On 6/27/22 11:11, Matheus Ferst wrote:
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 <laur...@vivier.eu>
Signed-off-by: Matheus Ferst <matheus.fe...@eldorado.org.br>
---
Reviewed-by: Daniel Henrique Barboza <danielhb...@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,
