[PULL 02/14] target/arm: Timer _EL02 registers UNDEF for E2H == 0

Maintainers: Paolo Bonzini <pbonzini@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, Arnaud Minier <arnaud.minier@telecom-paris.fr>, "Inès Varhol" <ines.varhol@telecom-paris.fr>, Artyom Tarasenko <atar4qemu@gmail.com>, Alistair Francis <alistair@alistair23.me>, Thomas Huth <thuth@redhat.com>, Laurent Vivier <lvivier@redhat.com>
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[PULL 02/14] target/arm: Timer _EL02 registers UNDEF for E2H == 0
Posted by Peter Maydell 1 year, 11 months ago
The timer _EL02 registers should UNDEF for invalid accesses from EL2
or EL3 when HCR_EL2.E2H == 0, not take a cp access trap.  We were
delivering the exception to EL2 with the wrong syndrome.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240301183219.2424889-3-peter.maydell@linaro.org
---
 target/arm/helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 90c4fb72ce4..978df6f2823 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -6551,7 +6551,7 @@ static CPAccessResult e2h_access(CPUARMState *env, const ARMCPRegInfo *ri,
         return CP_ACCESS_OK;
     }
     if (!(arm_hcr_el2_eff(env) & HCR_E2H)) {
-        return CP_ACCESS_TRAP;
+        return CP_ACCESS_TRAP_UNCATEGORIZED;
     }
     return CP_ACCESS_OK;
 }
-- 
2.34.1