ACPI / APEI: Pass ghes and estatus separately to avoid a later copy

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The NMI-like notifications scribble over ghes->estatus, before
copying it somewhere else. If this interrupts the ghes_probe() code
calling ghes_proc() on each struct ghes, the data is corrupted.

All the NMI-like notifications should use a queued estatus entry
from the beginning, instead of the ghes version, then copying it.
To do this, break up any use of "ghes->estatus" so that all
functions take the estatus as an argument.

This patch just moves these ghes->estatus dereferences into separate
arguments, no change in behaviour. struct ghes becomes unused in
ghes_clear_estatus() as it only wanted ghes->estatus, which we now
pass directly. This is removed.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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James Morse 2019-01-29 18:48:53 +00:00 • committed by Rafael J. Wysocki

parent b484079b9f

commit f2a7e059aa

1 changed files with 49 additions and 43 deletions

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drivers/acpi/apei/ghes.c

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