On Tue, 05 Nov, at 04:20:14PM, dyoung@xxxxxxxxxx wrote: > Old kexec-tools can not load new kernel. The reason is previously kexec-tools > do not fill efi_info in x86 setup header thus efi init fail and switch > to noefi boot. In new kexec-tools it will by default fill efi_info and > pass other efi required infomation to 2nd kernel so kexec kernel efi > initialization will success finally. > > To prevent from breaking userspace, add a new xloadflags bit so kexec-tools > will check the flag and switch to old logic. > > Signed-off-by: Dave Young <dyoung@xxxxxxxxxx> > --- > arch/x86/boot/header.S | 9 ++++++++- > arch/x86/include/uapi/asm/bootparam.h | 1 + > 2 files changed, 9 insertions(+), 1 deletion(-) > > --- linux-2.6.orig/arch/x86/boot/header.S > +++ linux-2.6/arch/x86/boot/header.S > @@ -391,7 +391,14 @@ xloadflags: > #else > # define XLF23 0 > #endif > - .word XLF0 | XLF1 | XLF23 > + > +#if defined(CONFIG_X86_64) && defined(CONFIG_EFI) && defined(CONFIG_KEXEC) ? > +# define XLF4 XLF_EFI_KEXEC > +#else > +# define XLF4 0 > +#endif > + -- Matt Fleming, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
