linux-kernel - Re: [PATCH v9 12/20] acpi/generic_event_device: add logic to detect if HEST addr is available

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Message-ID: <20250528174212.2823d3de@imammedo.users.ipa.redhat.com>
Date: Wed, 28 May 2025 17:42:12 +0200
From: Igor Mammedov <imammedo@...hat.com>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc: "Michael S . Tsirkin" <mst@...hat.com>, Jonathan Cameron
 <Jonathan.Cameron@...wei.com>, Shiju Jose <shiju.jose@...wei.com>,
 qemu-arm@...gnu.org, qemu-devel@...gnu.org, Philippe Mathieu-Daudé <philmd@...aro.org>, Ani Sinha
 <anisinha@...hat.com>, Eduardo Habkost <eduardo@...kost.net>, Marcel
 Apfelbaum <marcel.apfelbaum@...il.com>, Peter Maydell
 <peter.maydell@...aro.org>, Shannon Zhao <shannon.zhaosl@...il.com>, Yanan
 Wang <wangyanan55@...wei.com>, Zhao Liu <zhao1.liu@...el.com>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 12/20] acpi/generic_event_device: add logic to detect
 if HEST addr is available

On Tue, 20 May 2025 08:41:31 +0200
Mauro Carvalho Chehab <mchehab+huawei@...nel.org> wrote:

> Create a new property (x-has-hest-addr) and use it to detect if
> the GHES table offsets can be calculated from the HEST address
> (qemu 10.0 and upper) or via the legacy way via an offset obtained
> from the hardware_errors firmware file.


it doesn't apply to current master anymore


> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Reviewed-by: Igor Mammedov <imammedo@...hat.com>
> ---
>  hw/acpi/generic_event_device.c |  2 ++
>  hw/arm/virt-acpi-build.c       | 18 ++++++++++++++++--
>  hw/core/machine.c              |  5 ++++-
>  3 files changed, 22 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c
> index d292f61b4e41..3cf9dab0d01a 100644
> --- a/hw/acpi/generic_event_device.c
> +++ b/hw/acpi/generic_event_device.c
> @@ -318,6 +318,8 @@ static void acpi_ged_send_event(AcpiDeviceIf *adev, AcpiEventStatusBits ev)
>  
>  static const Property acpi_ged_properties[] = {
>      DEFINE_PROP_UINT32("ged-event", AcpiGedState, ged_event_bitmap, 0),
> +    DEFINE_PROP_BOOL("x-has-hest-addr", AcpiGedState,
> +                     ghes_state.use_hest_addr, false),
>  };
>  
>  static const VMStateDescription vmstate_memhp_state = {
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index da3ebf403ef9..3126234e657d 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -893,6 +893,10 @@ static const AcpiNotificationSourceId hest_ghes_notify[] = {
>      { ACPI_HEST_SRC_ID_SYNC, ACPI_GHES_NOTIFY_SEA },
>  };
>  
> +static const AcpiNotificationSourceId hest_ghes_notify_10_0[] = {
> +    { ACPI_HEST_SRC_ID_SYNC, ACPI_GHES_NOTIFY_SEA },
> +};
> +
>  static
>  void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
>  {
> @@ -947,15 +951,25 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
>  
>      if (vms->ras) {
>          AcpiGedState *acpi_ged_state;
> +        static const AcpiNotificationSourceId *notify;
> +        unsigned int notify_sz;
>          AcpiGhesState *ags;
>  
>          acpi_ged_state = ACPI_GED(vms->acpi_dev);
>          ags = &acpi_ged_state->ghes_state;
>          if (ags) {
>              acpi_add_table(table_offsets, tables_blob);
> +
> +            if (!ags->use_hest_addr) {
> +                notify = hest_ghes_notify_10_0;
> +                notify_sz = ARRAY_SIZE(hest_ghes_notify_10_0);
> +            } else {
> +                notify = hest_ghes_notify;
> +                notify_sz = ARRAY_SIZE(hest_ghes_notify);
> +            }
> +
>              acpi_build_hest(ags, tables_blob, tables->hardware_errors,
> -                            tables->linker, hest_ghes_notify,
> -                            ARRAY_SIZE(hest_ghes_notify),
> +                            tables->linker, notify, notify_sz,
>                              vms->oem_id, vms->oem_table_id);
>          }
>      }
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index b8ae155dfa11..dfd36cf063c7 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -35,9 +35,12 @@
>  #include "hw/virtio/virtio-pci.h"
>  #include "hw/virtio/virtio-net.h"
>  #include "hw/virtio/virtio-iommu.h"
> +#include "hw/acpi/generic_event_device.h"
>  #include "audio/audio.h"
>  
> -GlobalProperty hw_compat_10_0[] = {};
> +GlobalProperty hw_compat_10_0[] = {
> +    { TYPE_ACPI_GED, "x-has-hest-addr", "false" },
> +};
>  const size_t hw_compat_10_0_len = G_N_ELEMENTS(hw_compat_10_0);
>  
>  GlobalProperty hw_compat_9_2[] = {