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[PATCH v3 07/25] target/arm: SCR_EL3.NS may be RES1
From: |
Richard Henderson |
Subject: |
[PATCH v3 07/25] target/arm: SCR_EL3.NS may be RES1 |
Date: |
Tue, 21 Feb 2023 16:33:18 -1000 |
With RME, SEL2 must also be present to support secure state.
The NS bit is RES1 if SEL2 is not present.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/helper.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 3650234c73..ae8b3f6a48 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -1856,6 +1856,9 @@ static void scr_write(CPUARMState *env, const
ARMCPRegInfo *ri, uint64_t value)
}
if (cpu_isar_feature(aa64_sel2, cpu)) {
valid_mask |= SCR_EEL2;
+ } else if (cpu_isar_feature(aa64_rme, cpu)) {
+ /* With RME and without SEL2, NS is RES1 (R_GSWWH, I_DJJQJ). */
+ value |= SCR_NS;
}
if (cpu_isar_feature(aa64_mte, cpu)) {
valid_mask |= SCR_ATA;
--
2.34.1
- Re: [PATCH v3 02/25] target/arm: Stub arm_hcr_el2_eff for m-profile, (continued)
- [PATCH v3 03/25] target/arm: Diagnose incorrect usage of arm_is_secure subroutines, Richard Henderson, 2023/02/21
- [PATCH v3 01/25] target/arm: Handle m-profile in arm_is_secure, Richard Henderson, 2023/02/21
- [PATCH v3 04/25] target/arm: Rewrite check_s2_mmu_setup, Richard Henderson, 2023/02/21
- [PATCH v3 10/25] include/exec/memattrs: Add two bits of space to MemTxAttrs, Richard Henderson, 2023/02/21
- [PATCH v3 08/25] target/arm: Add RME cpregs, Richard Henderson, 2023/02/21
- [PATCH v3 07/25] target/arm: SCR_EL3.NS may be RES1,
Richard Henderson <=
- [PATCH v3 13/25] target/arm: Remove __attribute__((nonnull)) from ptw.c, Richard Henderson, 2023/02/21
- [PATCH v3 05/25] target/arm: Add isar_feature_aa64_rme, Richard Henderson, 2023/02/21
- [PATCH v3 06/25] target/arm: Update SCR and HCR for RME, Richard Henderson, 2023/02/21
- [PATCH v3 09/25] target/arm: Introduce ARMSecuritySpace, Richard Henderson, 2023/02/21
- [PATCH v3 12/25] target/arm: Introduce ARMMMUIdx_Phys_{Realm,Root}, Richard Henderson, 2023/02/21