From mboxrd@z Thu Jan 1 00:00:00 1970 From: pawelo@king.net.pl (Paul Osmialowski) Date: Wed, 24 Jun 2015 06:22:42 +0200 (CEST) Subject: [PATCH 1/9] arm: select different compiler flags for ARM CortexM3 In-Reply-To: <20150623214818.GF7557@n2100.arm.linux.org.uk> References: <1435094387-20146-1-git-send-email-pawelo@king.net.pl> <1435094387-20146-2-git-send-email-pawelo@king.net.pl> <20150623214818.GF7557@n2100.arm.linux.org.uk> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Russell, Thanks for the input. Seems like I trusted get_maintainer.pl blindly and wasn't selective - it resulted in recipient list much too long. As for this patch, I think I went too far with adding it. The board boots without it properly, and since it covers more general Cortex-M related problems I guess it should be excluded from next iteration of the whole patchset. The problems it adresses may still required further discussion, but I think it should not block the whole thing. On Tue, 23 Jun 2015, Russell King - ARM Linux wrote: > On Tue, Jun 23, 2015 at 11:19:39PM +0200, Paul Osmialowski wrote: >> This one is inspired by two commits published on Emcraft git repo: >> >> https://github.com/EmcraftSystems/linux-emcraft.git >> >> 1) 6302b692f570ff9d5645a6e72c11f87b0c1aa409 >> RT #62654. Fixed kernel crashes while running httpd by enabling >> "-mfix-cortex-m3-ldrd" compiler option, which prevents compiler from >> generating code like 'ldrd Ra, Rb, [Ra, #Imm]' - according to the 602117 >> Cortex-M3 Errata it may result in incorrect base register when interrupted >> or faulted. >> >> by: Yuri Tikhonov >> >> 2) 359d3cda84c01c0f3fae1a519b97a31f318f57ab >> RT #62654. Removed "--march=..." leaving only "-mcpu=cortex-m3" to make >> sure only the correct instructions will be generated. >> >> by: Sergei Poselenov >> >> I reworked these patches to make them less intrusive. >> >> Signed-off-by: Paul Osmialowski > > NAK. > > The EFM32 code already added core support for Cortex-M3 cores, under > the symbol CPU_V7M. Rather than implementing a whole new set of > Cortex-M3 support alongside the existing code, please work with the > EFM32 maintainer (Uwe Kleine-K?nig) to come up with a common set of > core changes that you can all agree on for Cortex-M3. > > Please also try to be a little smarter with whom you're sending your > patches to, the Cc list looks to be excessively long - having soo many > recipients on your message is a good way to get your message rejected > by mailing lists as spam. > > -- > FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up > according to speedtest.net. >