diff options
| author | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2016-02-03 13:46:33 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-02-03 13:46:33 +0000 |
| commit | 3526423e867765568ad95b8094ae8b4042cac215 (patch) | |
| tree | 9520aca8b5226e1c932e19e36463e13de47023dd /target-arm/helper.c | |
| parent | a0e966c93a0968d29ef51447d08a6b7be6f4d757 (diff) | |
target-arm: Implement the S2 MMU inputsize > pamax check
Implement the inputsize > pamax check for Stage 2 translations.
This is CONSTRAINED UNPREDICTABLE and we choose to fault.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1453932970-14576-4-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 31ff650147..5ea507f5bc 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -6790,6 +6790,7 @@ static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, } if (is_aa64) { + CPUARMState *env = &cpu->env; unsigned int pamax = arm_pamax(cpu); switch (stride) { @@ -6811,6 +6812,13 @@ static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, default: g_assert_not_reached(); } + + /* Inputsize checks. */ + if (inputsize > pamax && + (arm_el_is_aa64(env, 1) || inputsize > 40)) { + /* This is CONSTRAINED UNPREDICTABLE and we choose to fault. */ + return false; + } } else { /* AArch32 only supports 4KB pages. Assert on that. */ assert(stride == 9); |