[PATCH v31 03/12] arm64: kdump: reserve memory for crash dump kernel

AKASHI Takahiro
2017-02-02T13:44:24Z

On Thu, Feb 02, 2017 at 11:26:20AM +0000, Mark Rutland wrote:
> On Thu, Feb 02, 2017 at 01:52:36PM +0900, AKASHI Takahiro wrote:
> > On Wed, Feb 01, 2017 at 03:26:09PM +0000, Mark Rutland wrote:
> > > On Wed, Feb 01, 2017 at 09:46:22PM +0900, AKASHI Takahiro wrote:
> > > > + pr_info("Reserving %lldMB of memory at %lldMB for crashkernel\n",
> > > > + crash_size >> 20, crash_base >> 20);
> > >
> > > We only page-align the size, so the MB will be a little off, but that's
> > > probably OK. However, it would also be nicer to log the base as an
> > > address.
> >
> > You might notice that the exact same message is used by all the other
> > architectures, but
>
> Almost all; I see arch/sh prints the address with %08x. ;)
>
> > > Could we dump this as we do for the kernel memory layout? e.g.
> > >
> > > pr_info("crashkernel reserved: 0x%016lx - 0x%016lx (%lld MB)\n",
> > > crash_base, crash_base + crash_size, crash_size >> 20);
> >
> > We can go either way.
>
> Even if it's different from other archtiectures, I'd prefer to log as
> above, with the range in hex.

OK.

-Takhiro AKASHI

> Thanks,
> Mark.