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raven: disable reentrancy detection for iomem

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As the code is designed for re-entrant calls from raven_io_ops to
pci-conf, mark raven_io_ops as reentrancy-safe.

Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20230427211013.2994127-8-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 6dad5a6810)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Alexander Bulekov 2023-04-27 17:10:12 -04:00 committed by Michael Tokarev
parent 65ad790287
commit 1247481530
1 changed files with 7 additions and 0 deletions
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7
hw/pci-host/raven.c
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@ -293,6 +293,13 @@ static void raven_pcihost_initfn(Object *obj)
memory_region_init(&s->pci_memory, obj, "pci-memory", 0x3f000000);
address_space_init(&s->pci_io_as, &s->pci_io, "raven-io");
/*
* Raven's raven_io_ops use the address-space API to access pci-conf-idx
* (which is also owned by the raven device). As such, mark the
* pci_io_non_contiguous as re-entrancy safe.
*/
s->pci_io_non_contiguous.disable_reentrancy_guard = true;
/* CPU address space */
memory_region_add_subregion(address_space_mem, PCI_IO_BASE_ADDR,
&s->pci_io);