Re: [RFC PATCH v3 6/7] hw/acpi/ich9: Set ACPI PCI hot-plug as default

[Igor Mammedov]

On Thu, 24 Sep 2020 09:00:12 +0200
Julia Suvorova <jusual@redhat.com> wrote:

> Signed-off-by: Julia Suvorova <jusual@redhat.com>

I'd drop this patch for now.
mgmt can turn it on for Windows guests to workaround
its native hotplug issues.

> ---
>  hw/acpi/ich9.c | 2 +-
>  hw/i386/pc.c   | 1 +
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
> index 987f23e388..c67c20de4e 100644
> --- a/hw/acpi/ich9.c
> +++ b/hw/acpi/ich9.c
> @@ -425,7 +425,7 @@ void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs 
> *pm)
>      pm->disable_s3 = 0;
>      pm->disable_s4 = 0;
>      pm->s4_val = 2;
> -    pm->use_acpi_hotplug_bridge = false;
> +    pm->use_acpi_hotplug_bridge = true;
>  
>      object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
>                                     &pm->pm_io_base, OBJ_PROP_FLAG_READ);
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index b55369357e..5de4475570 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -101,6 +101,7 @@ GlobalProperty pc_compat_5_1[] = {};
>  const size_t pc_compat_5_1_len = G_N_ELEMENTS(pc_compat_5_1);
>  
>  GlobalProperty pc_compat_5_0[] = {
> +    { "ICH9-LPC", "acpi-pci-hotplug-with-bridge-support", "off" },
>  };
>  const size_t pc_compat_5_0_len = G_N_ELEMENTS(pc_compat_5_0);
>