From: Christoph Hellwig <hch@infradead.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Minchan Kim <minchan@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Christian Brauner <christian.brauner@ubuntu.com>,
linux-mm <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Oleksandr Natalenko <oleksandr@redhat.com>,
Suren Baghdasaryan <surenb@google.com>,
Tim Murray <timmurray@google.com>,
Sandeep Patil <sspatil@google.com>,
Sonny Rao <sonnyrao@google.com>,
Brian Geffon <bgeffon@google.com>, Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Shakeel Butt <shakeelb@google.com>,
John Dias <joaodias@google.com>,
Joel Fernandes <joel@joelfernandes.org>,
Jann Horn <jannh@google.com>,
alexander.h.duyck@linux.intel.com,
SeongJae Park <sj38.park@gmail.com>,
David Rientjes <rientjes@google.com>,
Arjun Roy <arjunroy@google.com>, Vlastimil Babka <vbabka@suse.cz>,
Christian Brauner <christian@brauner.io>,
Daniel Colascione <dancol@google.com>,
Jens Axboe <axboe@kernel.dk>, Kirill Tkhai <ktkhai@virtuozzo.com>,
SeongJae Park <sjpark@amazon.de>,
linux-man <linux-man@vger.kernel.org>
Subject: Re: [PATCH v8 3/4] mm/madvise: introduce process_madvise() syscall: an external memory hinting API
Date: Sat, 29 Aug 2020 08:02:30 +0100 [thread overview]
Message-ID: <20200829070230.GA1099@infradead.org> (raw)
In-Reply-To: <CAK8P3a0Mnp2ekmX-BX9yr+N8fy2=gBtASELLXoa9uGSpSS9aOA@mail.gmail.com>
On Fri, Aug 28, 2020 at 07:40:08PM +0200, Arnd Bergmann wrote:
> Every syscall that passes an iovec seems to do this. If we make import_iovec()
> handle both cases directly, this syscall and a number of others can
> be simplified, and you avoid the x32 entry point I mentioned above
FYI, I do have a series that does this (even tested) and kills tons of
compat syscalls by that. But by doing that I found the problem that
compat syscalls issued by io_uring don't trigger in_compat_syscall().
I need to go back to fixing the io_uring vs in_compat_syscall() issue
(probably for 5.9) and then submit the whole thing.
next prev parent reply other threads:[~2020-08-29 7:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200622192900.22757-1-minchan@kernel.org>
2020-06-22 19:28 ` [PATCH v8 1/4] mm/madvise: pass task and mm to do_madvise Minchan Kim
2020-06-24 20:00 ` David Rientjes
2020-06-22 19:28 ` [PATCH v8 2/4] pid: move pidfd_get_pid() to pid.c Minchan Kim
2020-06-24 20:00 ` David Rientjes
2020-06-22 19:28 ` [PATCH v8 3/4] mm/madvise: introduce process_madvise() syscall: an external memory hinting API Minchan Kim
2020-06-24 20:00 ` David Rientjes
2020-06-25 20:38 ` Minchan Kim
2020-08-28 17:40 ` Arnd Bergmann
2020-08-28 18:24 ` Jens Axboe
2020-08-28 18:25 ` Christian Brauner
2020-08-28 19:04 ` Minchan Kim
2020-08-28 19:26 ` Jens Axboe
2020-08-28 20:15 ` Arnd Bergmann
2020-08-29 7:02 ` Christoph Hellwig [this message]
2020-06-22 19:29 ` [PATCH v8 4/4] mm/madvise: check fatal signal pending of target process Minchan Kim
2020-06-24 20:00 ` David Rientjes
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