debian/patches/extra/0008-raven-disable-reentrancy-detection-for-iomem.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Alexander Bulekov <alxndr@bu.edu>
   3 Date: Thu, 27 Apr 2023 17:10:12 -0400
   4 Subject: [PATCH] raven: disable reentrancy detection for iomem
   5
   6 As the code is designed for re-entrant calls from raven_io_ops to
   7 pci-conf, mark raven_io_ops as reentrancy-safe.
   8
   9 Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
  10 Message-Id: <20230427211013.2994127-8-alxndr@bu.edu>
  11 Signed-off-by: Thomas Huth <thuth@redhat.com>
  12 (cherry-picked from commit 6dad5a6810d9c60ca320d01276f6133bbcfa1fc7)
  13 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  14 ---
  15  hw/pci-host/raven.c | 7 +++++++
  16  1 file changed, 7 insertions(+)
  17
  18 diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
  19 index 072ffe3c5e..9a11ac4b2b 100644
  20 --- a/hw/pci-host/raven.c
  21 +++ b/hw/pci-host/raven.c
  22 @@ -294,6 +294,13 @@ static void raven_pcihost_initfn(Object *obj)
  23      memory_region_init(&s->pci_memory, obj, "pci-memory", 0x3f000000);
  24      address_space_init(&s->pci_io_as, &s->pci_io, "raven-io");
  25
  26 +    /*
  27 +     * Raven's raven_io_ops use the address-space API to access pci-conf-idx
  28 +     * (which is also owned by the raven device). As such, mark the
  29 +     * pci_io_non_contiguous as re-entrancy safe.
  30 +     */
  31 +    s->pci_io_non_contiguous.disable_reentrancy_guard = true;
  32 +
  33      /* CPU address space */
  34      memory_region_add_subregion(address_space_mem, PCI_IO_BASE_ADDR,
  35                                  &s->pci_io);