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| author |   Sami Tolvanen <samitolvanen@google.com> | 2023-09-27 22:48:01 +0000 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2023-10-27 14:43:07 -0700 |
| commit | e609b4f4252a2ad2454736078693571b9fbff019 (patch) | |
| tree | 3d7a377db07e312efe5275e80d9119b84a1b7b99 /arch/riscv/kernel/suspend_entry.S | |
| parent | riscv: Deduplicate IRQ stack switching (diff) | |
| download | wireguard-linux-e609b4f4252a2ad2454736078693571b9fbff019.tar.xz wireguard-linux-e609b4f4252a2ad2454736078693571b9fbff019.zip | |
riscv: Move global pointer loading to a macro
In Clang 17, -fsanitize=shadow-call-stack uses the newly declared
platform register gp for storing shadow call stack pointers. As
this is obviously incompatible with gp relaxation, in preparation
for CONFIG_SHADOW_CALL_STACK support, move global pointer loading
to a single macro, which we can cleanly disable when SCS is used
instead.
Link: https://reviews.llvm.org/rGaa1d2693c256
Link: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/commit/a484e843e6eeb51f0cb7b8819e50da6d2444d769
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20230927224757.1154247-11-samitolvanen@google.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel/suspend_entry.S')
| -rw-r--r-- | arch/riscv/kernel/suspend_entry.S | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/riscv/kernel/suspend_entry.S b/arch/riscv/kernel/suspend_entry.S index f7960c7c5f9e..d5cf8b575777 100644 --- a/arch/riscv/kernel/suspend_entry.S +++ b/arch/riscv/kernel/suspend_entry.S @@ -61,10 +61,7 @@ END(__cpu_suspend_enter) SYM_TYPED_FUNC_START(__cpu_resume_enter) /* Load the global pointer */ - .option push - .option norelax - la gp, __global_pointer$ - .option pop + load_global_pointer #ifdef CONFIG_MMU /* Save A0 and A1 */ |