Re: [PATCH 10/11] acpi: Ignore acpi_rsdp kernel parameter in a secureboot environment

[Shuah Khan]

On Tue, Sep 4, 2012 at 10:38 AM, Matthew Garrett <mjg@xxxxxxxxxx> wrote:
> On Tue, Sep 04, 2012 at 10:30:46AM -0600, Shuah Khan wrote:
>> On Tue, Sep 4, 2012 at 9:55 AM, Matthew Garrett <mjg@xxxxxxxxxx> wrote:
>> > From: Josh Boyer <jwboyer@xxxxxxxxxx>
>> >
>> > This option allows userspace to pass the RSDP address to the kernel.  This
>> > could potentially be used to circumvent the secure boot trust model.
>> > We ignore the setting if we don't have the CAP_SECURE_FIRMWARE capability.
>>
>> Does this mean, acpi_rsdp is disabled on all current platforms that
>> don't support CAP_SECURE_FIRMWARE?
>
> No, if you're not using secure boot then you'll have
> CAP_SECURE_FIRMWARE.

Gotta say this capability name is confusing. Naming is
CAP_PRE_SECURE_BOOT or something along the lines might be a better
choice. When I just look at this name, I sure thought this
CAP_SECURE_FIRMWARE true means it is a secure boot capable firmware.

-- Shuah
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