Messages in this thread | | | From | Vineet Gupta <> | Subject | 4.2+ stable inclusion request: ARCv2: save r30 on kernel entry as gcc uses it for code-gen | Date | Fri, 28 Apr 2017 11:57:36 -0700 |
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Hi,
Can we please backport upstream ecd43afdbe72017aefe48080631eb625e177ef4d ("ARCv2: save r30 on kernel entry as gcc uses it for code-gen") to 4.2 to 4.9 kernels.
While the issue cites gcc, it is general deficiency of kernel as userspace programs can modify r30 register in hand/inline assembly and those will not be preserved without this change.
Thx, -Vineet
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