Re: [PATCH v19 3/5] ACPI: Add APEI GHES table generation support

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On Tue, 15 Oct 2019 at 15:02, Xiang Zheng <zhengxiang9@xxxxxxxxxx> wrote:
>
> From: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
>
> This patch implements APEI GHES Table generation via fw_cfg blobs. Now
> it only supports ARMv8 SEA, a type of GHESv2 error source. Afterwards,
> we can extend the supported types if needed. For the CPER section,
> currently it is memory section because kernel mainly wants userspace to
> handle the memory errors.
>
> This patch follows the spec ACPI 6.2 to build the Hardware Error Source
> table. For more detailed information, please refer to document:
> docs/specs/acpi_hest_ghes.rst
>
> Suggested-by: Laszlo Ersek <lersek@xxxxxxxxxx>
> Signed-off-by: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
> Signed-off-by: Xiang Zheng <zhengxiang9@xxxxxxxxxx>

> +    /* Error Status Address */
> +    build_append_gas(table_data, AML_SYSTEM_MEMORY, 0x40, 0,
> +                     4 /* QWord access */, 0);

Hi; this doesn't seem to compile with clang:

/home/petmay01/linaro/qemu-from-laptop/qemu/hw/acpi/acpi_ghes.c:330:34:
error: implicit conversion from
      enumeration type 'AmlRegionSpace' to different enumeration type
'AmlAddressSpace'
      [-Werror,-Wenum-conversion]
    build_append_gas(table_data, AML_SYSTEM_MEMORY, 0x40, 0,
    ~~~~~~~~~~~~~~~~             ^~~~~~~~~~~~~~~~~
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/acpi/acpi_ghes.c:351:34:
error: implicit conversion from
      enumeration type 'AmlRegionSpace' to different enumeration type
'AmlAddressSpace'
      [-Werror,-Wenum-conversion]
    build_append_gas(table_data, AML_SYSTEM_MEMORY, 0x40, 0,
    ~~~~~~~~~~~~~~~~             ^~~~~~~~~~~~~~~~~
2 errors generated.

Should these be AML_AS_SYSTEM_MEMORY, or should the build_append_gas()
function be taking an AmlRegionSpace rather than an AmlAddressSpace ?

thanks
-- PMM



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