Markos Chandras 58563817cf MIPS: asm: uaccess: Add v1 register to clobber list on EVA ... When EVA is turned on and prefetching is being used in memcpy.S, the v1 register is being used as a helper register to the PREFE instruction. However, v1 ($3) was not in the clobber list, which means that the compiler did not preserve it across function calls, and that could corrupt the value of the register leading to all sorts of userland crashes. We fix this problem by using the DADDI_SCRATCH macro to define the clobbered register when CONFIG_EVA && CONFIG_CPU_HAS_PREFETCH are enabled. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: <stable@vger.kernel.org> # v3.15+ Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8510/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2014-11-19 18:22:08 +01:00
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asm	MIPS: asm: uaccess: Add v1 register to clobber list on EVA	2014-11-19 18:22:08 +01:00
uapi/asm	MIPS: Wire up bpf syscall.	2014-10-27 03:37:42 +01:00