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Date: Tue, 26 Mar 2024 10:53:39 -0700
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org
Cc: "Rafael J. Wysocki" <rafael@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>,
 Adrian Hunter <adrian.hunter@...el.com>,
 Elena Reshetova <elena.reshetova@...el.com>,
 Jun Nakajima <jun.nakajima@...el.com>,
 Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Tom Lendacky <thomas.lendacky@....com>, "Kalra, Ashish"
 <ashish.kalra@....com>, Sean Christopherson <seanjc@...gle.com>,
 "Huang, Kai" <kai.huang@...el.com>, Baoquan He <bhe@...hat.com>,
 kexec@...ts.infradead.org, linux-coco@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCHv9 17/17] ACPI: tables: Print MULTIPROC_WAKEUP when MADT is
 parsed


On 3/25/24 3:39 AM, Kirill A. Shutemov wrote:
> When MADT is parsed, print MULTIPROC_WAKEUP information:
>
> ACPI: MP Wakeup (version[1], mailbox[0x7fffd000], reset[0x7fffe068])
>
> This debug information will be very helpful during bring up.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Reviewed-by: Baoquan He <bhe@...hat.com>
> ---

Looks good to me.

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>

>  drivers/acpi/tables.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> index b976e5fc3fbc..9e1b01c35070 100644
> --- a/drivers/acpi/tables.c
> +++ b/drivers/acpi/tables.c
> @@ -198,6 +198,20 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
>  		}
>  		break;
>  
> +	case ACPI_MADT_TYPE_MULTIPROC_WAKEUP:
> +		{
> +			struct acpi_madt_multiproc_wakeup *p =
> +				(struct acpi_madt_multiproc_wakeup *)header;
> +			u64 reset_vector = 0;
> +
> +			if (p->version >= ACPI_MADT_MP_WAKEUP_VERSION_V1)
> +				reset_vector = p->reset_vector;
> +
> +			pr_debug("MP Wakeup (version[%d], mailbox[%#llx], reset[%#llx])\n",
> +				 p->version, p->mailbox_address, reset_vector);
> +		}
> +		break;
> +
>  	case ACPI_MADT_TYPE_CORE_PIC:
>  		{
>  			struct acpi_madt_core_pic *p = (struct acpi_madt_core_pic *)header;

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer


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