38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Alexander Bulekov <alxndr@bu.edu>
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Date: Thu, 27 Apr 2023 17:10:11 -0400
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Subject: [PATCH] bcm2835_property: disable reentrancy detection for iomem
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As the code is designed for re-entrant calls from bcm2835_property to
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bcm2835_mbox and back into bcm2835_property, mark iomem as
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reentrancy-safe.
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Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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Message-Id: <20230427211013.2994127-7-alxndr@bu.edu>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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(cherry-picked from commit 985c4a4e547afb9573b6bd6843d20eb2c3d1d1cd)
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Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
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---
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hw/misc/bcm2835_property.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/hw/misc/bcm2835_property.c b/hw/misc/bcm2835_property.c
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index 890ae7bae5..de056ea2df 100644
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--- a/hw/misc/bcm2835_property.c
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+++ b/hw/misc/bcm2835_property.c
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@@ -382,6 +382,13 @@ static void bcm2835_property_init(Object *obj)
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memory_region_init_io(&s->iomem, OBJECT(s), &bcm2835_property_ops, s,
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TYPE_BCM2835_PROPERTY, 0x10);
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+
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+ /*
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+ * bcm2835_property_ops call into bcm2835_mbox, which in-turn reads from
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+ * iomem. As such, mark iomem as re-entracy safe.
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+ */
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+ s->iomem.disable_reentrancy_guard = true;
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+
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sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
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sysbus_init_irq(SYS_BUS_DEVICE(s), &s->mbox_irq);
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}
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