Messages in this thread | | | Date | Tue, 4 Sep 2012 17:38:29 +0100 | From | Matthew Garrett <> | Subject | Re: [PATCH 10/11] acpi: Ignore acpi_rsdp kernel parameter in a secure boot environment |
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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@redhat.com> wrote: > > From: Josh Boyer <jwboyer@redhat.com> > > > > 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.
-- Matthew Garrett | mjg59@srcf.ucam.org
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