[PULL 09/30] target/ppc: fix exception error value in slbfee

[Daniel Henrique Barboza <danielhb413@gmail.com>]

From: Matheus Ferst <matheus.ferst@eldorado.org.br>

Testing on a POWER9 DD2.3, we observed that the Linux kernel delivers a
signal with si_code ILL_PRVOPC (5) when a userspace application tries to
use slbfee. To obtain this behavior on linux-user, we should use
POWERPC_EXCP_PRIV with POWERPC_EXCP_PRIV_OPC.

No functional change is intended for softmmu targets as
gen_hvpriv_exception uses the same 'exception' argument
(POWERPC_EXCP_HV_EMU) for raise_exception_*, and the powerpc_excp_*
methods do not use lower bits of the exception error code when handling
POWERPC_EXCP_{INVAL,PRIV}.

Reported-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220627141104.669152-3-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
 target/ppc/translate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 55f34eb490..d7e5670c20 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -5386,12 +5386,12 @@ static void gen_slbmfev(DisasContext *ctx)
 static void gen_slbfee_(DisasContext *ctx)
 {
 #if defined(CONFIG_USER_ONLY)
-    gen_inval_exception(ctx, POWERPC_EXCP_PRIV_REG);
+    gen_hvpriv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
 #else
     TCGLabel *l1, *l2;
 
     if (unlikely(ctx->pr)) {
-        gen_inval_exception(ctx, POWERPC_EXCP_PRIV_REG);
+        gen_hvpriv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
         return;
     }
     gen_helper_find_slb_vsid(cpu_gpr[rS(ctx->opcode)], cpu_env,
-- 
2.36.1