[PATCH 02/11] riscv: update asm call site in `call_on_irq_stack` to setup correct label
From: Deepak Gupta
Date: Thu Jul 24 2025 - 19:37:46 EST
Call sites written in asm performing indirect call, they need to setup
label register (t2/x7) with correct label.
Currently first kernel was compiled with `-save-temps` option and
normalized function signature string is captured and then placed at the
asm callsite.
TODO: to write a macro wrapper with toolchain support.
Signed-off-by: Deepak Gupta <debug@xxxxxxxxxxxx>
---
arch/riscv/kernel/entry.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 2660faf52232..598e17e800ae 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -389,6 +389,7 @@ SYM_FUNC_START(call_on_irq_stack)
load_per_cpu t0, irq_stack_ptr, t1
li t1, IRQ_STACK_SIZE
add sp, t0, t1
+ lui t2, %lpad_hash("FvP7pt_regsE")
jalr a1
/* Switch back to the thread shadow call stack */
--
2.43.0