Hi, On Tue, May 22, 2012 at 4:28 PM, Daniel Hellstrom <daniel@xxxxxxxxxxx> wrote: > On 05/21/2012 06:16 PM, Sam Ravnborg wrote: >> >> On Mon, May 21, 2012 at 04:14:20PM +0200, Daniel Hellstrom wrote: >>> >>> Hello Dave, >>> >>> I am trying to catch up on what has been happening lately with the sparc >>> port. Have the latest patches removed support for SPARC V7 CPUs? >> >> Yes. The sun4c were the only users of v7 so today we tell gcc to generate >> v8 >> code. This imply support for muldiv& friends. >> >> >> > From the sparc Makefile: >> >> KBUILD_CFLAGS += -mcpu=v8 > > > Does this mean that if we change it to mcpu=v7 or mcpu=cypress (or removing > mcpu=v8) the kernel can still be run on a V7 CPU? Or have software routines > for making V8 mul/div operations on a V7 CPU been removed so that V7 CPUs > can't run Linux regardless of compiler option? As I understand it, all support for v7 CPUs, including the mul/div routines has been annihilated. So from 3.5 onwards, Linux required a v8 CPU or newer. Thanks, -- Julian Calaby Email: julian.calaby@xxxxxxxxx Profile: http://www.google.com/profiles/julian.calaby/ .Plan: http://sites.google.com/site/juliancalaby/ -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
