unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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kernel-hacking-2024-linux-s.../arch/arm
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Nicolas Pitre 49bca4c281 [ARM] 3309/1: disable the pre-ARMv5 NPTL kernel helper in the non MMU case 
Patch from Nicolas Pitre

The cmpxchg emulation on pre-ARMv5 relies on user code executed from a
kernel address.  If the operation cannot complete atomically, it is
aborted from the usr_entry macro by clearing the Z flag.  This clearing
of the Z flag is done whenever the user pc is above TASK_SIZE.

However this "pc >= TASK_SIZE" test cannot work in the non MMU case.
Worse: the current code will corrupt the Z flag on every entry to the
kernel.

Let's disable it in the non MMU case for now.  Using NPTL on non MMU
targets needs to be worked out anyway.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-08 21:19:37 +00:00
..
boot [ARM] 3272/1: fix kernel decompressor crash 2006-01-18 22:38:51 +00:00
common Merge master.kernel.org:/home/rmk/linux-2.6-arm 2006-01-14 19:43:21 -08:00
configs [ARM] 3306/1: S3C24XX - update defconfig 2006-02-08 21:09:07 +00:00
kernel [ARM] 3309/1: disable the pre-ARMv5 NPTL kernel helper in the non MMU case 2006-02-08 21:19:37 +00:00
lib [ARM] 3104/1: ARM EABI: new helper function names 2006-01-14 16:18:29 +00:00
mach-aaec2000 [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-at91rm9200 [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-clps711x [ARM] 3304/1: Add help descriptions to ARCH config items that don't have one 2006-02-08 21:09:05 +00:00
mach-clps7500 [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-ebsa110 [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-footbridge [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-h720x [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-imx [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-integrator [ARM] 3289/1: Enable the LCD support for Integrator/CP 2006-01-28 20:54:50 +00:00
mach-iop3xx [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-ixp4xx [ARM] 3281/1: ixp4xx: export ixp4xx_exp_bus_size for modules 2006-01-18 22:46:43 +00:00
mach-ixp2000 [ARM] 3302/1: make pci=firmware the default for ixp2000 2006-02-08 21:09:04 +00:00
mach-l7200 [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-lh7a40x [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-omap1 ARM: OMAP: 4/4 Fix clock framework to use clk_enable/disable misc 2006-01-17 15:33:51 -08:00
mach-omap2 ARM: OMAP: 4/4 Fix clock framework to use clk_enable/disable misc 2006-01-17 15:33:51 -08:00
mach-pxa [ARM] 3291/1: PXA27x: Correct get_clk_frequency_khz turbo flag handling 2006-02-01 19:25:59 +00:00
mach-realview [ARM] Remove useless 'default n' from Kconfig files 2006-01-13 21:09:17 +00:00
mach-rpc [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-s3c2410 [ARM] 3303/1: S3C24XX - add clock enable usage counting 2006-02-08 21:09:05 +00:00
mach-sa1100 [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-shark [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
mach-versatile [ARM] Separate VIC (vectored interrupt controller) support from Versatile 2006-01-13 21:30:48 +00:00
mm [ARM] 3294/1: don't invalidate individual BTB entries on ARMv6 2006-02-01 19:26:01 +00:00
nwfpe [ARM] 3111/2: old ABI compat: adjust NWFPE to be operational within an EABI kernel 2006-01-14 16:36:50 +00:00
oprofile [ARM] 3295/1: Fix oprofile init return value 2006-02-01 21:07:28 +00:00
plat-omap ARM: OMAP: 4/4 Fix clock framework to use clk_enable/disable misc 2006-01-17 15:33:51 -08:00
tools
vfp
Kconfig [ARM] Experimental config options should have (EXPERIMENTAL) 2006-02-08 21:09:55 +00:00
Kconfig.debug
Makefile [ARM] 3107/3: ARM EABI: last bits to configure it 2006-01-14 16:33:50 +00:00