From: Mike Rapoport <rppt@linux.vnet.ibm.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Greg Ungerer <gerg@linux-m68k.org>, Sam Creasey <sammy@sammy.net>,
linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] m68k/page_no.h: force __va argument to be unsigned long
Date: Tue, 3 Jul 2018 18:30:20 +0300 [thread overview]
Message-ID: <20180703153019.GD4809@rapoport-lnx> (raw)
In-Reply-To: <20180703150535.GA21590@bombadil.infradead.org>
On Tue, Jul 03, 2018 at 08:05:35AM -0700, Matthew Wilcox wrote:
> On Tue, Jul 03, 2018 at 06:03:16PM +0300, Mike Rapoport wrote:
> > On Tue, Jul 03, 2018 at 04:20:54PM +0200, Michal Hocko wrote:
> > > On Tue 03-07-18 13:29:54, Mike Rapoport wrote:
> > > > Add explicit casting to unsigned long to the __va() parameter
> > >
> > > Why is this needed?
> >
> > To make it consitent with other architecures and asm-generic :)
> >
> > But more importantly, __memblock_free_late() passes u64 to page_to_pfn().
>
> Why does memblock work in terms of u64 instead of phys_addr_t?
Historically?
It started off with unsigned long, then commit e5f270954364 ("[LMB]: Make
lmb support large physical addressing") converted it to u64 for 32-bit
systems sake.
And the definition of ARCH_PHYS_ADDR_T_64BIT in commit 600715dcdf56
("generic: add phys_addr_t for holding physical addresses")) came in later.
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2018-07-03 15:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-03 10:29 [PATCH 0/3] m68k: switch to MEMBLOCK + NO_BOOTMEM Mike Rapoport
2018-07-03 10:29 ` [PATCH 1/3] m68k/bitops: convert __ffs to match generic declaration Mike Rapoport
2018-07-03 10:29 ` [PATCH 2/3] m68k/page_no.h: force __va argument to be unsigned long Mike Rapoport
2018-07-03 14:20 ` Michal Hocko
2018-07-03 15:03 ` Mike Rapoport
2018-07-03 15:05 ` Matthew Wilcox
2018-07-03 15:14 ` Michal Hocko
2018-07-03 15:39 ` Mike Rapoport
2018-07-03 15:47 ` Mike Rapoport
2018-07-03 15:55 ` Michal Hocko
2018-07-03 15:30 ` Mike Rapoport [this message]
2018-07-03 10:29 ` [PATCH 3/3] m68k: switch to MEMBLOCK + NO_BOOTMEM Mike Rapoport
2018-07-04 1:39 ` Greg Ungerer
2018-07-04 2:02 ` Greg Ungerer
2018-07-04 4:22 ` Mike Rapoport
2018-07-04 4:39 ` Greg Ungerer
2018-07-04 4:50 ` Mike Rapoport
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