From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/5] arm: Enable IRQs before attempting to read user space in __und_usr
Date: Tue, 1 Apr 2014 15:48:16 +0100 [thread overview]
Message-ID: <20140401144815.GA7528@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CAKZGPAP=9wvUd-oSEYKwBz6LKX6vXcRuiRVUpg2k47ui-=YgQw@mail.gmail.com>
On Tue, Apr 01, 2014 at 05:54:15PM +0530, Arun KS wrote:
> As the data abort is now handled in normal way, can we remove the
> fixup handler for ldrt?
No, because all instructions which access userspace, and therefore may
fault, must be given a fixup handler so the kernel knows what to do
should it not be able to supply the page.
Omitting that marking means the only other option in that case is for
the kernel to oops.
--
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
next prev parent reply other threads:[~2014-04-01 14:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-13 18:15 [PATCH 0/5] arm: Early IRQ enabling in the Undef user handler Catalin Marinas
2014-03-13 18:15 ` [PATCH 1/5] arm: Move asm macro get_thread_info to asm/assembler.h Catalin Marinas
2014-03-13 18:15 ` [PATCH 2/5] arm: Add {inc,dec}_preempt_count asm macros Catalin Marinas
2014-03-13 18:15 ` [PATCH 3/5] arm: Disable preemption in iwmmxt_task_enable() Catalin Marinas
2014-04-10 9:14 ` Russell King - ARM Linux
2014-03-13 18:15 ` [PATCH 4/5] arm: Disable preemption in crunch_task_enable() Catalin Marinas
2014-04-10 9:14 ` Russell King - ARM Linux
2014-03-13 18:15 ` [PATCH 5/5] arm: Enable IRQs before attempting to read user space in __und_usr Catalin Marinas
2014-04-01 12:24 ` Arun KS
2014-04-01 14:48 ` Russell King - ARM Linux [this message]
2014-04-04 11:29 ` Arun KS
2014-04-04 15:42 ` Catalin Marinas
2014-04-01 12:03 ` [PATCH 0/5] arm: Early IRQ enabling in the Undef user handler Arun KS
2014-04-01 15:41 ` Catalin Marinas
2014-04-02 4:03 ` Arun KS
-- strict thread matches above, loose matches on Subject: below --
2013-08-28 11:34 Catalin Marinas
2013-08-28 11:34 ` [PATCH 5/5] arm: Enable IRQs before attempting to read user space in __und_usr Catalin Marinas
2013-11-21 9:35 ` Alexey Ignatov
2013-11-21 10:29 ` Russell King - ARM Linux
2013-11-22 9:47 ` Alexey Ignatov
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