On Mon, Nov 20, 2017 at 02:41:47PM +0000, Mark Rutland wrote:

On Wed, Nov 15, 2017 at 01:34:16PM -0800, Sami Tolvanen wrote:

quoted

Use -fno-jump-tables to make sure clang doesn't generate branches
to EL1 virtual addresses.

Are there any other reasons that clang might generate absolute
references/relocations?

It would be nice if there was the option to disable that more generally,
rather than disabling individual optimizations. Is there any PIC/PIE
option that we could use?

We might need something simnilar for GCC, even if we're not seeing
problems today.

... and likewise for the EFI stub, which needs to be
position-independent much like the hyp code.

Thanks,
Mark.