Date: Sun, 19 Jan 2020 19:51:58 +0530 From: Shivank Garg <shivank@freebsd.org> To: "Greg 'groggy' Lehey" <grog@freebsd.org> Cc: freebsd-arch@freebsd.org Subject: Re: Porting FreeBSD to Z mainframes idea Message-ID: <CAOVCmzGG7dUovT1989nnTSb-F_e6sR_-tP3=xLePv-roC2mFiA@mail.gmail.com> In-Reply-To: <20200118222619.GD67053@eureka.lemis.com> References: <CAOVCmzHsDxvENdRNwDjjRDMU89dbxaA3Wn=4K6n3Ne%2BeJPmWyA@mail.gmail.com> <20200118222619.GD67053@eureka.lemis.com>
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Hi, On Sun, Jan 19, 2020, 3:56 AM Greg 'groggy' Lehey <grog@freebsd.org> wrote: > On Saturday, 18 January 2020 at 12:43:02 +0530, Shivank Garg wrote: > > Hi! > > I wish to pursue this idea of porting FreeBSD to IBM Z mainframes. > > Currently, there are no BSD derivatives for Z mainframes, and I find the > > idea of porting FreeBSD to Z mainframe. > > > > Someone on IRC suggested to port NetBSD first, as it is easier to port on > > different hardware platforms. > > Agreed, at least at first sight. Have you discussed this on the > NetBSD lists? > No. I haven't discussed this with them yet. > > > There is a sponsored internship program called OpenMainFrame > > Mentorship. So, I thought to propose this project in this > > program. But I'm a beginner and have very little idea about the > > whole porting process and challenges faced during it. I will be > > very thankful if you can give suggestions about this, and how much > > time will it take for a beginner? The mentorship program is for a > > span of 3-4 months. > > Is success in that time an important requirement? You may find it > too complicated for the time frame. Help from somebody who has ported > to a different platform would probably help. In the specific case of > the Z series, you may have significant architectural issues to contend > with: the Z series evolved from the 360/370, which didn't even have > stacks. I don't know how different the Z series is, but it would be > good to find out before you start. > I'll ask for help with the architecture from the mainframe community. Also, someone suggested taking help from bz@. > Also, If it's too difficult, can there be any doable goals in the > > porting process that I can propose for the program and I would > > continue the project even after the program is over. I personally > > feel the project has good potential, and It will be very helpful in > > my learning growth. > > This is probably a better aim. I can't think of anything offhand. > Yeah. I'll look for achievable milestones. Regards, Shivank
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