On 10/29/13 at 11:05am, Dave Young wrote: > On 10/28/13 at 06:53pm, Dave Young wrote: > > On 10/28/13 at 10:51am, Matthew Garrett wrote: > > > On Mon, Oct 28, 2013 at 06:45:32PM +0800, Dave Young wrote: > > > > On 10/28/13 at 10:39am, Matthew Garrett wrote: > > > > > On Mon, Oct 28, 2013 at 06:34:12PM +0800, Dave Young wrote: > > > > > > On 10/28/13 at 10:12am, Matthew Garrett wrote: > > > > > > > Right, but previously acpi_rsdp was passed automatically and now it > > > > > > > won't be? > > > > > > > > > > > > Yes, it was. I'm removing them in kexec-tools patches for efi runtime support. > > > > > > > > > > If I upgrade kexec-tools and try to launch an old kernel, I now need to > > > > > add an extra parameter? > > > > > > > > Yes, it should work by passing the acpi_rsdp= via --append > > > > > > Yes, that's my point. You're breaking old configurations by requiring > > > the user to pass an additional argument. > > > > Hmm, I will do some test without this patch, if it works well it's not > > harmful to drop this one. > > Removing this patch does not work because in this series efi_info is passed into > 2nd kernel thus 2nd kernel will initilize efi but it does not have related code > to handle the converted talbe addresses and it will endter virtual mode again. > > I will think about how to solve this problem. > The only way what I can think out is introduce a flag in x86 setup header. Will try this way, the userspace code will use old logic if the kernel is old.
