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target/arm: check TGE and E2H flags for EL0 pauth traps

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According to ARM ARM we should only trap from the EL1&0 regime.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200206105448.4726-35-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Alex Bennée 2020-02-07 14:04:26 +00:00 committed by Peter Maydell
parent c2ddb7cf96
commit a7469a3c1e
1 changed files with 4 additions and 1 deletions
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5
target/arm/pauth_helper.c
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@ -371,7 +371,10 @@ static void pauth_check_trap(CPUARMState *env, int el, uintptr_t ra)
if (el < 2 && arm_feature(env, ARM_FEATURE_EL2)) {
uint64_t hcr = arm_hcr_el2_eff(env);
bool trap = !(hcr & HCR_API);
/* FIXME: ARMv8.1-VHE: trap only applies to EL1&0 regime. */
if (el == 0) {
/* Trap only applies to EL1&0 regime. */
trap &= (hcr & (HCR_E2H | HCR_TGE)) != (HCR_E2H | HCR_TGE);
}
/* FIXME: ARMv8.3-NV: HCR_NV trap takes precedence for ERETA[AB]. */
if (trap) {
pauth_trap(env, 2, ra);