From: Huang Ying <ying.huang@intel.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Russell King <linux@arm.linux.org.uk>,
Bjorn Helgaas <bhelgaas@google.com>,
Thomas Renninger <trenn@suse.de>, Len Brown <lenb@kernel.org>,
"Moore, Robert" <robert.moore@intel.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"bondd@us.ibm.com" <bondd@us.ibm.com>,
Myron Stowe <myron.stowe@redhat.com>
Subject: RE: [PATCH 2/2] ACPICA: support Generic Address Structure bit_offset in acpi_read/write
Date: Thu, 01 Dec 2011 09:11:34 +0800 [thread overview]
Message-ID: <1322701894.4849.72.camel@yhuang-dev> (raw)
In-Reply-To: <0207C53569FE594381A4F2EB66570B2A018ED45DCF@orsmsx508.amr.corp.intel.com>
On Thu, 2011-12-01 at 09:03 +0800, Luck, Tony wrote:
> > In the original acpi_read/write, we just call ioremap blindly, so the
> > code in the below patch will not introduce new issue for ia64. Do you
> > agree?
>
> See arch/ia64/mm/ioremap.c ... ioremap() on ia64 is smart and looks
> at attributes and makes new mapping match existing ones
>
> That doesn't deal with long-lived mappings and changes that I just
> mentioned in last e-mail - but it does mean that callers of ioremap()
> don't need to worry ... they can call "blindly".
I see. So you think it is better to enclose page_is_ram() with #ifndef
CONFIG_IA64 in the patch, so that only ioremap() is used?
Best Regards,
Huang Ying
next prev parent reply other threads:[~2011-12-01 1:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-11 23:05 [PATCH 0/2] acpi_read() bit_offset support Bjorn Helgaas
2011-11-11 23:05 ` [PATCH 1/2] ACPICA: acpi_read: update return value atomically Bjorn Helgaas
2011-11-11 23:05 ` [PATCH 2/2] ACPICA: support Generic Address Structure bit_offset in acpi_read/write Bjorn Helgaas
2011-11-15 15:13 ` Bjorn Helgaas
2011-11-15 16:49 ` Thomas Renninger
2011-11-16 15:45 ` Bjorn Helgaas
2011-11-16 19:58 ` Thomas Renninger
2011-11-17 0:15 ` Bjorn Helgaas
2011-12-12 15:39 ` Thomas Renninger
2011-11-16 23:27 ` Rafael J. Wysocki
2011-11-16 23:59 ` Bjorn Helgaas
2011-11-17 23:10 ` Rafael J. Wysocki
2011-11-17 0:51 ` Huang Ying
2011-11-17 20:27 ` Rafael J. Wysocki
2011-11-17 23:38 ` Thomas Renninger
2011-11-18 9:27 ` Rafael J. Wysocki
2011-11-18 1:04 ` Huang Ying
2011-11-18 9:25 ` Rafael J. Wysocki
2011-11-21 7:51 ` Huang Ying
2011-11-21 10:08 ` Russell King - ARM Linux
2011-11-28 23:03 ` Luck, Tony
2011-11-29 2:15 ` Huang Ying
2011-11-30 21:54 ` Luck, Tony
2011-12-01 0:49 ` Huang Ying
2011-12-01 0:53 ` Luck, Tony
2011-12-01 0:57 ` Huang Ying
2011-12-01 1:03 ` Luck, Tony
2011-12-01 1:11 ` Huang Ying [this message]
2011-12-01 17:35 ` Luck, Tony
2011-12-02 1:48 ` Huang Ying
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