Hello Alexander On 5/11/23 10:53, Alexander Bulekov wrote:
As lpc-hc is designed for re-entrant calls from xscom, mark it re-entrancy safe.Reported-by: Thomas Huth <th...@redhat.com> Signed-off-by: Alexander Bulekov <alx...@bu.edu> --- hw/ppc/pnv_lpc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/ppc/pnv_lpc.c b/hw/ppc/pnv_lpc.c index 01f44c19eb..67fd049a7f 100644 --- a/hw/ppc/pnv_lpc.c +++ b/hw/ppc/pnv_lpc.c @@ -738,6 +738,8 @@ static void pnv_lpc_realize(DeviceState *dev, Error **errp) &lpc->opb_master_regs); memory_region_init_io(&lpc->lpc_hc_regs, OBJECT(dev), &lpc_hc_ops, lpc, "lpc-hc", LPC_HC_REGS_OPB_SIZE); + /* xscom writes to lpc-hc. As such mark lpc-hc re-entrancy safe */ + lpc->lpc_hc_regs.disable_reentrancy_guard = true; memory_region_add_subregion(&lpc->opb_mr, LPC_HC_REGS_OPB_ADDR, &lpc->lpc_hc_regs);
The warning changed : qemu-system-ppc64: warning: Blocked re-entrant IO on MemoryRegion: lpc-opb-master at addr: 0x8 I will take a look unless you know exactly what to do. Thanks, C.
