Re: [PATCH] ARM: Add workaround for I-Cache line size mismatch between CPU cores

2019-05-29 Thread Krzysztof Kozlowski
On Tue, 28 May 2019 at 10:29, Marek Szyprowski wrote: > > Some big.LITTLE systems have I-Cache line size mismatch between > LITTLE and big cores. This patch adds a workaround for proper I-Cache > support on such systems. Without it, some class of the userspace code > (typically self-modifying) mig

[PATCH] ARM: Add workaround for I-Cache line size mismatch between CPU cores

2019-05-28 Thread Marek Szyprowski
Some big.LITTLE systems have I-Cache line size mismatch between LITTLE and big cores. This patch adds a workaround for proper I-Cache support on such systems. Without it, some class of the userspace code (typically self-modifying) might suffer from random SIGILL failures. Similar workaround alread