On 09/07/2012 04:56 PM, Dave Young wrote: > > I did some digging about the efi boot kdump in slackware with kernel > from latest linus tree. I'm surprise that kdump works even without these > "noefi" and "acpi_rsdp=" > > With fedora 17 3.4.3 kernel passing "acpi_rsdp=" is enough for kdump > kernel booting. > > Actually in x86 setup code if bootloader do not pass correct efi_info in > boot_params efi_enabled will be set to 0 automaticlly. > > So as for this patch 'noefi' is not needed. > > I will do more testing to see why linus tree works without "acpi_rsdp=" > There's probably some efi changes between 3.4.3 - 3.6.0-rc4 cause this works. I have not got time to bisect it. Because it works without explicitly passing the kernel param, I will not update the patch anymore. Thanks everyone for your comments. -- Thanks Dave
