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
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kernel	[POWERPC] Avoid unpaired stwcx. on some processors	2007-11-13 16:22:43 +11:00
lib
mm
platforms
syslib	[POWERPC] i8259: Add disable method	2007-11-08 14:15:29 +11:00
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