These patches make the necessary changes to get SGI UVs working with the latest EFI memory mapping code. The motivation behind the changes is fairly simple: Patch 1: The current efi_call_virt macro will not work with function pointers that don't live in efi.systab->runtime Patch 2: The efi_call assembly code incorrectly puts the return address from the current stack frame into the space reserved for the arguments in the stack frame that we're setting up for our EFI runtime call, instead of the 7th argument to efi_call. I'm pretty sure that the second patch should be fine in its current state, but there will likely need to be some discussion about how to properly handle the stuff I'm doing in the first patch. I know we need to do something kind of like what I did, but I know my copied/pasted UV-specific macros are not how we'll want to implement this in the end. Please note that, as requested, these patches apply to the current tip/master branch, but they will not apply out-of-the-box to linus/master. Let me know what everybody thinks! Cc: Dimitri Sivanich <sivanich@xxxxxxx> Cc: Russ Anderson <rja@xxxxxxx> Cc: Mike Travis <travis@xxxxxxx> Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: x86@xxxxxxxxxx Cc: linux-efi@xxxxxxxxxxxxxxx Alex Thorlton (2): Create UV efi_call macros Fix efi_call arch/x86/include/asm/efi.h | 3 ++ arch/x86/platform/efi/efi_stub_64.S | 2 +- arch/x86/platform/uv/bios_uv.c | 3 +- drivers/firmware/efi/runtime-wrappers.c | 44 +------------------------- include/linux/efi.h | 55 +++++++++++++++++++++++++++++++++ 5 files changed, 61 insertions(+), 46 deletions(-) -- 1.8.5.6 -- 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
