Messages in this thread | | | Subject | Re: [PATCH v4 0/4] LoongArch: Support new relocation types | From | Xi Ruoyao <> | Date | Sat, 30 Jul 2022 01:55:29 +0800 |
| |
On Fri, 2022-07-29 at 20:19 +0800, Youling Tang wrote:
> On 07/29/2022 07:45 PM, Xi Ruoyao wrote: > > Hmm... The problem is the "addresses" of per-cpu symbols are faked: they > > are actually offsets from $r21. So we can't just load such an offset > > with PCALA addressing. > > > > It looks like we'll need to introduce an attribute for GCC to make an > > variable "must be addressed via GOT", and add the attribute into > > PER_CPU_ATTRIBUTES.
> Yes, we need a GCC attribute to specify the per-cpu variable.
GCC patch adding "addr_global" attribute for LoongArch: https://gcc.gnu.org/pipermail/gcc-patches/2022-July/599064.html
An experiment to use it: https://github.com/xry111/linux/commit/c1d5d70
This fixes "modprobe x_tables" for me. -- Xi Ruoyao <xry111@xry111.site> School of Aerospace Science and Technology, Xidian University
| |