linux-kernel - Re: [PATCH 00/12] Enable build system on macOS hosts

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Message-ID: <ZsInkfDqwzd2ojHz@AALNPWKJENSEN.aal.scsc.local>
Date: Sun, 18 Aug 2024 18:55:45 +0200
From: Klaus Jensen <k.jensen@...sung.com>
To: Barry Song <21cnbao@...il.com>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Daniel Gomez
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Subject: Re: [PATCH 00/12] Enable build system on macOS hosts

On Aug 17 13:11, Barry Song wrote:
> On Thu, Aug 8, 2024 at 2:20 AM Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> >
> > On Wed, Aug 07, 2024 at 01:56:38PM +0000, Daniel Gomez wrote:
> > > On Wed, Aug 07, 2024 at 01:01:08PM GMT, Greg Kroah-Hartman wrote:
> > > > On Wed, Aug 07, 2024 at 01:09:14AM +0200, Daniel Gomez via B4 Relay wrote:
> > > > > This patch set allows for building the Linux kernel for arm64 in macOS with
> > > > > LLVM.
> > > >
> > > > Is this a requirement somewhere that this must work?  It seems like an
> > > > odd request, what workflows require cross-operating-system builds like
> > > > this?
> > >
> > > This isn't a requirement, but it would, for example, support workflows for QEMU
> > > users and developers on macOS. They could build/compile the kernel natively and
> > > use it to launch QEMU instances, simplifying their process.
> >
> > But that's not a real workload of anyone?  How often does this ever come
> > up?  Who is going to maintain this cross-build functionality over time?
> 
> it is a real workload of me,  i was running qemu-system-aarch64 on x86
> and it was
> pretty slow. so got a M3 pro to accelerate my development. frequently changing
> kernel's source code, i am using qemu-system-aarch64 to do quick verification.
> 

Allow me to chime in as well. Working with qemu-system-aarch64 on an Mx
are a daily thing for me as well. Working with custom built kernels have
been a pain, and this really helps.