method for starting UKL process Ali Raza
2022-10-04 17:35 ` Andy Lutomirski [this message]
2022-10-06 21:25 ` Ali Raza
2022-10-03 22:21 ` [RFC UKL 10/10] Kconfig: Add config option for enabling and sample for testing UKL Ali Raza
2022-10-04 2:11 ` Bagas Sanjaya
2022-10-06 21:28 ` Ali Raza
2022-10-07 10:21 ` Masahiro Yamada
2022-10-13 17:08 ` Ali Raza
2022-10-06 21:27 ` [RFC UKL 00/10] Unikernel Linux (UKL) H. Peter Anvin
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