Re: [Xen-devel] PLEASE REVERT URGENTLY: Re: [PATCH v5 2/3] x86/boot: add acpi rsdp address to setup_header

["H. Peter Anvin" <hpa@xxxxxxxxx>]

One more aspect on this patchset: when CONFIG_ACPI_TABLE_UPGRADE was
inroduced, it was seen as a security problem and disabled by default
(unlike for device tree, where feeding entries from the boot loader is
standard operating procedure.)

Thus functionally makes that possible to bypass that prohibition. Are we
giving up that battle, or should this also be conditionalized and
default to off (presumably with Xen requiring it)?

        -hpa

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