linux-kernel - Re: [PATCH v1 1/1] remoteproc: qcom: pas: Coredump elf class to elf64

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Message-ID: <affcec97-6cc2-aa0a-103d-efa8ad3b68bf@quicinc.com>
Date:   Fri, 10 Mar 2023 09:34:10 +0530
From:   Sibi Sankar <quic_sibis@...cinc.com>
To:     Gokul krishna Krishnakumar <quic_gokukris@...cinc.com>,
        <linux-remoteproc@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Satya Durga Srinivasu Prabhala <quic_satyap@...cinc.com>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        "Elliot Berman" <quic_eberman@...cinc.com>,
        Guru Das Srinagesh <quic_gurus@...cinc.com>,
        Melody Olvera <quic_molvera@...cinc.com>
Subject: Re: [PATCH v1 1/1] remoteproc: qcom: pas: Coredump elf class to elf64

Hey Gokul,

Thanks for the patch.

On 3/9/23 05:40, Gokul krishna Krishnakumar wrote:
> This change adds a new initialization param which modifies the elf
> class accordingly. Some of the subsystem dump analysis tools need
> the elf class to be elf64.
> 

https://lore.kernel.org/lkml/8dea333d-544d-7c07-d560-a1a9c3a38ddc@quicinc.com/

This patch was already sent upstream a while back ^^. IIRC the firmware
certainly aren't 64 bit elfs and dump analysis tools don't really care 
as long the coredump contains section headers.

- Sibi

> Signed-off-by: Gokul krishna Krishnakumar <quic_gokukris@...cinc.com>
> ---
>   drivers/remoteproc/qcom_q6v5_pas.c | 9 ++++++++-
>   1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
> index 0871108fb4dc..17ce3177be7b 100644
> --- a/drivers/remoteproc/qcom_q6v5_pas.c
> +++ b/drivers/remoteproc/qcom_q6v5_pas.c
> @@ -39,6 +39,7 @@ struct adsp_data {
>   	int pas_id;
>   	int dtb_pas_id;
>   	unsigned int minidump_id;
> +	bool uses_elf64;
>   	bool auto_boot;
>   	bool decrypt_shutdown;
>   
> @@ -681,7 +682,10 @@ static int adsp_probe(struct platform_device *pdev)
>   	}
>   
>   	rproc->auto_boot = desc->auto_boot;
> -	rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
> +	if (desc->uses_elf64)
> +		rproc_coredump_set_elf_info(rproc, ELFCLASS64, EM_NONE);
> +	else
> +		rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
>   
>   	adsp = (struct qcom_adsp *)rproc->priv;
>   	adsp->dev = &pdev->dev;
> @@ -1126,6 +1130,7 @@ static const struct adsp_data sm8550_adsp_resource = {
>   	.pas_id = 1,
>   	.dtb_pas_id = 0x24,
>   	.minidump_id = 5,
> +	.uses_elf64 = true,
>   	.auto_boot = true,
>   	.proxy_pd_names = (char*[]){
>   		"lcx",
> @@ -1145,6 +1150,7 @@ static const struct adsp_data sm8550_cdsp_resource = {
>   	.pas_id = 18,
>   	.dtb_pas_id = 0x25,
>   	.minidump_id = 7,
> +	.uses_elf64 = true,
>   	.auto_boot = true,
>   	.proxy_pd_names = (char*[]){
>   		"cx",
> @@ -1165,6 +1171,7 @@ static const struct adsp_data sm8550_mpss_resource = {
>   	.pas_id = 4,
>   	.dtb_pas_id = 0x26,
>   	.minidump_id = 3,
> +	.uses_elf64 = true,
>   	.auto_boot = false,
>   	.decrypt_shutdown = true,
>   	.proxy_pd_names = (char*[]){