Messages in this thread | | | Date | Wed, 14 Aug 2019 19:47:32 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH V38 15/29] acpi: Ignore acpi_rsdp kernel param when the kernel has been locked down |
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On Wed, Aug 14, 2019 at 10:14:54AM -0700, Matthew Garrett wrote: > We explicitly don't want to pay attention to the acpi_rsdp kernel > parameter in early boot except for the case of finding the SRAT table, > and we only need that if CONFIG_RANDOMIZE_BASE and > CONFIG_MEMORY_HOTREMOVE are set. However, we *do* want to tell the > actual kernel where the RSDP is if we found it via some other means, > so we can't just clear the boot parameters value.
Ok.
> The kernel proper will parse the command line again and will then (if > lockdown isn't enabled) override the actual value we passed up in boot > params.
Yeah, ok, I see what you're doing there. AFAICT, you do that in
setup_arch->acpi_boot_table_init-> ... -> acpi_os_get_root_pointer()
I hope nothing needs it earlier because then we'll have to restructure again...
Thx.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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