34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Alexander Bulekov <alxndr@bu.edu>
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Date: Mon, 13 Mar 2023 04:24:17 -0400
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Subject: [PATCH] lsi53c895a: disable reentrancy detection for script RAM
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As the code is designed to use the memory APIs to access the script ram,
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disable reentrancy checks for the pseudo-RAM ram_io MemoryRegion.
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In the future, ram_io may be converted from an IO to a proper RAM MemoryRegion.
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Reported-by: Fiona Ebner <f.ebner@proxmox.com>
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Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
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---
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hw/scsi/lsi53c895a.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
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index 50979640c3..894b9311ac 100644
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--- a/hw/scsi/lsi53c895a.c
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+++ b/hw/scsi/lsi53c895a.c
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@@ -2302,6 +2302,12 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp)
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memory_region_init_io(&s->io_io, OBJECT(s), &lsi_io_ops, s,
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"lsi-io", 256);
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+ /*
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+ * Since we use the address-space API to interact with ram_io, disable the
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+ * re-entrancy guard.
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+ */
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+ s->ram_io.disable_reentrancy_guard = true;
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+
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address_space_init(&s->pci_io_as, pci_address_space_io(dev), "lsi-pci-io");
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qdev_init_gpio_out(d, &s->ext_irq, 1);
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