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new 586b9c54ac arch/arm64 Fix the SP unalignment issues zynq-mpsoc and
zcu111 borad was broken by #15437, because #15437 changes ARM64_CONTEXT_REGS
from 36 to 37, resulting in the stack no longer being 16-byte aligned which
appears to violate the ARMv8-A architecture's requirement for 16-byte stack
alignment. this commit changes ARM64_CONTEXT_REGS to 38 to fix this issues.
586b9c54ac is described below
commit 586b9c54ac5f74e9bf9f488ef3dadcf0f86b4aef
Author: zouboan <zoub...@hotmail.com>
AuthorDate: Mon Feb 3 18:50:04 2025 +0800
arch/arm64 Fix the SP unalignment issues
zynq-mpsoc and zcu111 borad was broken by #15437, because #15437 changes
ARM64_CONTEXT_REGS from 36 to 37, resulting in the stack no longer being
16-byte aligned which appears to violate the ARMv8-A architecture's
requirement for 16-byte stack alignment. this commit changes
ARM64_CONTEXT_REGS
to 38 to fix this issues.
---
arch/arm64/include/irq.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/irq.h b/arch/arm64/include/irq.h
index 7467691a28..485d70492f 100644
--- a/arch/arm64/include/irq.h
+++ b/arch/arm64/include/irq.h
@@ -154,10 +154,11 @@
#define REG_SP_EL0 (34)
#define REG_EXE_DEPTH (35)
#define REG_SCTLR_EL1 (36)
+#define REG_RESERVED (37)
/* In Armv8-A Architecture, the stack must align with 16 byte */
-#define ARM64_CONTEXT_REGS (37)
+#define ARM64_CONTEXT_REGS (38)
#define ARM64_CONTEXT_SIZE (8 * ARM64_CONTEXT_REGS)
#ifdef CONFIG_ARCH_FPU
