From: Christoph Hellwig <hch@infradead.org>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
npiggin@gmail.com, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 05/10] powerpc/mm: Do early ioremaps from top to bottom on PPC64 too.
Date: Tue, 13 Aug 2019 22:55:25 -0700 [thread overview]
Message-ID: <20190814055525.GA12744@infradead.org> (raw)
In-Reply-To: <019c5d90f7027ccff00e38a3bcd633d290f6af59.1565726867.git.christophe.leroy@c-s.fr>
On Tue, Aug 13, 2019 at 08:11:38PM +0000, Christophe Leroy wrote:
> Until vmalloc system is up and running, ioremap basically
> allocates addresses at the border of the IOREMAP area.
Note that while a few other architectures have a magic hack like powerpc
to make ioremap work before vmalloc, the normal practice would be
to explicitly use early_ioremap. I guess your change is fine for now,
but it might make sense convert powerpc to the explicit early_ioremap
scheme as well.
next prev parent reply other threads:[~2019-08-14 5:55 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-13 20:11 [PATCH v1 01/10] powerpc/mm: drop ppc_md.iounmap() Christophe Leroy
2019-08-13 20:11 ` [PATCH v1 02/10] powerpc/mm: rework io-workaround invocation Christophe Leroy
2019-08-14 5:38 ` Christoph Hellwig
2019-08-13 20:11 ` [PATCH v1 03/10] powerpc/mm: move common 32/64 bits ioremap functions into ioremap.c Christophe Leroy
2019-08-13 20:11 ` [PATCH v1 04/10] powerpc/mm: move ioremap_prot() " Christophe Leroy
2019-08-13 20:11 ` [PATCH v1 05/10] powerpc/mm: Do early ioremaps from top to bottom on PPC64 too Christophe Leroy
2019-08-14 5:55 ` Christoph Hellwig [this message]
2019-08-14 6:10 ` Christophe Leroy
2019-08-14 6:14 ` Christoph Hellwig
2019-08-19 13:42 ` Nicholas Piggin
2019-08-20 0:20 ` Michael Ellerman
2019-08-20 5:10 ` Christophe Leroy
2019-08-13 20:11 ` [PATCH v1 06/10] powerpc/mm: make ioremap_bot common to all Christophe Leroy
2019-08-13 20:11 ` [PATCH v1 07/10] powerpc/mm: move iounmap() into ioremap.c and drop __iounmap() Christophe Leroy
2019-08-19 12:55 ` Michael Ellerman
2019-08-13 20:11 ` [PATCH v1 08/10] powerpc/mm: move __ioremap_at() and __iounmap_at() into ioremap.c Christophe Leroy
2019-08-14 5:23 ` Christoph Hellwig
2019-08-20 0:18 ` Michael Ellerman
2019-08-13 20:11 ` [PATCH v1 09/10] powerpc/mm: make __ioremap_caller() common to PPC32 and PPC64 Christophe Leroy
2019-08-13 20:11 ` [PATCH v1 10/10] powerpc/mm: refactor ioremap_range() and use ioremap_page_range() Christophe Leroy
2019-08-14 5:49 ` Christoph Hellwig
2019-08-14 6:23 ` Christophe Leroy
2019-08-14 6:30 ` Christoph Hellwig
2019-08-14 5:19 ` [PATCH v1 01/10] powerpc/mm: drop ppc_md.iounmap() Christoph Hellwig
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