Re: [Qemu-devel] [PATCH v3 02/19] hw: acpi: Export ACPI build alignment API

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 29/10/18 18:01, Samuel Ortiz wrote:
> This is going to be needed by the Hardware-reduced ACPI routines.
> 
> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
> ---
>   hw/acpi/aml-build.c         | 8 ++++++++
>   hw/i386/acpi-build.c        | 8 --------
>   include/hw/acpi/aml-build.h | 2 ++
>   3 files changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> index 1e43cd736d..51b608432f 100644
> --- a/hw/acpi/aml-build.c
> +++ b/hw/acpi/aml-build.c
> @@ -1565,6 +1565,14 @@ unsigned acpi_data_len(GArray *table)
>       return table->len;
>   }
>   
> +void acpi_align_size(GArray *blob, unsigned align)
> +{
> +    /* Align size to multiple of given size. This reduces the chance
> +     * we need to change size in the future (breaking cross version migration).
> +     */
> +    g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
> +}
> +
>   void acpi_add_table(GArray *table_offsets, GArray *table_data)
>   {
>       uint32_t offset = table_data->len;
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index c8545238c4..1bf02b6a93 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -282,14 +282,6 @@ static void acpi_get_pci_holes(Range *hole, Range *hole64)
>                                                  NULL));
>   }
>   
> -static void acpi_align_size(GArray *blob, unsigned align)
> -{
> -    /* Align size to multiple of given size. This reduces the chance
> -     * we need to change size in the future (breaking cross version migration).
> -     */
> -    g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
> -}
> -
>   /* FACS */
>   static void
>   build_facs(GArray *table_data, BIOSLinker *linker)
> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> index 6c36903c0a..813f51317c 100644
> --- a/include/hw/acpi/aml-build.h
> +++ b/include/hw/acpi/aml-build.h
> @@ -6,6 +6,7 @@
>   
>   /* Reserve RAM space for tables: add another order of magnitude. */
>   #define ACPI_BUILD_TABLE_MAX_SIZE         0x200000
> +#define ACPI_BUILD_ALIGN_SIZE             0x1000

This definition doesn't seem used in this series.

>   
>   #define ACPI_BUILD_APPNAME6 "BOCHS "
>   #define ACPI_BUILD_APPNAME4 "BXPC"
> @@ -384,6 +385,7 @@ build_header(BIOSLinker *linker, GArray *table_data,
>                const char *oem_id, const char *oem_table_id);
>   void *acpi_data_push(GArray *table_data, unsigned size);
>   unsigned acpi_data_len(GArray *table);

With a 1 line documentation comment here:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> +void acpi_align_size(GArray *blob, unsigned align);
>   void acpi_add_table(GArray *table_offsets, GArray *table_data);
>   void acpi_build_tables_init(AcpiBuildTables *tables);
>   void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre);
>