[PATCH] target/riscv: Use background registers also for MSTATUS_MPV

From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: Alistair Francis <alistair.francis@wdc.com>,
	Georg Kotheimer <georg.kotheimer@kernkonzept.com>
Subject: [PATCH] target/riscv: Use background registers also for MSTATUS_MPV
Date: Thu, 11 Mar 2021 11:30:36 +0100	[thread overview]
Message-ID: <20210311103036.1401073-1-georg.kotheimer@kernkonzept.com> (raw)

The current condition for the use of background registers only
considers the hypervisor load and store instructions,
but not accesses from M mode via MSTATUS_MPRV+MPV.

Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
---
 target/riscv/cpu_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 2f43939fb6..d5d84d0d1c 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -321,7 +321,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
      * was called. Background registers will be used if the guest has
      * forced a two stage translation to be on (in HS or M mode).
      */
-    if (!riscv_cpu_virt_enabled(env) && riscv_cpu_two_stage_lookup(mmu_idx)) {
+    if (!riscv_cpu_virt_enabled(env) && two_stage) {
         use_background = true;
     }
 
-- 
2.30.1


