linux

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History

Catalin Marinas 1417a6b8dc ARM: 8036/1: Enable IRQs before attempting to read user space in __und_usr

The Undef abort handler in the kernel reads the undefined instruction
from user space. If the page table was modified from another CPU, the
user access could fail and do_page_fault() will be executed with
interrupts disabled. This can potentially deadlock on ARM11MPCore or on
Cortex-A15 with erratum 798181 workaround enabled (both implying IPI for
TLB maintenance with page table lock held).

This patch enables the IRQs in __und_usr before attempting to read the
instruction from user space.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Arun KS <getarunks@gmail.com>
Cc: Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2014-04-25 12:06:38 +01:00

include/mach

This cleanup series gets rid of <mach/timex.h> for platforms not using

2014-02-18 22:19:33 -08:00

adssphere.c

Initial irqchip init infrastructure and GIC and VIC clean-ups

2013-01-14 19:55:03 -08:00

clock.c

usb: ohci: remove ep93xx bus glue platform driver

2013-10-29 16:43:37 -07:00

core.c

ARM: SoC: cleanups for 3.15