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Re: [PATCH v10 7/8] raven: disable reentrancy detection for iomem
From: |
Darren Kenny |
Subject: |
Re: [PATCH v10 7/8] raven: disable reentrancy detection for iomem |
Date: |
Thu, 04 May 2023 13:03:07 +0100 |
On Thursday, 2023-04-27 at 17:10:12 -04, Alexander Bulekov wrote:
> 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>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
> ---
> hw/pci-host/raven.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
> index 072ffe3c5e..9a11ac4b2b 100644
> --- a/hw/pci-host/raven.c
> +++ b/hw/pci-host/raven.c
> @@ -294,6 +294,13 @@ 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);
> --
> 2.39.0
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