From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
Date: Tue, 13 Oct 2020 15:10:54 +0000 (+0200)
Subject: target/riscv: Fix update of hstatus.SPVP
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ace544532c4064e995ef69ec9dc93aad62e19988;p=qemu.git

target/riscv: Fix update of hstatus.SPVP

When trapping from virt into HS mode, hstatus.SPVP was set to
the value of sstatus.SPP, as according to the specification both
flags should be set to the same value.
However, the assignment of SPVP takes place before SPP itself is
updated, which results in SPVP having an outdated value.

Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20201013151054.396481-1-georg.kotheimer@kernkonzept.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---

diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 6c68239a46..47d05fe34c 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -938,7 +938,7 @@ void riscv_cpu_do_interrupt(CPUState *cs)
                 /* Trap into HS mode, from virt */
                 riscv_cpu_swap_hypervisor_regs(env);
                 env->hstatus = set_field(env->hstatus, HSTATUS_SPVP,
-                                         get_field(env->mstatus, SSTATUS_SPP));
+                                         env->priv);
                 env->hstatus = set_field(env->hstatus, HSTATUS_SPV,
                                          riscv_cpu_virt_enabled(env));