| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAJZ5v0jO9+jRSm3d58K15JaO3=kgM2Ueo7W+Smi3WCBPR_VM5Q@mail.gmail.com>
Date: Wed, 6 Jul 2022 15:51:09 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: rth@...ddle.net, ink@...assic.park.msu.ru, mattst88@...il.com,
vgupta@...nel.org,
Russell King - ARM Linux <linux@...linux.org.uk>,
ulli.kroll@...glemail.com,
Linus Walleij <linus.walleij@...aro.org>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Sascha Hauer <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
dl-linux-imx <linux-imx@....com>,
Tony Lindgren <tony@...mide.com>,
Kevin Hilman <khilman@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>,
bcain@...cinc.com, Huacai Chen <chenhuacai@...nel.org>,
kernel@...0n.name, Geert Uytterhoeven <geert@...ux-m68k.org>,
sammy@...my.net, Michal Simek <monstr@...str.eu>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
dinguyen@...nel.org, jonas@...thpole.se,
stefan.kristiansson@...nalahti.fi,
Stafford Horne <shorne@...il.com>,
James Bottomley <James.Bottomley@...senpartnership.com>,
Helge Deller <deller@....de>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Rich Felker <dalias@...c.org>,
David Miller <davem@...emloft.net>,
Richard Weinberger <richard@....at>,
anton.ivanov@...bridgegreys.com,
Johannes Berg <johannes@...solutions.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
"the arch/x86 maintainers" <x86@...nel.org>,
"H. Peter Anvin" <hpa@...or.com>, acme@...nel.org,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
jolsa@...nel.org, namhyung@...nel.org,
Juergen Gross <jgross@...e.com>, srivatsa@...il.mit.edu,
amakhalov@...are.com, pv-drivers@...are.com,
Boris Ostrovsky <boris.ostrovsky@...cle.com>,
Chris Zankel <chris@...kel.net>, jcmvbkbc@...il.com,
"Rafael J. Wysocki" <rafael@...nel.org>,
Len Brown <lenb@...nel.org>, Pavel Machek <pavel@....cz>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Sudeep Holla <sudeep.holla@....com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Anup Patel <anup@...infault.org>,
Thierry Reding <thierry.reding@...il.com>,
Jon Hunter <jonathanh@...dia.com>,
Jacob Pan <jacob.jun.pan@...ux.intel.com>,
Arnd Bergmann <arnd@...db.de>,
Yury Norov <yury.norov@...il.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Steven Rostedt <rostedt@...dmis.org>,
Petr Mladek <pmladek@...e.com>, senozhatsky@...omium.org,
John Ogness <john.ogness@...utronix.de>,
"Paul E. McKenney" <paulmck@...nel.org>,
Frederic Weisbecker <frederic@...nel.org>,
quic_neeraju@...cinc.com, Josh Triplett <josh@...htriplett.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Lai Jiangshan <jiangshanlai@...il.com>,
Joel Fernandes <joel@...lfernandes.org>,
Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Benjamin Segall <bsegall@...gle.com>,
Mel Gorman <mgorman@...e.de>,
Daniel Bristot de Oliveira <bristot@...hat.com>,
vschneid@...hat.com, jpoimboe@...nel.org,
linux-alpha@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-snps-arc@...ts.infradead.org,
Linux ARM <linux-arm-kernel@...ts.infradead.org>,
Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
linux-ia64@...r.kernel.org,
linux-m68k <linux-m68k@...ts.linux-m68k.org>,
"open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
openrisc@...ts.librecores.org,
Parisc List <linux-parisc@...r.kernel.org>,
linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
linux-riscv <linux-riscv@...ts.infradead.org>,
linux-s390@...r.kernel.org,
Linux-sh list <linux-sh@...r.kernel.org>,
sparclinux@...r.kernel.org, linux-um@...ts.infradead.org,
linux-perf-users@...r.kernel.org,
virtualization@...ts.linux-foundation.org,
xen-devel@...ts.xenproject.org, linux-xtensa@...ux-xtensa.org,
ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
Linux PM <linux-pm@...r.kernel.org>,
linux-clk <linux-clk@...r.kernel.org>,
linux-arm-msm <linux-arm-msm@...r.kernel.org>,
linux-tegra <linux-tegra@...r.kernel.org>,
linux-arch <linux-arch@...r.kernel.org>, rcu@...r.kernel.org
Subject: Re: [PATCH 03/36] cpuidle/poll: Ensure IRQ state is invariant
On Wed, Jun 8, 2022 at 4:47 PM Peter Zijlstra <peterz@...radead.org> wrote:
>
> cpuidle_state::enter() methods should be IRQ invariant
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
> drivers/cpuidle/poll_state.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> --- a/drivers/cpuidle/poll_state.c
> +++ b/drivers/cpuidle/poll_state.c
> @@ -17,7 +17,7 @@ static int __cpuidle poll_idle(struct cp
>
> dev->poll_time_limit = false;
>
> - local_irq_enable();
> + raw_local_irq_enable();
> if (!current_set_polling_and_test()) {
> unsigned int loop_count = 0;
> u64 limit;
> @@ -36,6 +36,8 @@ static int __cpuidle poll_idle(struct cp
> }
> }
> }
> + raw_local_irq_disable();
> +
> current_clr_polling();
>
> return index;
>
>
Powered by blists - more mailing lists