linux-kernel - Re: [PATCH v2 03/15] acpi/ghes: simplify the per-arch caller to build HEST table

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Message-ID: <20241002153001.22324ae1@imammedo.users.ipa.redhat.com>
Date: Wed, 2 Oct 2024 15:30:01 +0200
From: Igor Mammedov <imammedo@...hat.com>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc: "Michael S. Tsirkin" <mst@...hat.com>, Ani Sinha <anisinha@...hat.com>,
 Dongjiu Geng <gengdongjiu1@...il.com>, Peter Maydell
 <peter.maydell@...aro.org>, Shannon Zhao <shannon.zhaosl@...il.com>,
 linux-kernel@...r.kernel.org, qemu-arm@...gnu.org, qemu-devel@...gnu.org,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: Re: [PATCH v2 03/15] acpi/ghes: simplify the per-arch caller to
 build HEST table

On Tue,  1 Oct 2024 09:03:40 +0200
Mauro Carvalho Chehab <mchehab+huawei@...nel.org> wrote:

> The GHES driver requires not only a HEST table, but also a
> separate firmware file to store Error Structure records.
> It can't do one without the other.
> 
> Simplify the caller logic for it to require one function.

> This prepares for further changes where the HEST table
> generation will become more generic.

I'd drop this

> No functional changes.
> 
> 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>

> 
> ---
> 
> Changes from v10:
> - Removed the logic which associates notification and source
>   ID. This will be placed on a separate patch.
> 
> Changes from v8:
> - Non-rename/cleanup changes merged altogether;
> - source ID is now more generic, defined per guest target.
>   That should make easier to add support for 86.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> ---
>  hw/acpi/ghes.c           | 7 +++++--
>  hw/arm/virt-acpi-build.c | 5 ++---
>  include/hw/acpi/ghes.h   | 4 ++--
>  3 files changed, 9 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
> index e66f3be1502b..4a6c45bcb4be 100644
> --- a/hw/acpi/ghes.c
> +++ b/hw/acpi/ghes.c
> @@ -233,7 +233,7 @@ static int acpi_ghes_record_mem_error(uint64_t error_block_address,
>   * Initialize "etc/hardware_errors" and "etc/hardware_errors_addr" fw_cfg blobs.
>   * See docs/specs/acpi_hest_ghes.rst for blobs format.
>   */
> -void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker)
> +static void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker)
>  {
>      int i, error_status_block_offset;
>  
> @@ -356,12 +356,15 @@ static void build_ghes_v2(GArray *table_data, int source_id, BIOSLinker *linker)
>  }
>  
>  /* Build Hardware Error Source Table */
> -void acpi_build_hest(GArray *table_data, BIOSLinker *linker,
> +void acpi_build_hest(GArray *table_data, GArray *hardware_errors,
> +                     BIOSLinker *linker,
>                       const char *oem_id, const char *oem_table_id)
>  {
>      AcpiTable table = { .sig = "HEST", .rev = 1,
>                          .oem_id = oem_id, .oem_table_id = oem_table_id };
>  
> +    build_ghes_error_table(hardware_errors, linker);
> +
>      acpi_table_begin(&table, table_data);
>  
>      /* Error Source Count */
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index f76fb117adff..bafd9a56c217 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -943,10 +943,9 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
>      build_dbg2(tables_blob, tables->linker, vms);
>  
>      if (vms->ras) {
> -        build_ghes_error_table(tables->hardware_errors, tables->linker);
>          acpi_add_table(table_offsets, tables_blob);
> -        acpi_build_hest(tables_blob, tables->linker, vms->oem_id,
> -                        vms->oem_table_id);
> +        acpi_build_hest(tables_blob, tables->hardware_errors, tables->linker,
> +                        vms->oem_id, vms->oem_table_id);
>      }
>  
>      if (ms->numa_state->num_nodes > 0) {
> diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h
> index 59e3b8fb24b9..20016c226d1f 100644
> --- a/include/hw/acpi/ghes.h
> +++ b/include/hw/acpi/ghes.h
> @@ -68,8 +68,8 @@ typedef struct AcpiGhesState {
>      bool present; /* True if GHES is present at all on this board */
>  } AcpiGhesState;
>  
> -void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker);
> -void acpi_build_hest(GArray *table_data, BIOSLinker *linker,
> +void acpi_build_hest(GArray *table_data, GArray *hardware_errors,
> +                     BIOSLinker *linker,
>                       const char *oem_id, const char *oem_table_id);
>  void acpi_ghes_add_fw_cfg(AcpiGhesState *vms, FWCfgState *s,
>                            GArray *hardware_errors);