[PATCH v3 4/5] hvf: arm: Do not advance PC when raising an exception

[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.

Fixes: a2260983c655 ("hvf: arm: Add support for GICv3")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 target/arm/hvf/hvf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c
index ef9bc42738d0..eb090e67a2f8 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:

-- 
2.45.2