From: Hanjun Guo <hanjun.guo@linaro.org>
To: "H. Peter Anvin" <hpa@zytor.com>,
"Luck, Tony" <tony.luck@intel.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Graeme Gregory <graeme.gregory@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>
Subject: Re: [PATCH v2 1/3] ACPI: ARM64 does not have a BIOS add config for BIOS table scan.
Date: Thu, 17 Jul 2014 11:18:06 +0800 [thread overview]
Message-ID: <53C7406E.40902@linaro.org> (raw)
In-Reply-To: <53C70F78.40206@zytor.com>
On 2014-7-17 7:49, H. Peter Anvin wrote:
> On 07/16/2014 04:46 PM, Luck, Tony wrote:
>>> + select ACPI_LEGACY_TABLES_LOOKUP if ACPI
>>
>>> This shouldn't actually be set on IA64, should it? IA64 doesn't have
>>> BIOS, either, it has EFI/UEFI, like ARM64...
Yes, I agree with you, thanks for pointing this out. if I remember
correctly, the EFI standard was introduced when IA64 came out.
>>
>> Which ACPI tables are in the "LEGACY" category affected by this option?
>>
>
> That's not what this is about... it is about how you find the root pointer.
>
> On a BIOS system it is found by scanning low memory. On an EFI system
> it is found by querying EFI for a specific UUID.
Thanks for the explanation.
Tony, if it is ok with you, I will modify the patch and will not select
ACPI_LEGACY_TABLES_LOOKUP on IA64, I'm waiting for your final confirmation.
Thanks
Hanjun
WARNING: multiple messages have this Message-ID (diff)
From: hanjun.guo@linaro.org (Hanjun Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] ACPI: ARM64 does not have a BIOS add config for BIOS table scan.
Date: Thu, 17 Jul 2014 11:18:06 +0800 [thread overview]
Message-ID: <53C7406E.40902@linaro.org> (raw)
In-Reply-To: <53C70F78.40206@zytor.com>
On 2014-7-17 7:49, H. Peter Anvin wrote:
> On 07/16/2014 04:46 PM, Luck, Tony wrote:
>>> + select ACPI_LEGACY_TABLES_LOOKUP if ACPI
>>
>>> This shouldn't actually be set on IA64, should it? IA64 doesn't have
>>> BIOS, either, it has EFI/UEFI, like ARM64...
Yes, I agree with you, thanks for pointing this out. if I remember
correctly, the EFI standard was introduced when IA64 came out.
>>
>> Which ACPI tables are in the "LEGACY" category affected by this option?
>>
>
> That's not what this is about... it is about how you find the root pointer.
>
> On a BIOS system it is found by scanning low memory. On an EFI system
> it is found by querying EFI for a specific UUID.
Thanks for the explanation.
Tony, if it is ok with you, I will modify the patch and will not select
ACPI_LEGACY_TABLES_LOOKUP on IA64, I'm waiting for your final confirmation.
Thanks
Hanjun
next prev parent reply other threads:[~2014-07-17 3:19 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-09 9:39 [PATCH v2 0/3] Clean up ACPI core to prepare for running ACPI on ARM64 Hanjun Guo
2014-07-09 9:39 ` Hanjun Guo
2014-07-09 9:39 ` [PATCH v2 1/3] ACPI: ARM64 does not have a BIOS add config for BIOS table scan Hanjun Guo
2014-07-09 9:39 ` Hanjun Guo
2014-07-16 23:37 ` H. Peter Anvin
2014-07-16 23:37 ` H. Peter Anvin
2014-07-16 23:46 ` Luck, Tony
2014-07-16 23:46 ` Luck, Tony
2014-07-16 23:46 ` Luck, Tony
2014-07-16 23:49 ` H. Peter Anvin
2014-07-16 23:49 ` H. Peter Anvin
2014-07-17 3:18 ` Hanjun Guo [this message]
2014-07-17 3:18 ` Hanjun Guo
2014-07-17 16:58 ` Luck, Tony
2014-07-17 16:58 ` Luck, Tony
2014-07-17 16:58 ` Luck, Tony
2014-07-18 9:22 ` Hanjun Guo
2014-07-18 9:22 ` Hanjun Guo
2014-07-09 9:39 ` [PATCH v2 2/3] ACPI: Don't use acpi_lapic in ACPI core code Hanjun Guo
2014-07-09 9:39 ` Hanjun Guo
2014-07-09 9:39 ` [PATCH v2 3/3] ACPI / processor: Introduce ARCH_HAS_ACPI_PDC Hanjun Guo
2014-07-09 9:39 ` Hanjun Guo
2014-07-16 23:32 ` [PATCH v2 0/3] Clean up ACPI core to prepare for running ACPI on ARM64 Rafael J. Wysocki
2014-07-16 23:32 ` Rafael J. Wysocki
2014-07-16 23:28 ` Luck, Tony
2014-07-16 23:28 ` Luck, Tony
2014-07-16 23:28 ` Luck, Tony
2014-07-16 23:39 ` H. Peter Anvin
2014-07-16 23:39 ` H. Peter Anvin
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