From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Urja <urja@urja.dev>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Linus Walleij <linus.walleij@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Kees Cook <keescook@chromium.org>
Subject: Re: Userspace programs segfaulting since CONFIG_ARM_PAN was introduced for LPAE
Date: Mon, 29 Jul 2024 09:51:15 +0100 [thread overview]
Message-ID: <ZqdYA+43xVitaAWL@shell.armlinux.org.uk> (raw)
In-Reply-To: <PmbX6S6Osc50o8nCGiyOtYWlewq2QKXVo69V_1hkK0WeFxprG387m1JY619uKGK0Kynb7Jdb7plnUWfzKgV0UP9L7RIA4E2KnupKhIr5aYQ=@urja.dev>
On Fri, Jul 19, 2024 at 11:09:23AM +0000, Urja wrote:
> Hi,
>
> Trying to start KDE Plasma (startplasma-wayland) on my ASUS C201 (RK3288) with any kernel since "ARM: 9358/2: Implement PAN for LPAE by TTBR0 page table walks disablement"* and CONFIG_ARM_PAN=y (enabled by default for an LPAE kernel in that commit) causes a segfault.
This is a known bug. Make sure you have this applied:
eebadafc3b14 ("ARM: 9398/1: Fix userspace enter on LPAE with CC_OPTIMIZE_FOR_SIZE=y")
Thanks.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
prev parent reply other threads:[~2024-07-29 8:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-19 11:09 Userspace programs segfaulting since CONFIG_ARM_PAN was introduced for LPAE Urja
2024-07-29 8:51 ` Russell King (Oracle) [this message]
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=ZqdYA+43xVitaAWL@shell.armlinux.org.uk \
--to=linux@armlinux.org.uk \
--cc=catalin.marinas@arm.com \
--cc=keescook@chromium.org \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=urja@urja.dev \
/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.