ACPI / APEI: Let the notification helper specify the fixmap slot

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ghes_copy_tofrom_phys() uses a different fixmap slot depending on in_nmi().
This doesn't work when there are multiple NMI-like notifications, that
could interrupt each other.

As with the locking, move the chosen fixmap_idx to the notification helper.
This only matters for NMI-like notifications, anything calling
ghes_proc() can use the IRQ fixmap slot as its already holding an irqsave
spinlock.

This lets us collapse the ghes_ioremap_pfn_*() helpers.

Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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James Morse 2019-01-29 18:48:52 +00:00 • committed by Rafael J. Wysocki

parent 3b880cbe4d

commit b484079b9f

1 changed files with 39 additions and 53 deletions

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drivers/acpi/apei/ghes.c

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