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Date: Wed, 12 Feb 2014 10:29:35 +0100 From: Heiko Carstens <heiko.carstens@...ibm.com> To: linux-kernel@...r.kernel.org, linux-390@...marist.edu, linux-s390@...r.kernel.org Cc: Martin Schwidefsky <schwidefsky@...ibm.com> Subject: [ANNOUNCE] s390 31 bit kernel support removal Hi all, we plan to remove 31 bit kernel support of the s390 architecture in the Linux kernel sources. The reason for this is quite simple: the current 31 bit kernel was broken for nearly a year before somebody noticed. Keeping the 31 bit kernel support adds extra maintenance and development effort which we do not want to spend anymore, especially since the effort seems to be quite pointless, since nobody uses (and tests) the 31 bit kernel. Please note, that we will not remove the 31 bit compatibility layer which allows to run 31 bit applications with a 64 bit kernel. It is also possible to run a complete 31 bit user space distribution with a 64 bit kernel. After the removal of the 31 bit kernel support it is not possible to run new Linux kernels on old 31 bit only machines. The only supported 31 bit only machines were the G6 and Multiprise 3000 introduced in 1999. However after nearly 15 years it seems reasonable to remove support for these old machines. We want to remove s390 31 bit kernel support with Linux kernel 3.16. Thanks, Heiko -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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