linux-kernel - Re: [PATCH v10 04/21] acpi/ghes: simplify acpi_ghes_record

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Message-ID: <20240917112828.514d9255@imammedo.users.ipa.redhat.com>
Date: Tue, 17 Sep 2024 11:28:28 +0200
From: Igor Mammedov <imammedo@...hat.com>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, Shiju Jose
 <shiju.jose@...wei.com>, "Michael S. Tsirkin" <mst@...hat.com>, Ani Sinha
 <anisinha@...hat.com>, Dongjiu Geng <gengdongjiu1@...il.com>,
 linux-kernel@...r.kernel.org, qemu-arm@...gnu.org, qemu-devel@...gnu.org
Subject: Re: [PATCH v10 04/21] acpi/ghes: simplify acpi_ghes_record_errors()
 code

On Sat, 14 Sep 2024 08:13:25 +0200
Mauro Carvalho Chehab <mchehab+huawei@...nel.org> wrote:

> if physical_address is not defined, just return with an error
> set.

no need to mention that, as it's what does now.

> 
> That reduces the ident of the function and prepares it for
> the next changes.
> 
> No functional changes.

this is enough to describe the change.

> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

Reviewed-by: Igor Mammedov <imammedo@...hat.com>

> ---
>  hw/acpi/ghes.c | 56 ++++++++++++++++++++++++++------------------------
>  1 file changed, 29 insertions(+), 27 deletions(-)
> 
> diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
> index 35f793401d06..17b7d9e10f3e 100644
> --- a/hw/acpi/ghes.c
> +++ b/hw/acpi/ghes.c
> @@ -417,40 +417,42 @@ int acpi_ghes_record_errors(uint8_t source_id, uint64_t physical_address)
>  
>      start_addr = le64_to_cpu(ags->ghes_addr_le);
>  
> -    if (physical_address) {
> +    if (!physical_address) {
> +        return -1;
> +    }
>  
> -        if (source_id < ACPI_GHES_ERROR_SOURCE_COUNT) {
> -            start_addr += source_id * sizeof(uint64_t);
> -        }
> +    if (source_id < ACPI_GHES_ERROR_SOURCE_COUNT) {
> +        start_addr += source_id * sizeof(uint64_t);
> +    }
>  
> -        cpu_physical_memory_read(start_addr, &error_block_addr,
> -                                 sizeof(error_block_addr));
> +    cpu_physical_memory_read(start_addr, &error_block_addr,
> +                                sizeof(error_block_addr));
>  
> -        error_block_addr = le64_to_cpu(error_block_addr);
> +    error_block_addr = le64_to_cpu(error_block_addr);
>  
> -        read_ack_register_addr = start_addr +
> -            ACPI_GHES_ERROR_SOURCE_COUNT * sizeof(uint64_t);
> +    read_ack_register_addr = start_addr +
> +        ACPI_GHES_ERROR_SOURCE_COUNT * sizeof(uint64_t);
>  
> -        cpu_physical_memory_read(read_ack_register_addr,
> -                                 &read_ack_register, sizeof(read_ack_register));
> +    cpu_physical_memory_read(read_ack_register_addr,
> +                                &read_ack_register, sizeof(read_ack_register));
>  
> -        /* zero means OSPM does not acknowledge the error */
> -        if (!read_ack_register) {
> -            error_report("OSPM does not acknowledge previous error,"
> -                " so can not record CPER for current error anymore");
> -        } else if (error_block_addr) {
> -            read_ack_register = cpu_to_le64(0);
> -            /*
> -             * Clear the Read Ack Register, OSPM will write it to 1 when
> -             * it acknowledges this error.
> -             */
> -            cpu_physical_memory_write(read_ack_register_addr,
> -                &read_ack_register, sizeof(uint64_t));
> +    /* zero means OSPM does not acknowledge the error */
> +    if (!read_ack_register) {
> +        error_report("OSPM does not acknowledge previous error,"
> +            " so can not record CPER for current error anymore");
> +    } else if (error_block_addr) {
> +        read_ack_register = cpu_to_le64(0);
> +        /*
> +         * Clear the Read Ack Register, OSPM will write it to 1 when
> +         * it acknowledges this error.
> +         */
> +        cpu_physical_memory_write(read_ack_register_addr,
> +            &read_ack_register, sizeof(uint64_t));
>  
> -            ret = acpi_ghes_record_mem_error(error_block_addr,
> -                                             physical_address);
> -        } else
> -            error_report("can not find Generic Error Status Block");
> +        ret = acpi_ghes_record_mem_error(error_block_addr,
> +                                            physical_address);
> +    } else {
> +        error_report("can not find Generic Error Status Block");
>      }
>  
>      return ret;