Becky Bruce b64f87c16f [POWERPC] Avoid unpaired stwcx. on some processors ... The context switch code in the kernel issues a dummy stwcx. to clear the reservation, as recommended by the architecture. However, some processors can have issues if this stwcx to address A occurs while the reservation is already held to a different address B. To avoid this problem, the dummy stwcx. needs to be paired with a dummy lwarx to the same address. This adds the dummy lwarx, and creates a cpu feature bit to indicate which cpus are affected. Tested on mpc8641_hpcn_defconfig in arch/powerpc; build tested in arch/ppc. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>		2007-11-13 16:22:43 +11:00
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4xx_io	[POWERPC] Spelling fixes: arch/ppc/	2007-05-12 11:32:49 +10:00
8xx_io	[PPC] Fix cpm_dpram_addr returning phys mem instead of virt mem	2007-09-28 10:25:32 -05:00
8260_io	[NET]: Kill eth_copy_and_sum().	2007-07-10 22:08:12 -07:00
boot	kbuild: restore arch/{ppc/xtensa}/boot cflags	2007-10-20 20:35:23 +02:00
configs	[POWERPC] Remove APUS support from arch/ppc	2007-09-17 15:15:04 +10:00
kernel	[POWERPC] Avoid unpaired stwcx. on some processors	2007-11-13 16:22:43 +11:00
lib	[POWERPC] User rheap from arch/powerpc/lib	2007-05-09 23:28:17 -05:00
mm	[POWERPC] ppc405 Fix arithmatic rollover bug when memory size under 16M	2007-11-01 07:15:59 -05:00
platforms	[POWERPC] 4xx: Fix 4xx flush_tlb_page()	2007-11-01 07:15:09 -05:00
syslib	[POWERPC] i8259: Add disable method	2007-11-08 14:15:29 +11:00
xmon	[POWERPC] PPC: Use ARRAY_SIZE macro when appropriate	2007-02-08 16:08:25 +11:00
.gitignore	[POWERPC] Only ignore arch/ppc/include, not arch/ppc/boot/include	2007-08-17 11:01:51 +10:00
Kconfig	Combine instrumentation menus in kernel/Kconfig.instrumentation	2007-10-19 11:53:54 -07:00
Kconfig.debug	ppc: Remove CHRP, POWER3 and POWER4 support from arch/ppc	2006-03-28 10:22:10 +11:00
Makefile	kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP	2007-10-15 22:17:25 +02:00