mirror of https://gitee.com/openkylin/linux.git
b64f87c16f
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> |
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| 8260_io | ||
| boot | ||
| configs | ||
| kernel | ||
| lib | ||
| mm | ||
| platforms | ||
| syslib | ||
| xmon | ||
| .gitignore | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||