debian/patches/extra/0006-lsi53c895a-disable-reentrancy-detection-for-script-R.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Alexander Bulekov <alxndr@bu.edu>
   3 Date: Thu, 27 Apr 2023 17:10:10 -0400
   4 Subject: [PATCH] lsi53c895a: disable reentrancy detection for script RAM
   5
   6 As the code is designed to use the memory APIs to access the script ram,
   7 disable reentrancy checks for the pseudo-RAM ram_io MemoryRegion.
   8
   9 In the future, ram_io may be converted from an IO to a proper RAM MemoryRegion.
  10
  11 Reported-by: Fiona Ebner <f.ebner@proxmox.com>
  12 Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
  13 Reviewed-by: Thomas Huth <thuth@redhat.com>
  14 Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
  15 Message-Id: <20230427211013.2994127-6-alxndr@bu.edu>
  16 Signed-off-by: Thomas Huth <thuth@redhat.com>
  17 (cherry-picked from commit bfd6e7ae6a72b84e2eb9574f56e6ec037f05182c)
  18 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  19 ---
  20  hw/scsi/lsi53c895a.c | 6 ++++++
  21  1 file changed, 6 insertions(+)
  22
  23 diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
  24 index bbf32d3f73..17af67935f 100644
  25 --- a/hw/scsi/lsi53c895a.c
  26 +++ b/hw/scsi/lsi53c895a.c
  27 @@ -2313,6 +2313,12 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp)
  28      memory_region_init_io(&s->io_io, OBJECT(s), &lsi_io_ops, s,
  29                            "lsi-io", 256);
  30
  31 +    /*
  32 +     * Since we use the address-space API to interact with ram_io, disable the
  33 +     * re-entrancy guard.
  34 +     */
  35 +    s->ram_io.disable_reentrancy_guard = true;
  36 +
  37      address_space_init(&s->pci_io_as, pci_address_space_io(dev), "lsi-pci-io");
  38      qdev_init_gpio_out(d, &s->ext_irq, 1);
  39