From: "Zheng, Lv" <lv.zheng@intel.com>
To: Borislav Petkov <bp@alien8.de>, "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"stan.kain@gmail.com" <stan.kain@gmail.com>,
"waffolz@hotmail.com" <waffolz@hotmail.com>,
Josh Triplett <josh@joshtriplett.org>,
Steven Rostedt <rostedt@goodmis.org>,
"mathieu.desnoyers@efficios.com" <mathieu.desnoyers@efficios.com>,
"jiangshanlai@gmail.com" <jiangshanlai@gmail.com>,
Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: RE: [PATCH] rcu: Narrow early boot window of illegal synchronous grace periods
Date: Mon, 16 Jan 2017 01:57:25 +0000 [thread overview]
Message-ID: <1AE640813FDE7649BE1B193DEA596E886CE2BD4E@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <20170114125017.5wp2khn5scezeuau@pd.tnic>
Hi,
> From: Borislav Petkov [mailto:bp@alien8.de]
> Subject: Re: [PATCH] rcu: Narrow early boot window of illegal synchronous grace periods
>
> On Sat, Jan 14, 2017 at 01:27:40PM +0100, Rafael J. Wysocki wrote:
> > OK, so this fixes the problem with synchronize_rcu_expedited() in
> > acpi_os_map_cleanup(), right?
>
> Yeah.
>
> > I wonder if the ACPI-specific fix is still needed, then?
>
> It is not strictly necessary. If you still think it would be better to
> have it regardless, you could pick it up. I.e., making ACPI more robust,
> yadda yadda.
>
> I dunno, though, perhaps it is only complicating the code unnecessarily
> and then can be safely ignored with a mental note for future freezes.
Glad to see it fixed inside of the API provider.
IMO, ACPI fix is unnecessary as ACPI is just a user of the RCU APIs.
And it's pointless to add special checks in the user side in order to use one of them.
Thanks and best regards
Lv
>
> --
> Regards/Gruss,
> Boris.
>
> Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2017-01-16 1:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-13 2:38 [PATCH] rcu: Narrow early boot window of illegal synchronous grace periods Paul E. McKenney
2017-01-13 11:25 ` Borislav Petkov
2017-01-14 8:00 ` Paul E. McKenney
2017-01-14 10:35 ` Borislav Petkov
2017-01-14 12:27 ` Rafael J. Wysocki
2017-01-14 12:50 ` Borislav Petkov
2017-01-16 1:57 ` Zheng, Lv [this message]
2017-01-16 4:56 ` Paul E. McKenney
2017-01-15 5:24 ` Paul E. McKenney
2017-01-15 10:09 ` Borislav Petkov
2017-01-15 20:33 ` Paul E. McKenney
2017-01-13 17:02 ` Borislav Petkov
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=1AE640813FDE7649BE1B193DEA596E886CE2BD4E@SHSMSX101.ccr.corp.intel.com \
--to=lv.zheng@intel.com \
--cc=bp@alien8.de \
--cc=jiangshanlai@gmail.com \
--cc=josh@joshtriplett.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=mingo@kernel.org \
--cc=paulmck@linux.vnet.ibm.com \
--cc=rafael@kernel.org \
--cc=rostedt@goodmis.org \
--cc=stan.kain@gmail.com \
--cc=torvalds@linux-foundation.org \
--cc=waffolz@hotmail.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.