[PATCH 0/4] LLVMLinux: Patches to enable the kernel to be compiled with clang/LLVM

On Thu, Jul 31, 2014 at 8:48 AM, Will Deacon [off-list ref] wrote:

On Thu, Jul 31, 2014 at 04:39:55PM +0100, Olof Johansson wrote:

quoted

On Thu, Jul 31, 2014 at 3:33 AM, Will Deacon [off-list ref] wrote:

quoted

On Thu, Jul 31, 2014 at 12:57:25AM +0100, behanw at converseincode.com wrote:

quoted

From: Behan Webster <redacted>

This patch set moves from using locally defined named registers to access the
stack pointer to using a globally defined named register. This allows the code
to work both with gcc and clang.

The LLVMLinux project aims to fully build the Linux kernel using both gcc and
clang (the C front end for the LLVM compiler infrastructure project).

Behan Webster (4):
  arm64: LLVMLinux: Add current_stack_pointer() for arm64
  arm64: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk
  arm64: LLVMLinux: Calculate current_thread_info from
    current_stack_pointer
  arm64: LLVMLinux: Use current_stack_pointer in kernel/traps.c

Once Andreas's comments have been addressed:

  Acked-by: Will Deacon [off-list ref]

Please can you send a new series after the merge window?

Given that the ARM64 KVM guys are still actively breaking -next, and
this is considerably smaller and lower risk than that, I think you can
take it for 3.17?

Hey, those breakages are in the kvm tree not the arm64 tree! I'd really
rather wait on these as I don't see the rush to get them in for 3.17 and
it's not beyond the realms of possibility that they could cause problems
for a particular version of GCC (at the very least, I'd need to re-run
all the testing I've been doing).

Yeah, it was somewhat tongue in cheek that made not have made it
across the wire.

3.18 is fine with me too even though I find the concerns to be quite unlikely.


-Olof