linux-kernel - Re: [RFC PATCH v2 04/10] riscv: Add fixmap indices for GHES IRQ and SSE contexts

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Message-ID: <913ad5f8-89cf-475f-8ab4-3fa5e21d2941@rivosinc.com>
Date: Wed, 5 Nov 2025 09:41:46 +0100
From: Clément Léger <cleger@...osinc.com>
To: Himanshu Chauhan <hchauhan@...tanamicro.com>,
 linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-acpi@...r.kernel.org, linux-efi@...r.kernel.org,
 acpica-devel@...ts.linux.dev
Cc: paul.walmsley@...ive.com, palmer@...belt.com, lenb@...nel.org,
 james.morse@....com, tony.luck@...el.com, ardb@...nel.org, conor@...nel.org,
 robert.moore@...el.com, sunilvl@...tanamicro.com, apatel@...tanamicro.com
Subject: Re: [RFC PATCH v2 04/10] riscv: Add fixmap indices for GHES IRQ and
 SSE contexts



On 10/29/25 12:26, Himanshu Chauhan wrote:
> GHES error handling requires fixmap entries for IRQ notifications.
> Add fixmap indices for IRQ, SSE Low and High priority notifications.
> 
> Signed-off-by: Himanshu Chauhan <hchauhan@...tanamicro.com>
> ---
>  arch/riscv/include/asm/fixmap.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/riscv/include/asm/fixmap.h b/arch/riscv/include/asm/fixmap.h
> index 0a55099bb734..e874fd952286 100644
> --- a/arch/riscv/include/asm/fixmap.h
> +++ b/arch/riscv/include/asm/fixmap.h
> @@ -38,6 +38,14 @@ enum fixed_addresses {
>  	FIX_TEXT_POKE0,
>  	FIX_EARLYCON_MEM_BASE,
>  
> +#ifdef CONFIG_ACPI_APEI_GHES
> +	/* Used for GHES mapping from assorted contexts */
> +	FIX_APEI_GHES_IRQ,
> +#ifdef CONFIG_RISCV_SBI_SSE
> +	FIX_APEI_GHES_SSE_LOW_PRIORITY,
> +	FIX_APEI_GHES_SSE_HIGH_PRIORITY,
> +#endif /* CONFIG_RISCV_SBI_SSE */
> +#endif /* CONFIG_ACPI_APEI_GHES */
>  	__end_of_permanent_fixed_addresses,
>  	/*
>  	 * Temporary boot-time mappings, used by early_ioremap(),

Hi Himanshu,

Reviewed-By: Clément Léger <cleger@...osinc.com>

Thanks,

Clément