Hey, On 10-10-14 08:35, Ard Biesheuvel wrote: > On 6 October 2014 13:06, Ard Biesheuvel <[email protected]> wrote: >> This reverts commit 84be880560fb, which itself reverted my original >> attempt to move x86 from #include'ing .c files from across the tree >> to using the EFI stub built as a static library. >> >> The issue that affected the original approach was that splitting >> the implementation into several .o files resulted in the variable >> 'efi_early' becoming a global with external linkage, which under >> -fPIC implies that references to it must go through the GOT. However, >> dealing with this additional GOT entry turned out to be troublesome >> on some EFI implementations. (GCC's visibility=hidden attribute is >> supposed to lift this requirement, but it turned out not to work on >> the 32-bit build.) >> >> Instead, use a pure getter function to get a reference to efi_early. >> This approach results in no additional GOT entries being generated, >> so there is no need for any changes in the early GOT handling. >> >> Cc: Maarten Lankhorst <[email protected]> >> Cc: Josh Boyer <[email protected]> >> Cc: Linus Torvalds <[email protected]> >> Signed-off-by: Ard Biesheuvel <[email protected]> >> --- >> >> Gents, >> >> This is a request for testing: I would like to find out if this patch >> fixes Maarten's issue without breaking anything like it did for Josh >> and Linus the first time around. >> > > Any takers? Sorry it was on my todo list but I lost access to my laptop for a while. Normal EFI boot through refind works at least, but I think netboot may use a slightly different codepath which I can't test right now.
Tested-By: Maarten Lankhorst <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
