From: Thomas Gleixner <tglx@linutronix.de>
To: Toshi Kani <toshi.kani@hp.com>
Cc: mingo@redhat.com, hpa@zytor.com, akpm@linux-foundation.org,
travis@sgi.com, roland@purestorage.com, dan.j.williams@intel.com,
mcgrof@suse.com, x86@kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH RESEND 2/3] mm, x86: Remove region_is_ram() call from ioremap
Date: Tue, 21 Jul 2015 16:31:12 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.11.1507211620250.18576@nanos> (raw)
In-Reply-To: <1437088996-28511-3-git-send-email-toshi.kani@hp.com>
On Thu, 16 Jul 2015, Toshi Kani wrote:
> Note, removing the call to region_is_ram() is also necessary to
> fix bugs in region_is_ram(). walk_system_ram_range() requires
> RAM ranges be page-aligned in the iomem_resource table to work
> properly. This restriction has allowed multiple ioremaps to RAM
> (setup_data) which are page-unaligned. Using fixed region_is_ram()
> will cause these callers to start failing.
Which callers?
Thanks,
tglx
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next prev parent reply other threads:[~2015-07-21 14:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-16 23:23 [PATCH RESEND 0/3] mm, x86: Fix ioremap RAM check interfaces Toshi Kani
2015-07-16 23:23 ` [PATCH RESEND 1/3] mm, x86: Fix warning in ioremap RAM check Toshi Kani
2015-07-16 23:23 ` [PATCH RESEND 2/3] mm, x86: Remove region_is_ram() call from ioremap Toshi Kani
2015-07-21 14:31 ` Thomas Gleixner [this message]
2015-07-21 15:07 ` Toshi Kani
2015-07-16 23:23 ` [PATCH RESEND 3/3] mm: Fix bugs in region_is_ram() Toshi Kani
2015-07-18 1:23 ` [PATCH RESEND 0/3] mm, x86: Fix ioremap RAM check interfaces Dan Williams
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