From de247db5e6384b138f270e0a7c745989b5a9c23b Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Wed, 4 Sep 2024 17:29:58 -0400
Subject: [PATCH] menvcfg also
---
kernel/riscv.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel/riscv.h b/kernel/riscv.h
index d80e78e..f7aaa8a 100644
--- a/kernel/riscv.h
+++ b/kernel/riscv.h
@@ -196,14 +196,16 @@ static inline uint64
r_menvcfg()
{
uint64 x;
- asm volatile("csrr %0, menvcfg" : "=r" (x) );
+ // asm volatile("csrr %0, menvcfg" : "=r" (x) );
+ asm volatile("csrr %0, 0x30a" : "=r" (x) );
return x;
}
static inline void
w_menvcfg(uint64 x)
{
- asm volatile("csrw menvcfg, %0" : : "r" (x));
+ // asm volatile("csrw menvcfg, %0" : : "r" (x));
+ asm volatile("csrw 0x30a, %0" : : "r" (x));
}
// Physical Memory Protection