From: Alexander Bulekov <alx...@bu.edu>
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>
[clg: mark opb_master_regs as re-entrancy safe also ]
Signed-off-by: Cédric Le Goater <c...@kaod.org>
Reviewed-by: Frederic Barrat <fbar...@linux.ibm.com>
Tested-by: Thomas Huth <th...@redhat.com>
Message-Id: <20230526073850.2772197-1-...@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb...@gmail.com>
---
hw/ppc/pnv_lpc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/ppc/pnv_lpc.c b/hw/ppc/pnv_lpc.c
index 01f44c19eb..605d390861 100644
--- a/hw/ppc/pnv_lpc.c
+++ b/hw/ppc/pnv_lpc.c
@@ -734,10 +734,13 @@ static void pnv_lpc_realize(DeviceState *dev, Error
**errp)
/* Create MMIO regions for LPC HC and OPB registers */
memory_region_init_io(&lpc->opb_master_regs, OBJECT(dev), &opb_master_ops,
lpc, "lpc-opb-master", LPC_OPB_REGS_OPB_SIZE);
+ lpc->opb_master_regs.disable_reentrancy_guard = true;
memory_region_add_subregion(&lpc->opb_mr, LPC_OPB_REGS_OPB_ADDR,
&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);
--
2.40.1
