linux-kernel - Re: [PATCH] memmap: Parse "Reserved" together with "reserved"

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Date:   Wed, 26 Apr 2017 15:31:48 +0800
From:   Dave Young <dyoung@...hat.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Yinghai Lu <yinghai@...nel.org>, Simon Horman <horms@...ge.net.au>,
        kexec@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memmap: Parse "Reserved" together with "reserved"

On 04/26/17 at 03:28pm, Dave Young wrote:
> On 04/26/17 at 08:22am, Ingo Molnar wrote:
> > 
> > * Yinghai Lu <yinghai@...nel.org> wrote:
> > 
> > > For x86 with recent kernel after
> > >  commit 640e1b38b0 ("x86/boot/e820: Basic cleanup of e820.c")
> > > change "reserved" to "Reserved" in /sys firmware memmap and /proc/iomem.
> > > 
> > > So here, we add handling for that too.
> > > 
> > > Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> > > 
> > > ---
> > >  kexec/arch/i386/crashdump-x86.c |    2 ++
> > >  kexec/arch/ia64/kexec-ia64.c    |    2 ++
> > >  kexec/arch/mips/kexec-mips.c    |    2 ++
> > >  kexec/firmware_memmap.c         |    2 ++
> > >  4 files changed, 8 insertions(+)
> > 
> > I'd rather fix the bug I introduced and undo the reserved->Reserved string change 
> 
> This patch parses both 'reserved' and 'Reserved' it should be fine, but
> reverting the change in kernel sounds better..

Hmm, after press sending I noticed old kexec-tools with new kernel, it
is still a problem, so we'd better to revert the kernel changes.

> 
> > in e820.c: I didn't realize that it's exposed in sysfs and had quasi-ABI 
> > consequences for kexec.
> > 
> > Agreed?
> > 
> > Thanks,
> > 
> > 	Ingo
> > 
> > _______________________________________________
> > kexec mailing list
> > kexec@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/kexec
> 
> Thanks
> Dave

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