• Vivek Goyal's avatar
    kexec: support kexec/kdump on EFI systems · 6a2c20e7
    Vivek Goyal authored
    This patch does two things.  It passes EFI run time mappings to second
    kernel in bootparams efi_info.  Second kernel parse this info and create
    new mappings in second kernel.  That means mappings in first and second
    kernel will be same.  This paves the way to enable EFI in kexec kernel.
    
    This patch also prepares and passes EFI setup data through bootparams.
    This contains bunch of information about various tables and their
    addresses.
    
    These information gathering and passing has been written along the lines
    of what current kexec-tools is doing to make kexec work with UEFI.
    
    [akpm@linux-foundation.org: s/get_efi/efi_get/g, per Matt]
    Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
    Cc: Borislav Petkov <bp@suse.de>
    Cc: Michael Kerrisk <mtk.manpages@gmail.com>
    Cc: Yinghai Lu <yinghai@kernel.org>
    Cc: Eric Biederman <ebiederm@xmission.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Matthew Garrett <mjg59@srcf.ucam.org>
    Cc: Greg Kroah-Hartman <greg@kroah.com>
    Cc: Dave Young <dyoung@redhat.com>
    Cc: WANG Chao <chaowang@redhat.com>
    Cc: Baoquan He <bhe@redhat.com>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Matt Fleming <matt@console-pimps.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    6a2c20e7
kexec-bzimage64.c 14.7 KB