linux-kernel - [PATCH for 4.18 0/3] rseq: minor fixes, cleanup

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Date:   Tue, 19 Jun 2018 09:32:27 -0400
From:   Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Andy Lutomirski <luto@...capital.net>,
        Dave Watson <davejwatson@...com>, Paul Turner <pjt@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Russell King <linux@....linux.org.uk>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Andi Kleen <andi@...stfloor.org>, Chris Lameter <cl@...ux.com>,
        Ben Maurer <bmaurer@...com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Josh Triplett <josh@...htriplett.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Michael Kerrisk <mtk.manpages@...il.com>,
        Joel Fernandes <joelaf@...gle.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Subject: [PATCH for 4.18 0/3] rseq: minor fixes, cleanup

Hi Thomas,

Those are 2 small fixes, and a cleanup to the rseq feature, targeting
4.18.

The first fix takes care of an issue that arose in the integration of
the rseq patchset (executable bit on run_param_test.sh was lost). The
second fix aligns struct rseq_cs on 32 bytes on arm32, following the
rseq.h alignment requirements.

The last patch is a cleanup: given that we have decided that system
calls were not allowed in rseq critical sections, fork/clone cannot
be done in a rseq c.s.. Therefore, there is no need to abort a rseq
critical section within the child on fork of a new process.

Thanks,

Mathieu

Mathieu Desnoyers (3):
  rseq/selftests: run_param_test.sh should be executable
  rseq/selftests: arm: align struct rseq_cs on 32 bytes
  rseq: cleanup: no need to abort rseq c.s. in child on fork

 include/linux/sched.h                          | 5 +----
 tools/testing/selftests/rseq/rseq-arm.h        | 1 +
 tools/testing/selftests/rseq/run_param_test.sh | 0
 3 files changed, 2 insertions(+), 4 deletions(-)
 mode change 100644 => 100755 tools/testing/selftests/rseq/run_param_test.sh

-- 
2.11.0