Thread (26 messages) 26 messages, 9 authors, 2017-11-09

[RFC/RFT PATCH 2/6] x86/mm/fixmap: Add GHES fixmap entries

From: Borislav Petkov <hidden>
Date: 2017-10-31 19:09:55
Also in: linux-acpi, lkml

On Tue, Oct 31, 2017 at 03:38:28PM +0000, James Morse wrote:
quoted hunk ↗ jump to hunk
GHES is switching to use fixmap for its dynamic mapping of CPER records,
to avoid using ioremap_page_range() in IRQ/NMI context.

Signed-off-by: James Morse <james.morse@arm.com>
---
 arch/x86/include/asm/fixmap.h | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index dcd9fb55e679..be3cc32db7f0 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -104,6 +104,10 @@ enum fixed_addresses {
 	FIX_GDT_REMAP_BEGIN,
 	FIX_GDT_REMAP_END = FIX_GDT_REMAP_BEGIN + NR_CPUS - 1,
 
+	/* Used for GHES mapping from assorted contexts */
+	FIX_APEI_GHES_IRQ,
+	FIX_APEI_GHES_NMI,
Maybe I'm missing something but shouldn't those two be inside
CONFIG_ACPI_APEI_GHES ifdeffery?

Ditto for the ARM side.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imend?rffer, Jane Smithard, Graham Norton, HRB 21284 (AG N?rnberg)
-- 
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