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target/arm: Apply access checks to neoverse-n1 special registers

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Access to many of the special registers is enabled or disabled
by ACTLR_EL[23], which we implement as constant 0, which means
that all writes outside EL3 should trap.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230811214031.171020-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2023-08-31 09:45:15 +01:00 • committed by Peter Maydell
parent d8100822d6
commit 6d482423fc
3 changed files with 41 additions and 11 deletions
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4
target/arm/helper.c
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@ -319,8 +319,8 @@ static CPAccessResult access_tpm(CPUARMState *env, const ARMCPRegInfo *ri,
}
/* Check for traps from EL1 due to HCR_EL2.TVM and HCR_EL2.TRVM. */
static CPAccessResult access_tvm_trvm(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
CPAccessResult access_tvm_trvm(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
if (arm_current_el(env) == 1) {
uint64_t trap = isread ? HCR_TRVM : HCR_TVM;