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target/arm: Don't honour PSTATE.PAN when HCR_EL2.{NV, NV1} == {1, 1} 

For FEAT_NV, when HCR_EL2.{NV,NV1} is {1,1} PAN is always disabled
even when the PSTATE.PAN bit is set. Implement this by having
arm_pan_enabled() return false in this situation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
This commit is contained in:
Peter Maydell 2024-01-09 14:43:50 +00:00
parent 7fda076357
commit f11440b426
1 changed files with 3 additions and 0 deletions
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3
target/arm/helper.c
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@ -266,6 +266,9 @@ void init_cpreg_list(ARMCPU *cpu)
static bool arm_pan_enabled(CPUARMState *env)
{
if (is_a64(env)) {
if ((arm_hcr_el2_eff(env) & (HCR_NV | HCR_NV1)) == (HCR_NV | HCR_NV1)) {
return false;
}
return env->pstate & PSTATE_PAN;
} else {
return env->uncached_cpsr & CPSR_PAN;