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[PULL,26/26] hvf: arm: Do not advance PC when raising an exception

Message ID 20240718132028.697927-27-peter.maydell@linaro.org (mailing list archive)
State New, archived
Headers show
Series [PULL,01/26] target/arm: Fix handling of LDAPR/STLR with negative offset | expand

Commit Message

Peter Maydell July 18, 2024, 1:20 p.m. UTC 
From: Akihiko Odaki <akihiko.odaki@daynix.com>

hvf did not advance PC when raising an exception for most unhandled
system registers, but it mistakenly advanced PC when raising an
exception for GICv3 registers.

Cc: qemu-stable@nongnu.org
Fixes: a2260983c655 ("hvf: arm: Add support for GICv3")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20240716-pmu-v3-4-8c7c1858a227@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/hvf/hvf.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c
index ef9bc42738d..eb090e67a2f 100644
--- a/target/arm/hvf/hvf.c
+++ b/target/arm/hvf/hvf.c
@@ -1278,6 +1278,7 @@  static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint32_t rt)
         /* Call the TCG sysreg handler. This is only safe for GICv3 regs. */
         if (!hvf_sysreg_read_cp(cpu, reg, &val)) {
             hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized());
+            return 1;
         }
         break;
     case SYSREG_DBGBVR0_EL1: