linux-kernel - [RFC PATCH v1 04/10] riscv: Add fixmap indices for GHES IRQ and SSE contexts

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Message-ID: <20250227123628.2931490-5-hchauhan@ventanamicro.com>
Date: Thu, 27 Feb 2025 18:06:22 +0530
From: Himanshu Chauhan <hchauhan@...tanamicro.com>
To: 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,
	cleger@...osinc.com,
	robert.moore@...el.com,
	sunilvl@...tanamicro.com,
	apatel@...tanamicro.com,
	Himanshu Chauhan <hchauhan@...tanamicro.com>
Subject: [RFC PATCH v1 04/10] riscv: Add fixmap indices for GHES IRQ and SSE contexts

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..fa3a0ec0c55c 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_SSE
+	FIX_APEI_GHES_SSE_LOW_PRIORITY,
+	FIX_APEI_GHES_SSE_HIGH_PRIORITY,
+#endif /* CONFIG_RISCV_SSE */
+#endif /* CONFIG_ACPI_APEI_GHES */
 	__end_of_permanent_fixed_addresses,
 	/*
 	 * Temporary boot-time mappings, used by early_ioremap(),
-- 
2.43.0