From 17e829129d60d7d178d47ecbd8990e705690d352 Mon Sep 17 00:00:00 2001
From: Alvin Chang <alvinga@andestech.com>
Date: Tue, 16 Apr 2024 13:02:13 +0800
Subject: sbi: sbi_domain_context: Add spinlock for updating domain
 assigned_harts

Add spinlock protection to avoid race condition on assigned_harts
during domain context switching. Also, rename/add variables for
accessing the corresponding domain of target/current context.

Signed-off-by: Alvin Chang <alvinga@andestech.com>
Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
---
 include/sbi/sbi_domain.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include')

diff --git a/include/sbi/sbi_domain.h b/include/sbi/sbi_domain.h
index 4706cfca..a6e99c63 100644
--- a/include/sbi/sbi_domain.h
+++ b/include/sbi/sbi_domain.h
@@ -10,6 +10,7 @@
 #ifndef __SBI_DOMAIN_H__
 #define __SBI_DOMAIN_H__
 
+#include <sbi/riscv_locks.h>
 #include <sbi/sbi_types.h>
 #include <sbi/sbi_hartmask.h>
 #include <sbi/sbi_domain_context.h>
@@ -173,6 +174,8 @@ struct sbi_domain {
 	 * in the coldboot path
 	 */
 	struct sbi_hartmask assigned_harts;
+	/** Spinlock for accessing assigned_harts */
+	spinlock_t assigned_harts_lock;
 	/** Name of this domain */
 	char name[64];
 	/** Possible HARTs in this domain */
-- 
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