From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org,
linux-rt-devel@lists.linux.dev,
Xie Yuanbin <xieyuanbin1@huawei.com>,
Arnd Bergmann <arnd@arndb.de>,
Linus Walleij <linus.walleij@linaro.org>,
"Yadi.hu" <yadi.hu@windriver.com>
Subject: Re: [PATCH v3 2/5] ARM: mm: fault: Enable interrupts before invoking __do_user_fault()
Date: Tue, 2 Dec 2025 17:05:10 +0100 [thread overview]
Message-ID: <20251202160510.eUVnCuRx@linutronix.de> (raw)
In-Reply-To: <aS8J0WrmmH01L3K1@shell.armlinux.org.uk>
On 2025-12-02 15:46:25 [+0000], Russell King (Oracle) wrote:
> If I apply 9460/1 without 9462/1 first, then it makes the problems
> with the branch predictor hardening worse. I'm not prepared to do that.
>
> However, 9462/1 is tied up in the discussions that are ongoing, and I'm
> not going to short-circuit the still-ongoing discussions that touch
> this area by applying this patch - which would screw up everyone's
> proposals to fix the various many problems that are being discovered in
> the 32-bit ARM fault handling.
>
> This means I can't apply 9462/1 nor 9460/1.
>
> Since 9463/1 likely requires these, I can't apply that one either.
>
> Sorry.
Understood. So you just want to get the other bug fixed first and then
we get back to this if it still remains open.
Please let me know if you need some testing or applied the fix and want
me to rebase these changes on top.
Sebastian
next prev parent reply other threads:[~2025-12-02 16:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-10 14:55 [PATCH v3 0/5] ARM: Remaining PREEMPT_RT bits Sebastian Andrzej Siewior
2025-11-10 14:55 ` [PATCH v3 1/5] ARM: mm: fault: Move harden_branch_predictor() before interrupts are enabled Sebastian Andrzej Siewior
2025-11-10 14:55 ` [PATCH v3 2/5] ARM: mm: fault: Enable interrupts before invoking __do_user_fault() Sebastian Andrzej Siewior
2025-12-02 14:18 ` Sebastian Andrzej Siewior
2025-12-02 15:46 ` Russell King (Oracle)
2025-12-02 16:05 ` Sebastian Andrzej Siewior [this message]
2025-11-10 14:55 ` [PATCH v3 3/5] ARM: Disable jump-label on PREEMPT_RT Sebastian Andrzej Siewior
2025-11-10 14:55 ` [PATCH v3 4/5] ARM: Disable HIGHPTE on PREEMPT_RT kernels Sebastian Andrzej Siewior
2025-11-10 14:55 ` [PATCH v3 5/5] ARM: Allow to enable RT Sebastian Andrzej Siewior
2025-11-11 15:16 ` [PATCH v3 0/5] ARM: Remaining PREEMPT_RT bits Arnd Bergmann
2025-11-11 15:59 ` Sebastian Andrzej Siewior
2025-11-12 2:53 ` Bryan Brattlof
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