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Confidential guest smust reload their bios rom upon reset. This is because bios memory is encrypted and upon reset, the contents of the old bios memory is lost and cannot be re-used. To this end, export a new x86 function x86_bios_rom_reload() to reload the bios again. This function will be used in the subsequent patches. Reviewed-by: Bernhard Beschow <shentey@gmail.com> Signed-off-by: Ani Sinha <anisinha@redhat.com> Link: https://lore.kernel.org/r/20260225035000.385950-14-anisinha@redhat.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>