On Thu, 2012-10-18 at 11:10 +0800, Dave Young wrote: > In case efi booting, kdump need kernel parameter acpi_rsdp= to retrieve > the acpi root table physical address. > > Add a function cmdline_add_efi to get the address from /sys/firmware/efi/systab > If there's no such file or read fail the function will just do nothing. > > Tested efi boot Fedora 17 on thinkpad T420. > > Some background info for this issue: > http://lists.infradead.org/pipermail/kexec/2010-March/003889.html > > [v1 -> v2]: > Address comments from Khalid and Simon > use fgets instead of read(2) to iterate the file > do not add 'noefi' because kexec does not construct EFI signature > in bootloader signature in boot_params, so kexec'd kernel will > disable EFI automatically even without noefi. > > Signed-off-by: Dave Young <dyoung at redhat.com> > --- > kexec/arch/i386/crashdump-x86.c | 35 +++++++++++++++++++++++++++++++++++ > 1 file changed, 35 insertions(+) Looks good. Reviewed-by: Khalid Aziz <khalid at gonehiking.org>
