linux-kernel - [PATCH v2] RISC-V: Add the directive for alignment of stvec's value

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Date:   Thu, 2 Aug 2018 23:21:56 +0800
From:   Zong Li <zong@...estech.com>
To:     <palmer@...ive.com>, <aou@...s.berkeley.edu>, <hch@...radead.org>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <greentime@...estech.com>
CC:     Zong Li <zong@...estech.com>
Subject: [PATCH v2] RISC-V: Add the directive for alignment of stvec's value

The stvec's value must be 4 byte alignment by specification definition.
These directives avoid to stvec be set the non-alignment value.

Signed-off-by: Zong Li <zong@...estech.com>
---
 arch/riscv/kernel/head.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index 3b6293f..11066d5 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -94,6 +94,7 @@ relocate:
 	or a0, a0, a1
 	sfence.vma
 	csrw sptbr, a0
+.align 2
 1:
 	/* Set trap vector to spin forever to help debug */
 	la a0, .Lsecondary_park
@@ -143,6 +144,7 @@ relocate:
 	tail smp_callin
 #endif
 
+.align 2
 .Lsecondary_park:
 	/* We lack SMP support or have too many harts, so park this hart */
 	wfi
-- 
2.7.4