diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-02-07 14:04:24 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-02-07 14:04:24 +0000 |
| commit | 4351cb72fb65926136ab618c9e40c1f5a8813251 (patch) | |
| tree | 1c5de999351d559f9c2e9c00efadf34900976ef6 /target | |
| parent | aaec143212bb70ac9549cf73203d13100bd5c7c2 (diff) | |
target/arm: Update aa64_zva_access for EL2
The comment that we don't support EL2 is somewhat out of date.
Update to include checks against HCR_EL2.TDZ.
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200206105448.4726-24-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/helper.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index e4f368d96b..e41bece6b5 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4159,11 +4159,27 @@ static void tlbi_aa64_ipas2e1is_write(CPUARMState *env, const ARMCPRegInfo *ri, static CPAccessResult aa64_zva_access(CPUARMState *env, const ARMCPRegInfo *ri, bool isread) { - /* We don't implement EL2, so the only control on DC ZVA is the - * bit in the SCTLR which can prohibit access for EL0. - */ - if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_DZE)) { - return CP_ACCESS_TRAP; + int cur_el = arm_current_el(env); + + if (cur_el < 2) { + uint64_t hcr = arm_hcr_el2_eff(env); + + if (cur_el == 0) { + if ((hcr & (HCR_E2H | HCR_TGE)) == (HCR_E2H | HCR_TGE)) { + if (!(env->cp15.sctlr_el[2] & SCTLR_DZE)) { + return CP_ACCESS_TRAP_EL2; + } + } else { + if (!(env->cp15.sctlr_el[1] & SCTLR_DZE)) { + return CP_ACCESS_TRAP; + } + if (hcr & HCR_TDZ) { + return CP_ACCESS_TRAP_EL2; + } + } + } else if (hcr & HCR_TDZ) { + return CP_ACCESS_TRAP_EL2; + } } return CP_ACCESS_OK; } |