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From: Thomas Huth <thuth@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>, Alexander Bulekov <alxndr@bu.edu>
Cc: Fam Zheng <fam@euphon.net>,
	qemu-devel@nongnu.org, Fiona Ebner <f.ebner@proxmox.com>,
	Darren Kenny <darren.kenny@oracle.com>,
	Thomas Huth <thuth@redhat.com>
Subject: [PATCH] lsi53c895a: disable reentrancy detection for MMIO region, too
Date: Tue, 16 May 2023 11:05:56 +0200	[thread overview]
Message-ID: <20230516090556.553813-1-thuth@redhat.com> (raw)

While trying to use a SCSI disk on the LSI controller with an
older version of Fedora (25), I'm getting:

 qemu: warning: Blocked re-entrant IO on MemoryRegion: lsi-mmio at addr: 0x34

and the SCSI controller is not usable. Seems like we have to
disable the reentrancy checker for the MMIO region, too, to
get this working again.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 hw/scsi/lsi53c895a.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index db27872963..048436352b 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -2307,6 +2307,7 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp)
      * re-entrancy guard.
      */
     s->ram_io.disable_reentrancy_guard = true;
+    s->mmio_io.disable_reentrancy_guard = true;
 
     address_space_init(&s->pci_io_as, pci_address_space_io(dev), "lsi-pci-io");
     qdev_init_gpio_out(d, &s->ext_irq, 1);
-- 
2.31.1



             reply	other threads:[~2023-05-16  9:06 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-16  9:05 Thomas Huth [this message]
2023-05-16  9:27 ` [PATCH] lsi53c895a: disable reentrancy detection for MMIO region, too Alexander Bulekov
2023-05-16 10:07   ` Thomas Huth

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