From 6859bb07c8fd8e11a4763a372705e96e03e27513 Mon Sep 17 00:00:00 2001
From: yining wang <103822966+yeanwang666@users.noreply.github.com>
Date: Tue, 11 Nov 2025 02:15:39 +0000
Subject: [PATCH 1/2] aarch64: default should disable SPAN Signed-off-by:
 Weikang Guo guoweikang@kylinos.cn

---
 src/aarch64/init.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/aarch64/init.rs b/src/aarch64/init.rs
index 61a79da..c70dd1c 100644
--- a/src/aarch64/init.rs
+++ b/src/aarch64/init.rs
@@ -91,6 +91,7 @@ pub unsafe fn init_mmu(root_paddr: PhysAddr) {
 
     // Enable the MMU and turn on I-cache and D-cache
     SCTLR_EL1.modify(SCTLR_EL1::M::Enable + SCTLR_EL1::C::Cacheable + SCTLR_EL1::I::Cacheable);
+    // Disable SPAN
     barrier::isb(barrier::SY);
 }
 

From 9c8a870c50c33fed8a3ea337afe64d8d883d6faa Mon Sep 17 00:00:00 2001
From: yining wang <103822966+yeanwang666@users.noreply.github.com>
Date: Tue, 11 Nov 2025 06:08:41 +0000
Subject: [PATCH 2/2] Modify the missing code to  Disable SPAN

---
 src/aarch64/init.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/aarch64/init.rs b/src/aarch64/init.rs
index c70dd1c..afa0acc 100644
--- a/src/aarch64/init.rs
+++ b/src/aarch64/init.rs
@@ -92,6 +92,7 @@ pub unsafe fn init_mmu(root_paddr: PhysAddr) {
     // Enable the MMU and turn on I-cache and D-cache
     SCTLR_EL1.modify(SCTLR_EL1::M::Enable + SCTLR_EL1::C::Cacheable + SCTLR_EL1::I::Cacheable);
     // Disable SPAN
+    SCTLR_EL1.set(SCTLR_EL1.get() | (1 << 23));
     barrier::isb(barrier::SY);
 }