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[PATCH] pnv_lpc: disable reentrancy detection for lpc-hc
From: |
Cédric Le Goater |
Subject: |
[PATCH] pnv_lpc: disable reentrancy detection for lpc-hc |
Date: |
Fri, 26 May 2023 09:38:50 +0200 |
From: Alexander Bulekov <alxndr@bu.edu>
As lpc-hc is designed for re-entrant calls from xscom, mark it
re-entrancy safe.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
[clg: mark opb_master_regs as re-entrancy safe also ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
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 01f44c19ebba..605d3908617a 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
- [PATCH] pnv_lpc: disable reentrancy detection for lpc-hc,
Cédric Le Goater <=