From: Leandro Lupori <leandro.lup...@eldorado.org.br>
Fix Instruction Storage Interrupt (ISI) fault cause for Radix MMU,
when caused by missing PAGE_EXEC permission, to be
SRR1_NOEXEC_GUARD instead of DSISR_PROTFAULT.
This matches POWER9 hardware behavior.
Fixes: d5fee0bbe68 ("target/ppc: Implement ISA V3.00 radix page fault handler")
Signed-off-by: Leandro Lupori <leandro.lup...@eldorado.org.br>
Message-Id: <20220309192756.145283-1-leandro.lup...@eldorado.org.br>
Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
target/ppc/mmu-radix64.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c
index 67c38f065ba2..5414fd63c10f 100644
--- a/target/ppc/mmu-radix64.c
+++ b/target/ppc/mmu-radix64.c
@@ -204,7 +204,8 @@ static bool ppc_radix64_check_prot(PowerPCCPU *cpu,
MMUAccessType access_type,
/* Check if requested access type is allowed */
need_prot = prot_for_access_type(access_type);
if (need_prot & ~*prot) { /* Page Protected for that Access */
- *fault_cause |= DSISR_PROTFAULT;
+ *fault_cause |= access_type == MMU_INST_FETCH ? SRR1_NOEXEC_GUARD :
+ DSISR_PROTFAULT;
return true;
}
--
2.34.1
