On Tue, 28 May 2019 at 10:29, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> 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) might suffer from random SIGILL failures.
>
> Similar workaround already exists for ARM64 architecture. I has been
> added by commit 116c81f427ff ("arm64: Work around systems with mismatched
> cache line sizes").
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> This workaround is needed on all supported Exynos big.LITTLE SoCs: 5420,
> 5422 and 5800.
>
> Resend reason: removed RFC tag as there are no comments, I will upload
> this patch to the patch tracking system
Acked-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Best regards,
Krzysztof
